-- Hoogle documentation, generated by Haddock
-- See Hoogle, http://www.haskell.org/hoogle/


-- | Terminal emulator configurable in Haskell
--   
--   Termonad is a terminal emulator configurable in Haskell. It is
--   extremely customizable and provides hooks to modify the default
--   behavior. It can be thought of as the "XMonad" of terminal emulators.
--   Termonad was featured on an <a>episode</a> of <a>DistroTube</a>. This
--   video gives a short overview of Termonad.
--   
--   Please see <a>README.md</a> for more information.
@package termonad
@version 4.5.0.0

module Termonad.Pcre
pcre2Multiline :: CUInt
inline_c_ffi_6989586621679086563 :: IO CUInt

module Termonad.Prelude
newtype () => UnliftIO (m :: Type -> Type)
UnliftIO :: (forall a. () => m a -> IO a) -> UnliftIO (m :: Type -> Type)
[unliftIO] :: UnliftIO (m :: Type -> Type) -> forall a. () => m a -> IO a

-- | Exceptions that occur in the <tt>IO</tt> monad. An
--   <tt>IOException</tt> records a more specific error type, a descriptive
--   string and maybe the handle that was used when the error was flagged.
data () => IOException
data () => AsyncCancelled
AsyncCancelled :: AsyncCancelled

-- | An <a>MVar</a> (pronounced "em-var") is a synchronising variable, used
--   for communication between concurrent threads. It can be thought of as
--   a box, which may be empty or full.
data () => MVar a
data () => Async a

-- | The class <a>Typeable</a> allows a concrete representation of a type
--   to be calculated.
class () => Typeable (a :: k)

-- | Representable types of kind <tt>*</tt>. This class is derivable in GHC
--   with the <tt>DeriveGeneric</tt> flag on.
--   
--   A <a>Generic</a> instance must satisfy the following laws:
--   
--   <pre>
--   <a>from</a> . <a>to</a> ≡ <a>id</a>
--   <a>to</a> . <a>from</a> ≡ <a>id</a>
--   </pre>
class () => Generic a

-- | A type <tt>f</tt> is a Functor if it provides a function <tt>fmap</tt>
--   which, given any types <tt>a</tt> and <tt>b</tt> lets you apply any
--   function from <tt>(a -&gt; b)</tt> to turn an <tt>f a</tt> into an
--   <tt>f b</tt>, preserving the structure of <tt>f</tt>. Furthermore
--   <tt>f</tt> needs to adhere to the following:
--   
--   <ul>
--   <li><i>Identity</i> <tt><a>fmap</a> <a>id</a> == <a>id</a></tt></li>
--   <li><i>Composition</i> <tt><a>fmap</a> (f . g) == <a>fmap</a> f .
--   <a>fmap</a> g</tt></li>
--   </ul>
--   
--   Note, that the second law follows from the free theorem of the type
--   <a>fmap</a> and the first law, so you need only check that the former
--   condition holds. See
--   <a>https://www.schoolofhaskell.com/user/edwardk/snippets/fmap</a> or
--   <a>https://github.com/quchen/articles/blob/master/second_functor_law.md</a>
--   for an explanation.
class () => Functor (f :: Type -> Type)

-- | <a>fmap</a> is used to apply a function of type <tt>(a -&gt; b)</tt>
--   to a value of type <tt>f a</tt>, where f is a functor, to produce a
--   value of type <tt>f b</tt>. Note that for any type constructor with
--   more than one parameter (e.g., <tt>Either</tt>), only the last type
--   parameter can be modified with <a>fmap</a> (e.g., <tt>b</tt> in
--   `Either a b`).
--   
--   Some type constructors with two parameters or more have a
--   <tt><a>Bifunctor</a></tt> instance that allows both the last and the
--   penultimate parameters to be mapped over.
--   
--   <h4><b>Examples</b></h4>
--   
--   Convert from a <tt><a>Maybe</a> Int</tt> to a <tt>Maybe String</tt>
--   using <a>show</a>:
--   
--   <pre>
--   &gt;&gt;&gt; fmap show Nothing
--   Nothing
--   
--   &gt;&gt;&gt; fmap show (Just 3)
--   Just "3"
--   </pre>
--   
--   Convert from an <tt><a>Either</a> Int Int</tt> to an <tt>Either Int
--   String</tt> using <a>show</a>:
--   
--   <pre>
--   &gt;&gt;&gt; fmap show (Left 17)
--   Left 17
--   
--   &gt;&gt;&gt; fmap show (Right 17)
--   Right "17"
--   </pre>
--   
--   Double each element of a list:
--   
--   <pre>
--   &gt;&gt;&gt; fmap (*2) [1,2,3]
--   [2,4,6]
--   </pre>
--   
--   Apply <a>even</a> to the second element of a pair:
--   
--   <pre>
--   &gt;&gt;&gt; fmap even (2,2)
--   (2,True)
--   </pre>
--   
--   It may seem surprising that the function is only applied to the last
--   element of the tuple compared to the list example above which applies
--   it to every element in the list. To understand, remember that tuples
--   are type constructors with multiple type parameters: a tuple of 3
--   elements <tt>(a,b,c)</tt> can also be written <tt>(,,) a b c</tt> and
--   its <tt>Functor</tt> instance is defined for <tt>Functor ((,,) a
--   b)</tt> (i.e., only the third parameter is free to be mapped over with
--   <tt>fmap</tt>).
--   
--   It explains why <tt>fmap</tt> can be used with tuples containing
--   values of different types as in the following example:
--   
--   <pre>
--   &gt;&gt;&gt; fmap even ("hello", 1.0, 4)
--   ("hello",1.0,True)
--   </pre>
fmap :: Functor f => (a -> b) -> f a -> f b

-- | Replace all locations in the input with the same value. The default
--   definition is <tt><a>fmap</a> . <a>const</a></tt>, but this may be
--   overridden with a more efficient version.
--   
--   <h4><b>Examples</b></h4>
--   
--   Perform a computation with <a>Maybe</a> and replace the result with a
--   constant value if it is <a>Just</a>:
--   
--   <pre>
--   &gt;&gt;&gt; 'a' &lt;$ Just 2
--   Just 'a'
--   
--   &gt;&gt;&gt; 'a' &lt;$ Nothing
--   Nothing
--   </pre>
(<$) :: Functor f => a -> f b -> f a
infixl 4 <$

-- | Functors representing data structures that can be transformed to
--   structures of the <i>same shape</i> by performing an
--   <a>Applicative</a> (or, therefore, <a>Monad</a>) action on each
--   element from left to right.
--   
--   A more detailed description of what <i>same shape</i> means, the
--   various methods, how traversals are constructed, and example advanced
--   use-cases can be found in the <b>Overview</b> section of
--   <a>Data.Traversable#overview</a>.
--   
--   For the class laws see the <b>Laws</b> section of
--   <a>Data.Traversable#laws</a>.
class (Functor t, Foldable t) => Traversable (t :: Type -> Type)

-- | Map each element of a structure to an action, evaluate these actions
--   from left to right, and collect the results. For a version that
--   ignores the results see <a>traverse_</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   In the first two examples we show each evaluated action mapping to the
--   output structure.
--   
--   <pre>
--   &gt;&gt;&gt; traverse Just [1,2,3,4]
--   Just [1,2,3,4]
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; traverse id [Right 1, Right 2, Right 3, Right 4]
--   Right [1,2,3,4]
--   </pre>
--   
--   In the next examples, we show that <a>Nothing</a> and <a>Left</a>
--   values short circuit the created structure.
--   
--   <pre>
--   &gt;&gt;&gt; traverse (const Nothing) [1,2,3,4]
--   Nothing
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; traverse (\x -&gt; if odd x then Just x else Nothing)  [1,2,3,4]
--   Nothing
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; traverse id [Right 1, Right 2, Right 3, Right 4, Left 0]
--   Left 0
--   </pre>
traverse :: (Traversable t, Applicative f) => (a -> f b) -> t a -> f (t b)

-- | Evaluate each action in the structure from left to right, and collect
--   the results. For a version that ignores the results see
--   <a>sequenceA_</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   For the first two examples we show sequenceA fully evaluating a a
--   structure and collecting the results.
--   
--   <pre>
--   &gt;&gt;&gt; sequenceA [Just 1, Just 2, Just 3]
--   Just [1,2,3]
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; sequenceA [Right 1, Right 2, Right 3]
--   Right [1,2,3]
--   </pre>
--   
--   The next two example show <a>Nothing</a> and <a>Just</a> will short
--   circuit the resulting structure if present in the input. For more
--   context, check the <a>Traversable</a> instances for <a>Either</a> and
--   <a>Maybe</a>.
--   
--   <pre>
--   &gt;&gt;&gt; sequenceA [Just 1, Just 2, Just 3, Nothing]
--   Nothing
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; sequenceA [Right 1, Right 2, Right 3, Left 4]
--   Left 4
--   </pre>
sequenceA :: (Traversable t, Applicative f) => t (f a) -> f (t a)

-- | Map each element of a structure to a monadic action, evaluate these
--   actions from left to right, and collect the results. For a version
--   that ignores the results see <a>mapM_</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   <a>mapM</a> is literally a <a>traverse</a> with a type signature
--   restricted to <a>Monad</a>. Its implementation may be more efficient
--   due to additional power of <a>Monad</a>.
mapM :: (Traversable t, Monad m) => (a -> m b) -> t a -> m (t b)

-- | Evaluate each monadic action in the structure from left to right, and
--   collect the results. For a version that ignores the results see
--   <a>sequence_</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   The first two examples are instances where the input and and output of
--   <a>sequence</a> are isomorphic.
--   
--   <pre>
--   &gt;&gt;&gt; sequence $ Right [1,2,3,4]
--   [Right 1,Right 2,Right 3,Right 4]
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; sequence $ [Right 1,Right 2,Right 3,Right 4]
--   Right [1,2,3,4]
--   </pre>
--   
--   The following examples demonstrate short circuit behavior for
--   <a>sequence</a>.
--   
--   <pre>
--   &gt;&gt;&gt; sequence $ Left [1,2,3,4]
--   Left [1,2,3,4]
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; sequence $ [Left 0, Right 1,Right 2,Right 3,Right 4]
--   Left 0
--   </pre>
sequence :: (Traversable t, Monad m) => t (m a) -> m (t a)

-- | The Foldable class represents data structures that can be reduced to a
--   summary value one element at a time. Strict left-associative folds are
--   a good fit for space-efficient reduction, while lazy right-associative
--   folds are a good fit for corecursive iteration, or for folds that
--   short-circuit after processing an initial subsequence of the
--   structure's elements.
--   
--   Instances can be derived automatically by enabling the
--   <tt>DeriveFoldable</tt> extension. For example, a derived instance for
--   a binary tree might be:
--   
--   <pre>
--   {-# LANGUAGE DeriveFoldable #-}
--   data Tree a = Empty
--               | Leaf a
--               | Node (Tree a) a (Tree a)
--       deriving Foldable
--   </pre>
--   
--   A more detailed description can be found in the <b>Overview</b>
--   section of <a>Data.Foldable#overview</a>.
--   
--   For the class laws see the <b>Laws</b> section of
--   <a>Data.Foldable#laws</a>.
class () => Foldable (t :: Type -> Type)

-- | The <a>Bounded</a> class is used to name the upper and lower limits of
--   a type. <a>Ord</a> is not a superclass of <a>Bounded</a> since types
--   that are not totally ordered may also have upper and lower bounds.
--   
--   The <a>Bounded</a> class may be derived for any enumeration type;
--   <a>minBound</a> is the first constructor listed in the <tt>data</tt>
--   declaration and <a>maxBound</a> is the last. <a>Bounded</a> may also
--   be derived for single-constructor datatypes whose constituent types
--   are in <a>Bounded</a>.
class () => Bounded a
minBound :: Bounded a => a
maxBound :: Bounded a => a

-- | Class <a>Enum</a> defines operations on sequentially ordered types.
--   
--   The <tt>enumFrom</tt>... methods are used in Haskell's translation of
--   arithmetic sequences.
--   
--   Instances of <a>Enum</a> may be derived for any enumeration type
--   (types whose constructors have no fields). The nullary constructors
--   are assumed to be numbered left-to-right by <a>fromEnum</a> from
--   <tt>0</tt> through <tt>n-1</tt>. See Chapter 10 of the <i>Haskell
--   Report</i> for more details.
--   
--   For any type that is an instance of class <a>Bounded</a> as well as
--   <a>Enum</a>, the following should hold:
--   
--   <ul>
--   <li>The calls <tt><a>succ</a> <a>maxBound</a></tt> and <tt><a>pred</a>
--   <a>minBound</a></tt> should result in a runtime error.</li>
--   <li><a>fromEnum</a> and <a>toEnum</a> should give a runtime error if
--   the result value is not representable in the result type. For example,
--   <tt><a>toEnum</a> 7 :: <a>Bool</a></tt> is an error.</li>
--   <li><a>enumFrom</a> and <a>enumFromThen</a> should be defined with an
--   implicit bound, thus:</li>
--   </ul>
--   
--   <pre>
--   enumFrom     x   = enumFromTo     x maxBound
--   enumFromThen x y = enumFromThenTo x y bound
--     where
--       bound | fromEnum y &gt;= fromEnum x = maxBound
--             | otherwise                = minBound
--   </pre>
class () => Enum a

-- | the successor of a value. For numeric types, <a>succ</a> adds 1.
succ :: Enum a => a -> a

-- | the predecessor of a value. For numeric types, <a>pred</a> subtracts
--   1.
pred :: Enum a => a -> a

-- | Convert from an <a>Int</a>.
toEnum :: Enum a => Int -> a

-- | Convert to an <a>Int</a>. It is implementation-dependent what
--   <a>fromEnum</a> returns when applied to a value that is too large to
--   fit in an <a>Int</a>.
fromEnum :: Enum a => a -> Int

-- | Used in Haskell's translation of <tt>[n..]</tt> with <tt>[n..] =
--   enumFrom n</tt>, a possible implementation being <tt>enumFrom n = n :
--   enumFrom (succ n)</tt>. For example:
--   
--   <ul>
--   <li><pre>enumFrom 4 :: [Integer] = [4,5,6,7,...]</pre></li>
--   <li><pre>enumFrom 6 :: [Int] = [6,7,8,9,...,maxBound ::
--   Int]</pre></li>
--   </ul>
enumFrom :: Enum a => a -> [a]

-- | Used in Haskell's translation of <tt>[n,n'..]</tt> with <tt>[n,n'..] =
--   enumFromThen n n'</tt>, a possible implementation being
--   <tt>enumFromThen n n' = n : n' : worker (f x) (f x n')</tt>,
--   <tt>worker s v = v : worker s (s v)</tt>, <tt>x = fromEnum n' -
--   fromEnum n</tt> and <tt>f n y | n &gt; 0 = f (n - 1) (succ y) | n &lt;
--   0 = f (n + 1) (pred y) | otherwise = y</tt> For example:
--   
--   <ul>
--   <li><pre>enumFromThen 4 6 :: [Integer] = [4,6,8,10...]</pre></li>
--   <li><pre>enumFromThen 6 2 :: [Int] = [6,2,-2,-6,...,minBound ::
--   Int]</pre></li>
--   </ul>
enumFromThen :: Enum a => a -> a -> [a]

-- | Used in Haskell's translation of <tt>[n..m]</tt> with <tt>[n..m] =
--   enumFromTo n m</tt>, a possible implementation being <tt>enumFromTo n
--   m | n &lt;= m = n : enumFromTo (succ n) m | otherwise = []</tt>. For
--   example:
--   
--   <ul>
--   <li><pre>enumFromTo 6 10 :: [Int] = [6,7,8,9,10]</pre></li>
--   <li><pre>enumFromTo 42 1 :: [Integer] = []</pre></li>
--   </ul>
enumFromTo :: Enum a => a -> a -> [a]

-- | Used in Haskell's translation of <tt>[n,n'..m]</tt> with <tt>[n,n'..m]
--   = enumFromThenTo n n' m</tt>, a possible implementation being
--   <tt>enumFromThenTo n n' m = worker (f x) (c x) n m</tt>, <tt>x =
--   fromEnum n' - fromEnum n</tt>, <tt>c x = bool (&gt;=) (<a>(x</a>
--   0)</tt> <tt>f n y | n &gt; 0 = f (n - 1) (succ y) | n &lt; 0 = f (n +
--   1) (pred y) | otherwise = y</tt> and <tt>worker s c v m | c v m = v :
--   worker s c (s v) m | otherwise = []</tt> For example:
--   
--   <ul>
--   <li><pre>enumFromThenTo 4 2 -6 :: [Integer] =
--   [4,2,0,-2,-4,-6]</pre></li>
--   <li><pre>enumFromThenTo 6 8 2 :: [Int] = []</pre></li>
--   </ul>
enumFromThenTo :: Enum a => a -> a -> a -> [a]

-- | The <a>Eq</a> class defines equality (<a>==</a>) and inequality
--   (<a>/=</a>). All the basic datatypes exported by the <a>Prelude</a>
--   are instances of <a>Eq</a>, and <a>Eq</a> may be derived for any
--   datatype whose constituents are also instances of <a>Eq</a>.
--   
--   The Haskell Report defines no laws for <a>Eq</a>. However, instances
--   are encouraged to follow these properties:
--   
--   <ul>
--   <li><i><b>Reflexivity</b></i> <tt>x == x</tt> = <a>True</a></li>
--   <li><i><b>Symmetry</b></i> <tt>x == y</tt> = <tt>y == x</tt></li>
--   <li><i><b>Transitivity</b></i> if <tt>x == y &amp;&amp; y == z</tt> =
--   <a>True</a>, then <tt>x == z</tt> = <a>True</a></li>
--   <li><i><b>Extensionality</b></i> if <tt>x == y</tt> = <a>True</a> and
--   <tt>f</tt> is a function whose return type is an instance of
--   <a>Eq</a>, then <tt>f x == f y</tt> = <a>True</a></li>
--   <li><i><b>Negation</b></i> <tt>x /= y</tt> = <tt>not (x ==
--   y)</tt></li>
--   </ul>
--   
--   Minimal complete definition: either <a>==</a> or <a>/=</a>.
class () => Eq a
(==) :: Eq a => a -> a -> Bool
(/=) :: Eq a => a -> a -> Bool
infix 4 ==
infix 4 /=

-- | Trigonometric and hyperbolic functions and related functions.
--   
--   The Haskell Report defines no laws for <a>Floating</a>. However,
--   <tt>(<a>+</a>)</tt>, <tt>(<a>*</a>)</tt> and <a>exp</a> are
--   customarily expected to define an exponential field and have the
--   following properties:
--   
--   <ul>
--   <li><tt>exp (a + b)</tt> = <tt>exp a * exp b</tt></li>
--   <li><tt>exp (fromInteger 0)</tt> = <tt>fromInteger 1</tt></li>
--   </ul>
class Fractional a => Floating a
pi :: Floating a => a
exp :: Floating a => a -> a
log :: Floating a => a -> a
sqrt :: Floating a => a -> a
(**) :: Floating a => a -> a -> a
logBase :: Floating a => a -> a -> a
sin :: Floating a => a -> a
cos :: Floating a => a -> a
tan :: Floating a => a -> a
asin :: Floating a => a -> a
acos :: Floating a => a -> a
atan :: Floating a => a -> a
sinh :: Floating a => a -> a
cosh :: Floating a => a -> a
tanh :: Floating a => a -> a
asinh :: Floating a => a -> a
acosh :: Floating a => a -> a
atanh :: Floating a => a -> a
infixr 8 **

-- | Fractional numbers, supporting real division.
--   
--   The Haskell Report defines no laws for <a>Fractional</a>. However,
--   <tt>(<a>+</a>)</tt> and <tt>(<a>*</a>)</tt> are customarily expected
--   to define a division ring and have the following properties:
--   
--   <ul>
--   <li><i><b><a>recip</a> gives the multiplicative inverse</b></i> <tt>x
--   * recip x</tt> = <tt>recip x * x</tt> = <tt>fromInteger 1</tt></li>
--   <li><i><b>Totality of <a>toRational</a></b></i> <a>toRational</a> is
--   total</li>
--   <li><i><b>Coherence with <a>toRational</a></b></i> if the type also
--   implements <a>Real</a>, then <a>fromRational</a> is a left inverse for
--   <a>toRational</a>, i.e. <tt>fromRational (toRational i) = i</tt></li>
--   </ul>
--   
--   Note that it <i>isn't</i> customarily expected that a type instance of
--   <a>Fractional</a> implement a field. However, all instances in
--   <tt>base</tt> do.
class Num a => Fractional a

-- | Fractional division.
(/) :: Fractional a => a -> a -> a

-- | Reciprocal fraction.
recip :: Fractional a => a -> a

-- | Conversion from a <a>Rational</a> (that is <tt><a>Ratio</a>
--   <a>Integer</a></tt>). A floating literal stands for an application of
--   <a>fromRational</a> to a value of type <a>Rational</a>, so such
--   literals have type <tt>(<a>Fractional</a> a) =&gt; a</tt>.
fromRational :: Fractional a => Rational -> a
infixl 7 /

-- | Integral numbers, supporting integer division.
--   
--   The Haskell Report defines no laws for <a>Integral</a>. However,
--   <a>Integral</a> instances are customarily expected to define a
--   Euclidean domain and have the following properties for the
--   <a>div</a>/<a>mod</a> and <a>quot</a>/<a>rem</a> pairs, given suitable
--   Euclidean functions <tt>f</tt> and <tt>g</tt>:
--   
--   <ul>
--   <li><tt>x</tt> = <tt>y * quot x y + rem x y</tt> with <tt>rem x y</tt>
--   = <tt>fromInteger 0</tt> or <tt>g (rem x y)</tt> &lt; <tt>g
--   y</tt></li>
--   <li><tt>x</tt> = <tt>y * div x y + mod x y</tt> with <tt>mod x y</tt>
--   = <tt>fromInteger 0</tt> or <tt>f (mod x y)</tt> &lt; <tt>f
--   y</tt></li>
--   </ul>
--   
--   An example of a suitable Euclidean function, for <a>Integer</a>'s
--   instance, is <a>abs</a>.
--   
--   In addition, <a>toInteger</a> should be total, and <a>fromInteger</a>
--   should be a left inverse for it, i.e. <tt>fromInteger (toInteger i) =
--   i</tt>.
class (Real a, Enum a) => Integral a

-- | integer division truncated toward zero
--   
--   WARNING: This function is partial (because it throws when 0 is passed
--   as the divisor) for all the integer types in <tt>base</tt>.
quot :: Integral a => a -> a -> a

-- | integer remainder, satisfying
--   
--   <pre>
--   (x `quot` y)*y + (x `rem` y) == x
--   </pre>
--   
--   WARNING: This function is partial (because it throws when 0 is passed
--   as the divisor) for all the integer types in <tt>base</tt>.
rem :: Integral a => a -> a -> a

-- | integer division truncated toward negative infinity
--   
--   WARNING: This function is partial (because it throws when 0 is passed
--   as the divisor) for all the integer types in <tt>base</tt>.
div :: Integral a => a -> a -> a

-- | integer modulus, satisfying
--   
--   <pre>
--   (x `div` y)*y + (x `mod` y) == x
--   </pre>
--   
--   WARNING: This function is partial (because it throws when 0 is passed
--   as the divisor) for all the integer types in <tt>base</tt>.
mod :: Integral a => a -> a -> a

-- | simultaneous <a>quot</a> and <a>rem</a>
--   
--   WARNING: This function is partial (because it throws when 0 is passed
--   as the divisor) for all the integer types in <tt>base</tt>.
quotRem :: Integral a => a -> a -> (a, a)

-- | simultaneous <a>div</a> and <a>mod</a>
--   
--   WARNING: This function is partial (because it throws when 0 is passed
--   as the divisor) for all the integer types in <tt>base</tt>.
divMod :: Integral a => a -> a -> (a, a)

-- | conversion to <a>Integer</a>
toInteger :: Integral a => a -> Integer
infixl 7 `quot`
infixl 7 `rem`
infixl 7 `div`
infixl 7 `mod`

-- | The <a>Monad</a> class defines the basic operations over a
--   <i>monad</i>, a concept from a branch of mathematics known as
--   <i>category theory</i>. From the perspective of a Haskell programmer,
--   however, it is best to think of a monad as an <i>abstract datatype</i>
--   of actions. Haskell's <tt>do</tt> expressions provide a convenient
--   syntax for writing monadic expressions.
--   
--   Instances of <a>Monad</a> should satisfy the following:
--   
--   <ul>
--   <li><i>Left identity</i> <tt><a>return</a> a <a>&gt;&gt;=</a> k = k
--   a</tt></li>
--   <li><i>Right identity</i> <tt>m <a>&gt;&gt;=</a> <a>return</a> =
--   m</tt></li>
--   <li><i>Associativity</i> <tt>m <a>&gt;&gt;=</a> (\x -&gt; k x
--   <a>&gt;&gt;=</a> h) = (m <a>&gt;&gt;=</a> k) <a>&gt;&gt;=</a>
--   h</tt></li>
--   </ul>
--   
--   Furthermore, the <a>Monad</a> and <a>Applicative</a> operations should
--   relate as follows:
--   
--   <ul>
--   <li><pre><a>pure</a> = <a>return</a></pre></li>
--   <li><pre>m1 <a>&lt;*&gt;</a> m2 = m1 <a>&gt;&gt;=</a> (\x1 -&gt; m2
--   <a>&gt;&gt;=</a> (\x2 -&gt; <a>return</a> (x1 x2)))</pre></li>
--   </ul>
--   
--   The above laws imply:
--   
--   <ul>
--   <li><pre><a>fmap</a> f xs = xs <a>&gt;&gt;=</a> <a>return</a> .
--   f</pre></li>
--   <li><pre>(<a>&gt;&gt;</a>) = (<a>*&gt;</a>)</pre></li>
--   </ul>
--   
--   and that <a>pure</a> and (<a>&lt;*&gt;</a>) satisfy the applicative
--   functor laws.
--   
--   The instances of <a>Monad</a> for lists, <a>Maybe</a> and <a>IO</a>
--   defined in the <a>Prelude</a> satisfy these laws.
class Applicative m => Monad (m :: Type -> Type)

-- | Sequentially compose two actions, passing any value produced by the
--   first as an argument to the second.
--   
--   '<tt>as <a>&gt;&gt;=</a> bs</tt>' can be understood as the <tt>do</tt>
--   expression
--   
--   <pre>
--   do a &lt;- as
--      bs a
--   </pre>
(>>=) :: Monad m => m a -> (a -> m b) -> m b

-- | Sequentially compose two actions, discarding any value produced by the
--   first, like sequencing operators (such as the semicolon) in imperative
--   languages.
--   
--   '<tt>as <a>&gt;&gt;</a> bs</tt>' can be understood as the <tt>do</tt>
--   expression
--   
--   <pre>
--   do as
--      bs
--   </pre>
(>>) :: Monad m => m a -> m b -> m b

-- | Inject a value into the monadic type.
return :: Monad m => a -> m a
infixl 1 >>=
infixl 1 >>

-- | Basic numeric class.
--   
--   The Haskell Report defines no laws for <a>Num</a>. However,
--   <tt>(<a>+</a>)</tt> and <tt>(<a>*</a>)</tt> are customarily expected
--   to define a ring and have the following properties:
--   
--   <ul>
--   <li><i><b>Associativity of <tt>(<a>+</a>)</tt></b></i> <tt>(x + y) +
--   z</tt> = <tt>x + (y + z)</tt></li>
--   <li><i><b>Commutativity of <tt>(<a>+</a>)</tt></b></i> <tt>x + y</tt>
--   = <tt>y + x</tt></li>
--   <li><i><b><tt><a>fromInteger</a> 0</tt> is the additive
--   identity</b></i> <tt>x + fromInteger 0</tt> = <tt>x</tt></li>
--   <li><i><b><a>negate</a> gives the additive inverse</b></i> <tt>x +
--   negate x</tt> = <tt>fromInteger 0</tt></li>
--   <li><i><b>Associativity of <tt>(<a>*</a>)</tt></b></i> <tt>(x * y) *
--   z</tt> = <tt>x * (y * z)</tt></li>
--   <li><i><b><tt><a>fromInteger</a> 1</tt> is the multiplicative
--   identity</b></i> <tt>x * fromInteger 1</tt> = <tt>x</tt> and
--   <tt>fromInteger 1 * x</tt> = <tt>x</tt></li>
--   <li><i><b>Distributivity of <tt>(<a>*</a>)</tt> with respect to
--   <tt>(<a>+</a>)</tt></b></i> <tt>a * (b + c)</tt> = <tt>(a * b) + (a *
--   c)</tt> and <tt>(b + c) * a</tt> = <tt>(b * a) + (c * a)</tt></li>
--   <li><i><b>Coherence with <tt>toInteger</tt></b></i> if the type also
--   implements <a>Integral</a>, then <a>fromInteger</a> is a left inverse
--   for <a>toInteger</a>, i.e. <tt>fromInteger (toInteger i) ==
--   i</tt></li>
--   </ul>
--   
--   Note that it <i>isn't</i> customarily expected that a type instance of
--   both <a>Num</a> and <a>Ord</a> implement an ordered ring. Indeed, in
--   <tt>base</tt> only <a>Integer</a> and <a>Rational</a> do.
class () => Num a
(+) :: Num a => a -> a -> a
(-) :: Num a => a -> a -> a
(*) :: Num a => a -> a -> a

-- | Unary negation.
negate :: Num a => a -> a

-- | Absolute value.
abs :: Num a => a -> a

-- | Sign of a number. The functions <a>abs</a> and <a>signum</a> should
--   satisfy the law:
--   
--   <pre>
--   abs x * signum x == x
--   </pre>
--   
--   For real numbers, the <a>signum</a> is either <tt>-1</tt> (negative),
--   <tt>0</tt> (zero) or <tt>1</tt> (positive).
signum :: Num a => a -> a

-- | Conversion from an <a>Integer</a>. An integer literal represents the
--   application of the function <a>fromInteger</a> to the appropriate
--   value of type <a>Integer</a>, so such literals have type
--   <tt>(<a>Num</a> a) =&gt; a</tt>.
fromInteger :: Num a => Integer -> a
infixl 6 -
infixl 6 +
infixl 7 *

-- | The <a>Ord</a> class is used for totally ordered datatypes.
--   
--   Instances of <a>Ord</a> can be derived for any user-defined datatype
--   whose constituent types are in <a>Ord</a>. The declared order of the
--   constructors in the data declaration determines the ordering in
--   derived <a>Ord</a> instances. The <a>Ordering</a> datatype allows a
--   single comparison to determine the precise ordering of two objects.
--   
--   <a>Ord</a>, as defined by the Haskell report, implements a total order
--   and has the following properties:
--   
--   <ul>
--   <li><i><b>Comparability</b></i> <tt>x &lt;= y || y &lt;= x</tt> =
--   <a>True</a></li>
--   <li><i><b>Transitivity</b></i> if <tt>x &lt;= y &amp;&amp; y &lt;=
--   z</tt> = <a>True</a>, then <tt>x &lt;= z</tt> = <a>True</a></li>
--   <li><i><b>Reflexivity</b></i> <tt>x &lt;= x</tt> = <a>True</a></li>
--   <li><i><b>Antisymmetry</b></i> if <tt>x &lt;= y &amp;&amp; y &lt;=
--   x</tt> = <a>True</a>, then <tt>x == y</tt> = <a>True</a></li>
--   </ul>
--   
--   The following operator interactions are expected to hold:
--   
--   <ol>
--   <li><tt>x &gt;= y</tt> = <tt>y &lt;= x</tt></li>
--   <li><tt>x &lt; y</tt> = <tt>x &lt;= y &amp;&amp; x /= y</tt></li>
--   <li><tt>x &gt; y</tt> = <tt>y &lt; x</tt></li>
--   <li><tt>x &lt; y</tt> = <tt>compare x y == LT</tt></li>
--   <li><tt>x &gt; y</tt> = <tt>compare x y == GT</tt></li>
--   <li><tt>x == y</tt> = <tt>compare x y == EQ</tt></li>
--   <li><tt>min x y == if x &lt;= y then x else y</tt> = <a>True</a></li>
--   <li><tt>max x y == if x &gt;= y then x else y</tt> = <a>True</a></li>
--   </ol>
--   
--   Note that (7.) and (8.) do <i>not</i> require <a>min</a> and
--   <a>max</a> to return either of their arguments. The result is merely
--   required to <i>equal</i> one of the arguments in terms of <a>(==)</a>.
--   
--   Minimal complete definition: either <a>compare</a> or <a>&lt;=</a>.
--   Using <a>compare</a> can be more efficient for complex types.
class Eq a => Ord a
compare :: Ord a => a -> a -> Ordering
(<) :: Ord a => a -> a -> Bool
(<=) :: Ord a => a -> a -> Bool
(>) :: Ord a => a -> a -> Bool
(>=) :: Ord a => a -> a -> Bool
max :: Ord a => a -> a -> a
min :: Ord a => a -> a -> a
infix 4 >=
infix 4 <
infix 4 <=
infix 4 >

-- | Parsing of <a>String</a>s, producing values.
--   
--   Derived instances of <a>Read</a> make the following assumptions, which
--   derived instances of <a>Show</a> obey:
--   
--   <ul>
--   <li>If the constructor is defined to be an infix operator, then the
--   derived <a>Read</a> instance will parse only infix applications of the
--   constructor (not the prefix form).</li>
--   <li>Associativity is not used to reduce the occurrence of parentheses,
--   although precedence may be.</li>
--   <li>If the constructor is defined using record syntax, the derived
--   <a>Read</a> will parse only the record-syntax form, and furthermore,
--   the fields must be given in the same order as the original
--   declaration.</li>
--   <li>The derived <a>Read</a> instance allows arbitrary Haskell
--   whitespace between tokens of the input string. Extra parentheses are
--   also allowed.</li>
--   </ul>
--   
--   For example, given the declarations
--   
--   <pre>
--   infixr 5 :^:
--   data Tree a =  Leaf a  |  Tree a :^: Tree a
--   </pre>
--   
--   the derived instance of <a>Read</a> in Haskell 2010 is equivalent to
--   
--   <pre>
--   instance (Read a) =&gt; Read (Tree a) where
--   
--           readsPrec d r =  readParen (d &gt; app_prec)
--                            (\r -&gt; [(Leaf m,t) |
--                                    ("Leaf",s) &lt;- lex r,
--                                    (m,t) &lt;- readsPrec (app_prec+1) s]) r
--   
--                         ++ readParen (d &gt; up_prec)
--                            (\r -&gt; [(u:^:v,w) |
--                                    (u,s) &lt;- readsPrec (up_prec+1) r,
--                                    (":^:",t) &lt;- lex s,
--                                    (v,w) &lt;- readsPrec (up_prec+1) t]) r
--   
--             where app_prec = 10
--                   up_prec = 5
--   </pre>
--   
--   Note that right-associativity of <tt>:^:</tt> is unused.
--   
--   The derived instance in GHC is equivalent to
--   
--   <pre>
--   instance (Read a) =&gt; Read (Tree a) where
--   
--           readPrec = parens $ (prec app_prec $ do
--                                    Ident "Leaf" &lt;- lexP
--                                    m &lt;- step readPrec
--                                    return (Leaf m))
--   
--                        +++ (prec up_prec $ do
--                                    u &lt;- step readPrec
--                                    Symbol ":^:" &lt;- lexP
--                                    v &lt;- step readPrec
--                                    return (u :^: v))
--   
--             where app_prec = 10
--                   up_prec = 5
--   
--           readListPrec = readListPrecDefault
--   </pre>
--   
--   Why do both <a>readsPrec</a> and <a>readPrec</a> exist, and why does
--   GHC opt to implement <a>readPrec</a> in derived <a>Read</a> instances
--   instead of <a>readsPrec</a>? The reason is that <a>readsPrec</a> is
--   based on the <a>ReadS</a> type, and although <a>ReadS</a> is mentioned
--   in the Haskell 2010 Report, it is not a very efficient parser data
--   structure.
--   
--   <a>readPrec</a>, on the other hand, is based on a much more efficient
--   <a>ReadPrec</a> datatype (a.k.a "new-style parsers"), but its
--   definition relies on the use of the <tt>RankNTypes</tt> language
--   extension. Therefore, <a>readPrec</a> (and its cousin,
--   <a>readListPrec</a>) are marked as GHC-only. Nevertheless, it is
--   recommended to use <a>readPrec</a> instead of <a>readsPrec</a>
--   whenever possible for the efficiency improvements it brings.
--   
--   As mentioned above, derived <a>Read</a> instances in GHC will
--   implement <a>readPrec</a> instead of <a>readsPrec</a>. The default
--   implementations of <a>readsPrec</a> (and its cousin, <a>readList</a>)
--   will simply use <a>readPrec</a> under the hood. If you are writing a
--   <a>Read</a> instance by hand, it is recommended to write it like so:
--   
--   <pre>
--   instance <a>Read</a> T where
--     <a>readPrec</a>     = ...
--     <a>readListPrec</a> = <a>readListPrecDefault</a>
--   </pre>
class () => Read a

-- | Real numbers.
--   
--   The Haskell report defines no laws for <a>Real</a>, however
--   <a>Real</a> instances are customarily expected to adhere to the
--   following law:
--   
--   <ul>
--   <li><i><b>Coherence with <a>fromRational</a></b></i> if the type also
--   implements <a>Fractional</a>, then <a>fromRational</a> is a left
--   inverse for <a>toRational</a>, i.e. <tt>fromRational (toRational i) =
--   i</tt></li>
--   </ul>
class (Num a, Ord a) => Real a

-- | the rational equivalent of its real argument with full precision
toRational :: Real a => a -> Rational

-- | Efficient, machine-independent access to the components of a
--   floating-point number.
class (RealFrac a, Floating a) => RealFloat a

-- | a constant function, returning the radix of the representation (often
--   <tt>2</tt>)
floatRadix :: RealFloat a => a -> Integer

-- | a constant function, returning the number of digits of
--   <a>floatRadix</a> in the significand
floatDigits :: RealFloat a => a -> Int

-- | a constant function, returning the lowest and highest values the
--   exponent may assume
floatRange :: RealFloat a => a -> (Int, Int)

-- | The function <a>decodeFloat</a> applied to a real floating-point
--   number returns the significand expressed as an <a>Integer</a> and an
--   appropriately scaled exponent (an <a>Int</a>). If
--   <tt><a>decodeFloat</a> x</tt> yields <tt>(m,n)</tt>, then <tt>x</tt>
--   is equal in value to <tt>m*b^^n</tt>, where <tt>b</tt> is the
--   floating-point radix, and furthermore, either <tt>m</tt> and
--   <tt>n</tt> are both zero or else <tt>b^(d-1) &lt;= <a>abs</a> m &lt;
--   b^d</tt>, where <tt>d</tt> is the value of <tt><a>floatDigits</a>
--   x</tt>. In particular, <tt><a>decodeFloat</a> 0 = (0,0)</tt>. If the
--   type contains a negative zero, also <tt><a>decodeFloat</a> (-0.0) =
--   (0,0)</tt>. <i>The result of</i> <tt><a>decodeFloat</a> x</tt> <i>is
--   unspecified if either of</i> <tt><a>isNaN</a> x</tt> <i>or</i>
--   <tt><a>isInfinite</a> x</tt> <i>is</i> <a>True</a>.
decodeFloat :: RealFloat a => a -> (Integer, Int)

-- | <a>encodeFloat</a> performs the inverse of <a>decodeFloat</a> in the
--   sense that for finite <tt>x</tt> with the exception of <tt>-0.0</tt>,
--   <tt><a>uncurry</a> <a>encodeFloat</a> (<a>decodeFloat</a> x) = x</tt>.
--   <tt><a>encodeFloat</a> m n</tt> is one of the two closest
--   representable floating-point numbers to <tt>m*b^^n</tt> (or
--   <tt>±Infinity</tt> if overflow occurs); usually the closer, but if
--   <tt>m</tt> contains too many bits, the result may be rounded in the
--   wrong direction.
encodeFloat :: RealFloat a => Integer -> Int -> a

-- | <a>exponent</a> corresponds to the second component of
--   <a>decodeFloat</a>. <tt><a>exponent</a> 0 = 0</tt> and for finite
--   nonzero <tt>x</tt>, <tt><a>exponent</a> x = snd (<a>decodeFloat</a> x)
--   + <a>floatDigits</a> x</tt>. If <tt>x</tt> is a finite floating-point
--   number, it is equal in value to <tt><a>significand</a> x * b ^^
--   <a>exponent</a> x</tt>, where <tt>b</tt> is the floating-point radix.
--   The behaviour is unspecified on infinite or <tt>NaN</tt> values.
exponent :: RealFloat a => a -> Int

-- | The first component of <a>decodeFloat</a>, scaled to lie in the open
--   interval (<tt>-1</tt>,<tt>1</tt>), either <tt>0.0</tt> or of absolute
--   value <tt>&gt;= 1/b</tt>, where <tt>b</tt> is the floating-point
--   radix. The behaviour is unspecified on infinite or <tt>NaN</tt>
--   values.
significand :: RealFloat a => a -> a

-- | multiplies a floating-point number by an integer power of the radix
scaleFloat :: RealFloat a => Int -> a -> a

-- | <a>True</a> if the argument is an IEEE "not-a-number" (NaN) value
isNaN :: RealFloat a => a -> Bool

-- | <a>True</a> if the argument is an IEEE infinity or negative infinity
isInfinite :: RealFloat a => a -> Bool

-- | <a>True</a> if the argument is too small to be represented in
--   normalized format
isDenormalized :: RealFloat a => a -> Bool

-- | <a>True</a> if the argument is an IEEE negative zero
isNegativeZero :: RealFloat a => a -> Bool

-- | <a>True</a> if the argument is an IEEE floating point number
isIEEE :: RealFloat a => a -> Bool

-- | a version of arctangent taking two real floating-point arguments. For
--   real floating <tt>x</tt> and <tt>y</tt>, <tt><a>atan2</a> y x</tt>
--   computes the angle (from the positive x-axis) of the vector from the
--   origin to the point <tt>(x,y)</tt>. <tt><a>atan2</a> y x</tt> returns
--   a value in the range [<tt>-pi</tt>, <tt>pi</tt>]. It follows the
--   Common Lisp semantics for the origin when signed zeroes are supported.
--   <tt><a>atan2</a> y 1</tt>, with <tt>y</tt> in a type that is
--   <a>RealFloat</a>, should return the same value as <tt><a>atan</a>
--   y</tt>. A default definition of <a>atan2</a> is provided, but
--   implementors can provide a more accurate implementation.
atan2 :: RealFloat a => a -> a -> a

-- | Extracting components of fractions.
class (Real a, Fractional a) => RealFrac a

-- | The function <a>properFraction</a> takes a real fractional number
--   <tt>x</tt> and returns a pair <tt>(n,f)</tt> such that <tt>x =
--   n+f</tt>, and:
--   
--   <ul>
--   <li><tt>n</tt> is an integral number with the same sign as <tt>x</tt>;
--   and</li>
--   <li><tt>f</tt> is a fraction with the same type and sign as
--   <tt>x</tt>, and with absolute value less than <tt>1</tt>.</li>
--   </ul>
--   
--   The default definitions of the <a>ceiling</a>, <a>floor</a>,
--   <a>truncate</a> and <a>round</a> functions are in terms of
--   <a>properFraction</a>.
properFraction :: (RealFrac a, Integral b) => a -> (b, a)

-- | <tt><a>truncate</a> x</tt> returns the integer nearest <tt>x</tt>
--   between zero and <tt>x</tt>
truncate :: (RealFrac a, Integral b) => a -> b

-- | <tt><a>round</a> x</tt> returns the nearest integer to <tt>x</tt>; the
--   even integer if <tt>x</tt> is equidistant between two integers
round :: (RealFrac a, Integral b) => a -> b

-- | <tt><a>ceiling</a> x</tt> returns the least integer not less than
--   <tt>x</tt>
ceiling :: (RealFrac a, Integral b) => a -> b

-- | <tt><a>floor</a> x</tt> returns the greatest integer not greater than
--   <tt>x</tt>
floor :: (RealFrac a, Integral b) => a -> b

-- | Conversion of values to readable <a>String</a>s.
--   
--   Derived instances of <a>Show</a> have the following properties, which
--   are compatible with derived instances of <a>Read</a>:
--   
--   <ul>
--   <li>The result of <a>show</a> is a syntactically correct Haskell
--   expression containing only constants, given the fixity declarations in
--   force at the point where the type is declared. It contains only the
--   constructor names defined in the data type, parentheses, and spaces.
--   When labelled constructor fields are used, braces, commas, field
--   names, and equal signs are also used.</li>
--   <li>If the constructor is defined to be an infix operator, then
--   <a>showsPrec</a> will produce infix applications of the
--   constructor.</li>
--   <li>the representation will be enclosed in parentheses if the
--   precedence of the top-level constructor in <tt>x</tt> is less than
--   <tt>d</tt> (associativity is ignored). Thus, if <tt>d</tt> is
--   <tt>0</tt> then the result is never surrounded in parentheses; if
--   <tt>d</tt> is <tt>11</tt> it is always surrounded in parentheses,
--   unless it is an atomic expression.</li>
--   <li>If the constructor is defined using record syntax, then
--   <a>show</a> will produce the record-syntax form, with the fields given
--   in the same order as the original declaration.</li>
--   </ul>
--   
--   For example, given the declarations
--   
--   <pre>
--   infixr 5 :^:
--   data Tree a =  Leaf a  |  Tree a :^: Tree a
--   </pre>
--   
--   the derived instance of <a>Show</a> is equivalent to
--   
--   <pre>
--   instance (Show a) =&gt; Show (Tree a) where
--   
--          showsPrec d (Leaf m) = showParen (d &gt; app_prec) $
--               showString "Leaf " . showsPrec (app_prec+1) m
--            where app_prec = 10
--   
--          showsPrec d (u :^: v) = showParen (d &gt; up_prec) $
--               showsPrec (up_prec+1) u .
--               showString " :^: "      .
--               showsPrec (up_prec+1) v
--            where up_prec = 5
--   </pre>
--   
--   Note that right-associativity of <tt>:^:</tt> is ignored. For example,
--   
--   <ul>
--   <li><tt><a>show</a> (Leaf 1 :^: Leaf 2 :^: Leaf 3)</tt> produces the
--   string <tt>"Leaf 1 :^: (Leaf 2 :^: Leaf 3)"</tt>.</li>
--   </ul>
class () => Show a

-- | Convert a value to a readable <a>String</a>.
--   
--   <a>showsPrec</a> should satisfy the law
--   
--   <pre>
--   showsPrec d x r ++ s  ==  showsPrec d x (r ++ s)
--   </pre>
--   
--   Derived instances of <a>Read</a> and <a>Show</a> satisfy the
--   following:
--   
--   <ul>
--   <li><tt>(x,"")</tt> is an element of <tt>(<a>readsPrec</a> d
--   (<a>showsPrec</a> d x ""))</tt>.</li>
--   </ul>
--   
--   That is, <a>readsPrec</a> parses the string produced by
--   <a>showsPrec</a>, and delivers the value that <a>showsPrec</a> started
--   with.
showsPrec :: Show a => Int -> a -> ShowS

-- | A specialised variant of <a>showsPrec</a>, using precedence context
--   zero, and returning an ordinary <a>String</a>.
show :: Show a => a -> String

-- | The method <a>showList</a> is provided to allow the programmer to give
--   a specialised way of showing lists of values. For example, this is
--   used by the predefined <a>Show</a> instance of the <a>Char</a> type,
--   where values of type <a>String</a> should be shown in double quotes,
--   rather than between square brackets.
showList :: Show a => [a] -> ShowS

-- | <a>IsString</a> is used in combination with the
--   <tt>-XOverloadedStrings</tt> language extension to convert the
--   literals to different string types.
--   
--   For example, if you use the <a>text</a> package, you can say
--   
--   <pre>
--   {-# LANGUAGE OverloadedStrings  #-}
--   
--   myText = "hello world" :: Text
--   </pre>
--   
--   Internally, the extension will convert this to the equivalent of
--   
--   <pre>
--   myText = fromString @Text ("hello world" :: String)
--   </pre>
--   
--   <b>Note:</b> You can use <tt>fromString</tt> in normal code as well,
--   but the usual performance/memory efficiency problems with
--   <a>String</a> apply.
class () => IsString a
fromString :: IsString a => String -> a

-- | A functor with application, providing operations to
--   
--   <ul>
--   <li>embed pure expressions (<a>pure</a>), and</li>
--   <li>sequence computations and combine their results (<a>&lt;*&gt;</a>
--   and <a>liftA2</a>).</li>
--   </ul>
--   
--   A minimal complete definition must include implementations of
--   <a>pure</a> and of either <a>&lt;*&gt;</a> or <a>liftA2</a>. If it
--   defines both, then they must behave the same as their default
--   definitions:
--   
--   <pre>
--   (<a>&lt;*&gt;</a>) = <a>liftA2</a> <a>id</a>
--   </pre>
--   
--   <pre>
--   <a>liftA2</a> f x y = f <a>&lt;$&gt;</a> x <a>&lt;*&gt;</a> y
--   </pre>
--   
--   Further, any definition must satisfy the following:
--   
--   <ul>
--   <li><i>Identity</i> <pre><a>pure</a> <a>id</a> <a>&lt;*&gt;</a> v =
--   v</pre></li>
--   <li><i>Composition</i> <pre><a>pure</a> (.) <a>&lt;*&gt;</a> u
--   <a>&lt;*&gt;</a> v <a>&lt;*&gt;</a> w = u <a>&lt;*&gt;</a> (v
--   <a>&lt;*&gt;</a> w)</pre></li>
--   <li><i>Homomorphism</i> <pre><a>pure</a> f <a>&lt;*&gt;</a>
--   <a>pure</a> x = <a>pure</a> (f x)</pre></li>
--   <li><i>Interchange</i> <pre>u <a>&lt;*&gt;</a> <a>pure</a> y =
--   <a>pure</a> (<a>$</a> y) <a>&lt;*&gt;</a> u</pre></li>
--   </ul>
--   
--   The other methods have the following default definitions, which may be
--   overridden with equivalent specialized implementations:
--   
--   <ul>
--   <li><pre>u <a>*&gt;</a> v = (<a>id</a> <a>&lt;$</a> u)
--   <a>&lt;*&gt;</a> v</pre></li>
--   <li><pre>u <a>&lt;*</a> v = <a>liftA2</a> <a>const</a> u v</pre></li>
--   </ul>
--   
--   As a consequence of these laws, the <a>Functor</a> instance for
--   <tt>f</tt> will satisfy
--   
--   <ul>
--   <li><pre><a>fmap</a> f x = <a>pure</a> f <a>&lt;*&gt;</a> x</pre></li>
--   </ul>
--   
--   It may be useful to note that supposing
--   
--   <pre>
--   forall x y. p (q x y) = f x . g y
--   </pre>
--   
--   it follows from the above that
--   
--   <pre>
--   <a>liftA2</a> p (<a>liftA2</a> q u v) = <a>liftA2</a> f u . <a>liftA2</a> g v
--   </pre>
--   
--   If <tt>f</tt> is also a <a>Monad</a>, it should satisfy
--   
--   <ul>
--   <li><pre><a>pure</a> = <a>return</a></pre></li>
--   <li><pre>m1 <a>&lt;*&gt;</a> m2 = m1 <a>&gt;&gt;=</a> (\x1 -&gt; m2
--   <a>&gt;&gt;=</a> (\x2 -&gt; <a>return</a> (x1 x2)))</pre></li>
--   <li><pre>(<a>*&gt;</a>) = (<a>&gt;&gt;</a>)</pre></li>
--   </ul>
--   
--   (which implies that <a>pure</a> and <a>&lt;*&gt;</a> satisfy the
--   applicative functor laws).
class Functor f => Applicative (f :: Type -> Type)

-- | Lift a value.
pure :: Applicative f => a -> f a

-- | Sequential application.
--   
--   A few functors support an implementation of <a>&lt;*&gt;</a> that is
--   more efficient than the default one.
--   
--   <h4><b>Example</b></h4>
--   
--   Used in combination with <tt>(<tt>&lt;$&gt;</tt>)</tt>,
--   <tt>(<a>&lt;*&gt;</a>)</tt> can be used to build a record.
--   
--   <pre>
--   &gt;&gt;&gt; data MyState = MyState {arg1 :: Foo, arg2 :: Bar, arg3 :: Baz}
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; produceFoo :: Applicative f =&gt; f Foo
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; produceBar :: Applicative f =&gt; f Bar
--   
--   &gt;&gt;&gt; produceBaz :: Applicative f =&gt; f Baz
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; mkState :: Applicative f =&gt; f MyState
--   
--   &gt;&gt;&gt; mkState = MyState &lt;$&gt; produceFoo &lt;*&gt; produceBar &lt;*&gt; produceBaz
--   </pre>
(<*>) :: Applicative f => f (a -> b) -> f a -> f b

-- | Lift a binary function to actions.
--   
--   Some functors support an implementation of <a>liftA2</a> that is more
--   efficient than the default one. In particular, if <a>fmap</a> is an
--   expensive operation, it is likely better to use <a>liftA2</a> than to
--   <a>fmap</a> over the structure and then use <a>&lt;*&gt;</a>.
--   
--   This became a typeclass method in 4.10.0.0. Prior to that, it was a
--   function defined in terms of <a>&lt;*&gt;</a> and <a>fmap</a>.
--   
--   <h4><b>Example</b></h4>
--   
--   <pre>
--   &gt;&gt;&gt; liftA2 (,) (Just 3) (Just 5)
--   Just (3,5)
--   </pre>
liftA2 :: Applicative f => (a -> b -> c) -> f a -> f b -> f c

-- | Sequence actions, discarding the value of the first argument.
--   
--   <h4><b>Examples</b></h4>
--   
--   If used in conjunction with the Applicative instance for <a>Maybe</a>,
--   you can chain Maybe computations, with a possible "early return" in
--   case of <a>Nothing</a>.
--   
--   <pre>
--   &gt;&gt;&gt; Just 2 *&gt; Just 3
--   Just 3
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; Nothing *&gt; Just 3
--   Nothing
--   </pre>
--   
--   Of course a more interesting use case would be to have effectful
--   computations instead of just returning pure values.
--   
--   <pre>
--   &gt;&gt;&gt; import Data.Char
--   
--   &gt;&gt;&gt; import Text.ParserCombinators.ReadP
--   
--   &gt;&gt;&gt; let p = string "my name is " *&gt; munch1 isAlpha &lt;* eof
--   
--   &gt;&gt;&gt; readP_to_S p "my name is Simon"
--   [("Simon","")]
--   </pre>
(*>) :: Applicative f => f a -> f b -> f b

-- | Sequence actions, discarding the value of the second argument.
(<*) :: Applicative f => f a -> f b -> f a
infixl 4 <*>
infixl 4 *>
infixl 4 <*

-- | The class of semigroups (types with an associative binary operation).
--   
--   Instances should satisfy the following:
--   
--   <ul>
--   <li><i>Associativity</i> <tt>x <a>&lt;&gt;</a> (y <a>&lt;&gt;</a> z) =
--   (x <a>&lt;&gt;</a> y) <a>&lt;&gt;</a> z</tt></li>
--   </ul>
--   
--   You can alternatively define <a>sconcat</a> instead of
--   (<a>&lt;&gt;</a>), in which case the laws are:
--   
--   <ul>
--   <li><i>Unit</i> <tt><a>sconcat</a> (<a>pure</a> x) = x</tt></li>
--   <li><i>Multiplication</i> <tt><a>sconcat</a> (<a>join</a> xss) =
--   <a>sconcat</a> (<a>fmap</a> <a>sconcat</a> xss)</tt></li>
--   </ul>
class () => Semigroup a

-- | An associative operation.
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt;&gt;&gt; [1,2,3] &lt;&gt; [4,5,6]
--   [1,2,3,4,5,6]
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; Just [1, 2, 3] &lt;&gt; Just [4, 5, 6]
--   Just [1,2,3,4,5,6]
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; putStr "Hello, " &lt;&gt; putStrLn "World!"
--   Hello, World!
--   </pre>
(<>) :: Semigroup a => a -> a -> a

-- | Reduce a non-empty list with <a>&lt;&gt;</a>
--   
--   The default definition should be sufficient, but this can be
--   overridden for efficiency.
--   
--   <h4><b>Examples</b></h4>
--   
--   For the following examples, we will assume that we have:
--   
--   <pre>
--   &gt;&gt;&gt; import Data.List.NonEmpty (NonEmpty (..))
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; sconcat $ "Hello" :| [" ", "Haskell", "!"]
--   "Hello Haskell!"
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; sconcat $ Just [1, 2, 3] :| [Nothing, Just [4, 5, 6]]
--   Just [1,2,3,4,5,6]
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; sconcat $ Left 1 :| [Right 2, Left 3, Right 4]
--   Right 2
--   </pre>
sconcat :: Semigroup a => NonEmpty a -> a

-- | Repeat a value <tt>n</tt> times.
--   
--   The default definition will raise an exception for a multiplier that
--   is <tt>&lt;= 0</tt>. This may be overridden with an implementation
--   that is total. For monoids it is preferred to use
--   <tt>stimesMonoid</tt>.
--   
--   By making this a member of the class, idempotent semigroups and
--   monoids can upgrade this to execute in &lt;math&gt; by picking
--   <tt>stimes = <a>stimesIdempotent</a></tt> or <tt>stimes =
--   <a>stimesIdempotentMonoid</a></tt> respectively.
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt;&gt;&gt; stimes 4 [1]
--   [1,1,1,1]
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; stimes 5 (putStr "hi!")
--   hi!hi!hi!hi!hi!
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; stimes 3 (Right ":)")
--   Right ":)"
--   </pre>
stimes :: (Semigroup a, Integral b) => b -> a -> a
infixr 6 <>

-- | The class of monoids (types with an associative binary operation that
--   has an identity). Instances should satisfy the following:
--   
--   <ul>
--   <li><i>Right identity</i> <tt>x <a>&lt;&gt;</a> <a>mempty</a> =
--   x</tt></li>
--   <li><i>Left identity</i> <tt><a>mempty</a> <a>&lt;&gt;</a> x =
--   x</tt></li>
--   <li><i>Associativity</i> <tt>x <a>&lt;&gt;</a> (y <a>&lt;&gt;</a> z) =
--   (x <a>&lt;&gt;</a> y) <a>&lt;&gt;</a> z</tt> (<a>Semigroup</a>
--   law)</li>
--   <li><i>Concatenation</i> <tt><a>mconcat</a> = <a>foldr</a>
--   (<a>&lt;&gt;</a>) <a>mempty</a></tt></li>
--   </ul>
--   
--   You can alternatively define <a>mconcat</a> instead of <a>mempty</a>,
--   in which case the laws are:
--   
--   <ul>
--   <li><i>Unit</i> <tt><a>mconcat</a> (<a>pure</a> x) = x</tt></li>
--   <li><i>Multiplication</i> <tt><a>mconcat</a> (<a>join</a> xss) =
--   <a>mconcat</a> (<a>fmap</a> <a>mconcat</a> xss)</tt></li>
--   <li><i>Subclass</i> <tt><a>mconcat</a> (<tt>toList</tt> xs) =
--   <a>sconcat</a> xs</tt></li>
--   </ul>
--   
--   The method names refer to the monoid of lists under concatenation, but
--   there are many other instances.
--   
--   Some types can be viewed as a monoid in more than one way, e.g. both
--   addition and multiplication on numbers. In such cases we often define
--   <tt>newtype</tt>s and make those instances of <a>Monoid</a>, e.g.
--   <a>Sum</a> and <a>Product</a>.
--   
--   <b>NOTE</b>: <a>Semigroup</a> is a superclass of <a>Monoid</a> since
--   <i>base-4.11.0.0</i>.
class Semigroup a => Monoid a

-- | Identity of <a>mappend</a>
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt;&gt;&gt; "Hello world" &lt;&gt; mempty
--   "Hello world"
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; mempty &lt;&gt; [1, 2, 3]
--   [1,2,3]
--   </pre>
mempty :: Monoid a => a

-- | An associative operation
--   
--   <b>NOTE</b>: This method is redundant and has the default
--   implementation <tt><a>mappend</a> = (<a>&lt;&gt;</a>)</tt> since
--   <i>base-4.11.0.0</i>. Should it be implemented manually, since
--   <a>mappend</a> is a synonym for (<a>&lt;&gt;</a>), it is expected that
--   the two functions are defined the same way. In a future GHC release
--   <a>mappend</a> will be removed from <a>Monoid</a>.
mappend :: Monoid a => a -> a -> a

-- | Fold a list using the monoid.
--   
--   For most types, the default definition for <a>mconcat</a> will be
--   used, but the function is included in the class definition so that an
--   optimized version can be provided for specific types.
--   
--   <pre>
--   &gt;&gt;&gt; mconcat ["Hello", " ", "Haskell", "!"]
--   "Hello Haskell!"
--   </pre>
mconcat :: Monoid a => [a] -> a
data () => Bool
False :: Bool
True :: Bool

-- | <a>String</a> is an alias for a list of characters.
--   
--   String constants in Haskell are values of type <a>String</a>. That
--   means if you write a string literal like <tt>"hello world"</tt>, it
--   will have the type <tt>[Char]</tt>, which is the same as
--   <tt>String</tt>.
--   
--   <b>Note:</b> You can ask the compiler to automatically infer different
--   types with the <tt>-XOverloadedStrings</tt> language extension, for
--   example <tt>"hello world" :: Text</tt>. See <a>IsString</a> for more
--   information.
--   
--   Because <tt>String</tt> is just a list of characters, you can use
--   normal list functions to do basic string manipulation. See
--   <a>Data.List</a> for operations on lists.
--   
--   <h3><b>Performance considerations</b></h3>
--   
--   <tt>[Char]</tt> is a relatively memory-inefficient type. It is a
--   linked list of boxed word-size characters, internally it looks
--   something like:
--   
--   <pre>
--   ╭─────┬───┬──╮  ╭─────┬───┬──╮  ╭─────┬───┬──╮  ╭────╮
--   │ (:) │   │ ─┼─&gt;│ (:) │   │ ─┼─&gt;│ (:) │   │ ─┼─&gt;│ [] │
--   ╰─────┴─┼─┴──╯  ╰─────┴─┼─┴──╯  ╰─────┴─┼─┴──╯  ╰────╯
--           v               v               v
--          'a'             'b'             'c'
--   </pre>
--   
--   The <tt>String</tt> "abc" will use <tt>5*3+1 = 16</tt> (in general
--   <tt>5n+1</tt>) words of space in memory.
--   
--   Furthermore, operations like <a>(++)</a> (string concatenation) are
--   <tt>O(n)</tt> (in the left argument).
--   
--   For historical reasons, the <tt>base</tt> library uses <tt>String</tt>
--   in a lot of places for the conceptual simplicity, but library code
--   dealing with user-data should use the <a>text</a> package for Unicode
--   text, or the the <a>bytestring</a> package for binary data.
type String = [Char]

-- | The character type <a>Char</a> is an enumeration whose values
--   represent Unicode (or equivalently ISO/IEC 10646) code points (i.e.
--   characters, see <a>http://www.unicode.org/</a> for details). This set
--   extends the ISO 8859-1 (Latin-1) character set (the first 256
--   characters), which is itself an extension of the ASCII character set
--   (the first 128 characters). A character literal in Haskell has type
--   <a>Char</a>.
--   
--   To convert a <a>Char</a> to or from the corresponding <a>Int</a> value
--   defined by Unicode, use <a>toEnum</a> and <a>fromEnum</a> from the
--   <a>Enum</a> class respectively (or equivalently <a>ord</a> and
--   <a>chr</a>).
data () => Char

-- | Double-precision floating point numbers. It is desirable that this
--   type be at least equal in range and precision to the IEEE
--   double-precision type.
data () => Double

-- | Single-precision floating point numbers. It is desirable that this
--   type be at least equal in range and precision to the IEEE
--   single-precision type.
data () => Float

-- | A fixed-precision integer type with at least the range <tt>[-2^29 ..
--   2^29-1]</tt>. The exact range for a given implementation can be
--   determined by using <a>minBound</a> and <a>maxBound</a> from the
--   <a>Bounded</a> class.
data () => Int

-- | 32-bit signed integer type
data () => Int32

-- | 64-bit signed integer type
data () => Int64

-- | Arbitrary precision integers. In contrast with fixed-size integral
--   types such as <a>Int</a>, the <a>Integer</a> type represents the
--   entire infinite range of integers.
--   
--   Integers are stored in a kind of sign-magnitude form, hence do not
--   expect two's complement form when using bit operations.
--   
--   If the value is small (fit into an <a>Int</a>), <a>IS</a> constructor
--   is used. Otherwise <a>Integer</a> and <a>IN</a> constructors are used
--   to store a <a>BigNat</a> representing respectively the positive or the
--   negative value magnitude.
--   
--   Invariant: <a>Integer</a> and <a>IN</a> are used iff value doesn't fit
--   in <a>IS</a>
data () => Integer

-- | The <a>Maybe</a> type encapsulates an optional value. A value of type
--   <tt><a>Maybe</a> a</tt> either contains a value of type <tt>a</tt>
--   (represented as <tt><a>Just</a> a</tt>), or it is empty (represented
--   as <a>Nothing</a>). Using <a>Maybe</a> is a good way to deal with
--   errors or exceptional cases without resorting to drastic measures such
--   as <a>error</a>.
--   
--   The <a>Maybe</a> type is also a monad. It is a simple kind of error
--   monad, where all errors are represented by <a>Nothing</a>. A richer
--   error monad can be built using the <a>Either</a> type.
data () => Maybe a
Nothing :: Maybe a
Just :: a -> Maybe a
data () => Ordering
LT :: Ordering
EQ :: Ordering
GT :: Ordering

-- | Arbitrary-precision rational numbers, represented as a ratio of two
--   <a>Integer</a> values. A rational number may be constructed using the
--   <a>%</a> operator.
type Rational = Ratio Integer

-- | A value of type <tt><a>IO</a> a</tt> is a computation which, when
--   performed, does some I/O before returning a value of type <tt>a</tt>.
--   
--   There is really only one way to "perform" an I/O action: bind it to
--   <tt>Main.main</tt> in your program. When your program is run, the I/O
--   will be performed. It isn't possible to perform I/O from an arbitrary
--   function, unless that function is itself in the <a>IO</a> monad and
--   called at some point, directly or indirectly, from <tt>Main.main</tt>.
--   
--   <a>IO</a> is a monad, so <a>IO</a> actions can be combined using
--   either the do-notation or the <a>&gt;&gt;</a> and <a>&gt;&gt;=</a>
--   operations from the <a>Monad</a> class.
data () => IO a

-- | A <a>Word</a> is an unsigned integral type, with the same size as
--   <a>Int</a>.
data () => Word

-- | 8-bit unsigned integer type
data () => Word8

-- | 32-bit unsigned integer type
data () => Word32

-- | 64-bit unsigned integer type
data () => Word64

-- | The <a>Either</a> type represents values with two possibilities: a
--   value of type <tt><a>Either</a> a b</tt> is either <tt><a>Left</a>
--   a</tt> or <tt><a>Right</a> b</tt>.
--   
--   The <a>Either</a> type is sometimes used to represent a value which is
--   either correct or an error; by convention, the <a>Left</a> constructor
--   is used to hold an error value and the <a>Right</a> constructor is
--   used to hold a correct value (mnemonic: "right" also means "correct").
--   
--   <h4><b>Examples</b></h4>
--   
--   The type <tt><a>Either</a> <a>String</a> <a>Int</a></tt> is the type
--   of values which can be either a <a>String</a> or an <a>Int</a>. The
--   <a>Left</a> constructor can be used only on <a>String</a>s, and the
--   <a>Right</a> constructor can be used only on <a>Int</a>s:
--   
--   <pre>
--   &gt;&gt;&gt; let s = Left "foo" :: Either String Int
--   
--   &gt;&gt;&gt; s
--   Left "foo"
--   
--   &gt;&gt;&gt; let n = Right 3 :: Either String Int
--   
--   &gt;&gt;&gt; n
--   Right 3
--   
--   &gt;&gt;&gt; :type s
--   s :: Either String Int
--   
--   &gt;&gt;&gt; :type n
--   n :: Either String Int
--   </pre>
--   
--   The <a>fmap</a> from our <a>Functor</a> instance will ignore
--   <a>Left</a> values, but will apply the supplied function to values
--   contained in a <a>Right</a>:
--   
--   <pre>
--   &gt;&gt;&gt; let s = Left "foo" :: Either String Int
--   
--   &gt;&gt;&gt; let n = Right 3 :: Either String Int
--   
--   &gt;&gt;&gt; fmap (*2) s
--   Left "foo"
--   
--   &gt;&gt;&gt; fmap (*2) n
--   Right 6
--   </pre>
--   
--   The <a>Monad</a> instance for <a>Either</a> allows us to chain
--   together multiple actions which may fail, and fail overall if any of
--   the individual steps failed. First we'll write a function that can
--   either parse an <a>Int</a> from a <a>Char</a>, or fail.
--   
--   <pre>
--   &gt;&gt;&gt; import Data.Char ( digitToInt, isDigit )
--   
--   &gt;&gt;&gt; :{
--       let parseEither :: Char -&gt; Either String Int
--           parseEither c
--             | isDigit c = Right (digitToInt c)
--             | otherwise = Left "parse error"
--   
--   &gt;&gt;&gt; :}
--   </pre>
--   
--   The following should work, since both <tt>'1'</tt> and <tt>'2'</tt>
--   can be parsed as <a>Int</a>s.
--   
--   <pre>
--   &gt;&gt;&gt; :{
--       let parseMultiple :: Either String Int
--           parseMultiple = do
--             x &lt;- parseEither '1'
--             y &lt;- parseEither '2'
--             return (x + y)
--   
--   &gt;&gt;&gt; :}
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; parseMultiple
--   Right 3
--   </pre>
--   
--   But the following should fail overall, since the first operation where
--   we attempt to parse <tt>'m'</tt> as an <a>Int</a> will fail:
--   
--   <pre>
--   &gt;&gt;&gt; :{
--       let parseMultiple :: Either String Int
--           parseMultiple = do
--             x &lt;- parseEither 'm'
--             y &lt;- parseEither '2'
--             return (x + y)
--   
--   &gt;&gt;&gt; :}
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; parseMultiple
--   Left "parse error"
--   </pre>
data () => Either a b
Left :: a -> Either a b
Right :: b -> Either a b

-- | The <tt>SomeException</tt> type is the root of the exception type
--   hierarchy. When an exception of type <tt>e</tt> is thrown, behind the
--   scenes it is encapsulated in a <tt>SomeException</tt>.
data () => SomeException
SomeException :: e -> SomeException

-- | Monads that also support choice and failure.
class (Alternative m, Monad m) => MonadPlus (m :: Type -> Type)

-- | The identity of <a>mplus</a>. It should also satisfy the equations
--   
--   <pre>
--   mzero &gt;&gt;= f  =  mzero
--   v &gt;&gt; mzero   =  mzero
--   </pre>
--   
--   The default definition is
--   
--   <pre>
--   mzero = <a>empty</a>
--   </pre>
mzero :: MonadPlus m => m a

-- | An associative operation. The default definition is
--   
--   <pre>
--   mplus = (<a>&lt;|&gt;</a>)
--   </pre>
mplus :: MonadPlus m => m a -> m a -> m a

-- | A monoid on applicative functors.
--   
--   If defined, <a>some</a> and <a>many</a> should be the least solutions
--   of the equations:
--   
--   <ul>
--   <li><pre><a>some</a> v = (:) <a>&lt;$&gt;</a> v <a>&lt;*&gt;</a>
--   <a>many</a> v</pre></li>
--   <li><pre><a>many</a> v = <a>some</a> v <a>&lt;|&gt;</a> <a>pure</a>
--   []</pre></li>
--   </ul>
class Applicative f => Alternative (f :: Type -> Type)

-- | The identity of <a>&lt;|&gt;</a>
empty :: Alternative f => f a

-- | An associative binary operation
(<|>) :: Alternative f => f a -> f a -> f a

-- | One or more.
some :: Alternative f => f a -> f [a]

-- | Zero or more.
many :: Alternative f => f a -> f [a]
infixl 3 <|>

-- | <a>Proxy</a> is a type that holds no data, but has a phantom parameter
--   of arbitrary type (or even kind). Its use is to provide type
--   information, even though there is no value available of that type (or
--   it may be too costly to create one).
--   
--   Historically, <tt><a>Proxy</a> :: <a>Proxy</a> a</tt> is a safer
--   alternative to the <tt><a>undefined</a> :: a</tt> idiom.
--   
--   <pre>
--   &gt;&gt;&gt; Proxy :: Proxy (Void, Int -&gt; Int)
--   Proxy
--   </pre>
--   
--   Proxy can even hold types of higher kinds,
--   
--   <pre>
--   &gt;&gt;&gt; Proxy :: Proxy Either
--   Proxy
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; Proxy :: Proxy Functor
--   Proxy
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; Proxy :: Proxy complicatedStructure
--   Proxy
--   </pre>
data () => Proxy (t :: k)
Proxy :: Proxy (t :: k)

-- | Any type that you wish to throw or catch as an exception must be an
--   instance of the <tt>Exception</tt> class. The simplest case is a new
--   exception type directly below the root:
--   
--   <pre>
--   data MyException = ThisException | ThatException
--       deriving Show
--   
--   instance Exception MyException
--   </pre>
--   
--   The default method definitions in the <tt>Exception</tt> class do what
--   we need in this case. You can now throw and catch
--   <tt>ThisException</tt> and <tt>ThatException</tt> as exceptions:
--   
--   <pre>
--   *Main&gt; throw ThisException `catch` \e -&gt; putStrLn ("Caught " ++ show (e :: MyException))
--   Caught ThisException
--   </pre>
--   
--   In more complicated examples, you may wish to define a whole hierarchy
--   of exceptions:
--   
--   <pre>
--   ---------------------------------------------------------------------
--   -- Make the root exception type for all the exceptions in a compiler
--   
--   data SomeCompilerException = forall e . Exception e =&gt; SomeCompilerException e
--   
--   instance Show SomeCompilerException where
--       show (SomeCompilerException e) = show e
--   
--   instance Exception SomeCompilerException
--   
--   compilerExceptionToException :: Exception e =&gt; e -&gt; SomeException
--   compilerExceptionToException = toException . SomeCompilerException
--   
--   compilerExceptionFromException :: Exception e =&gt; SomeException -&gt; Maybe e
--   compilerExceptionFromException x = do
--       SomeCompilerException a &lt;- fromException x
--       cast a
--   
--   ---------------------------------------------------------------------
--   -- Make a subhierarchy for exceptions in the frontend of the compiler
--   
--   data SomeFrontendException = forall e . Exception e =&gt; SomeFrontendException e
--   
--   instance Show SomeFrontendException where
--       show (SomeFrontendException e) = show e
--   
--   instance Exception SomeFrontendException where
--       toException = compilerExceptionToException
--       fromException = compilerExceptionFromException
--   
--   frontendExceptionToException :: Exception e =&gt; e -&gt; SomeException
--   frontendExceptionToException = toException . SomeFrontendException
--   
--   frontendExceptionFromException :: Exception e =&gt; SomeException -&gt; Maybe e
--   frontendExceptionFromException x = do
--       SomeFrontendException a &lt;- fromException x
--       cast a
--   
--   ---------------------------------------------------------------------
--   -- Make an exception type for a particular frontend compiler exception
--   
--   data MismatchedParentheses = MismatchedParentheses
--       deriving Show
--   
--   instance Exception MismatchedParentheses where
--       toException   = frontendExceptionToException
--       fromException = frontendExceptionFromException
--   </pre>
--   
--   We can now catch a <tt>MismatchedParentheses</tt> exception as
--   <tt>MismatchedParentheses</tt>, <tt>SomeFrontendException</tt> or
--   <tt>SomeCompilerException</tt>, but not other types, e.g.
--   <tt>IOException</tt>:
--   
--   <pre>
--   *Main&gt; throw MismatchedParentheses `catch` \e -&gt; putStrLn ("Caught " ++ show (e :: MismatchedParentheses))
--   Caught MismatchedParentheses
--   *Main&gt; throw MismatchedParentheses `catch` \e -&gt; putStrLn ("Caught " ++ show (e :: SomeFrontendException))
--   Caught MismatchedParentheses
--   *Main&gt; throw MismatchedParentheses `catch` \e -&gt; putStrLn ("Caught " ++ show (e :: SomeCompilerException))
--   Caught MismatchedParentheses
--   *Main&gt; throw MismatchedParentheses `catch` \e -&gt; putStrLn ("Caught " ++ show (e :: IOException))
--   *** Exception: MismatchedParentheses
--   </pre>
class (Typeable e, Show e) => Exception e
toException :: Exception e => e -> SomeException
fromException :: Exception e => SomeException -> Maybe e

-- | Render this exception value in a human-friendly manner.
--   
--   Default implementation: <tt><a>show</a></tt>.
displayException :: Exception e => e -> String

-- | The Haskell 2010 type for exceptions in the <a>IO</a> monad. Any I/O
--   operation may raise an <a>IOException</a> instead of returning a
--   result. For a more general type of exception, including also those
--   that arise in pure code, see <a>Exception</a>.
--   
--   In Haskell 2010, this is an opaque type.
type IOError = IOException

-- | File and directory names are values of type <a>String</a>, whose
--   precise meaning is operating system dependent. Files can be opened,
--   yielding a handle which can then be used to operate on the contents of
--   that file.
type FilePath = String

-- | Identity functor and monad. (a non-strict monad)
newtype () => Identity a
Identity :: a -> Identity a
[runIdentity] :: Identity a -> a

-- | A set of values <tt>a</tt>.
data () => Set a

-- | A Map from keys <tt>k</tt> to values <tt>a</tt>.
--   
--   The <a>Semigroup</a> operation for <a>Map</a> is <a>union</a>, which
--   prefers values from the left operand. If <tt>m1</tt> maps a key
--   <tt>k</tt> to a value <tt>a1</tt>, and <tt>m2</tt> maps the same key
--   to a different value <tt>a2</tt>, then their union <tt>m1 &lt;&gt;
--   m2</tt> maps <tt>k</tt> to <tt>a1</tt>.
data () => Map k a

-- | A class of types that can be fully evaluated.
class () => NFData a

-- | <a>rnf</a> should reduce its argument to normal form (that is, fully
--   evaluate all sub-components), and then return <tt>()</tt>.
--   
--   <h3><a>Generic</a> <a>NFData</a> deriving</h3>
--   
--   Starting with GHC 7.2, you can automatically derive instances for
--   types possessing a <a>Generic</a> instance.
--   
--   Note: <a>Generic1</a> can be auto-derived starting with GHC 7.4
--   
--   <pre>
--   {-# LANGUAGE DeriveGeneric #-}
--   
--   import GHC.Generics (Generic, Generic1)
--   import Control.DeepSeq
--   
--   data Foo a = Foo a String
--                deriving (Eq, Generic, Generic1)
--   
--   instance NFData a =&gt; NFData (Foo a)
--   instance NFData1 Foo
--   
--   data Colour = Red | Green | Blue
--                 deriving Generic
--   
--   instance NFData Colour
--   </pre>
--   
--   Starting with GHC 7.10, the example above can be written more
--   concisely by enabling the new <tt>DeriveAnyClass</tt> extension:
--   
--   <pre>
--   {-# LANGUAGE DeriveGeneric, DeriveAnyClass #-}
--   
--   import GHC.Generics (Generic)
--   import Control.DeepSeq
--   
--   data Foo a = Foo a String
--                deriving (Eq, Generic, Generic1, NFData, NFData1)
--   
--   data Colour = Red | Green | Blue
--                 deriving (Generic, NFData)
--   </pre>
--   
--   <h3>Compatibility with previous <tt>deepseq</tt> versions</h3>
--   
--   Prior to version 1.4.0.0, the default implementation of the <a>rnf</a>
--   method was defined as
--   
--   <pre>
--   <a>rnf</a> a = <a>seq</a> a ()
--   </pre>
--   
--   However, starting with <tt>deepseq-1.4.0.0</tt>, the default
--   implementation is based on <tt>DefaultSignatures</tt> allowing for
--   more accurate auto-derived <a>NFData</a> instances. If you need the
--   previously used exact default <a>rnf</a> method implementation
--   semantics, use
--   
--   <pre>
--   instance NFData Colour where rnf x = seq x ()
--   </pre>
--   
--   or alternatively
--   
--   <pre>
--   instance NFData Colour where rnf = rwhnf
--   </pre>
--   
--   or
--   
--   <pre>
--   {-# LANGUAGE BangPatterns #-}
--   instance NFData Colour where rnf !_ = ()
--   </pre>
rnf :: NFData a => a -> ()

-- | <a>RealWorld</a> is deeply magical. It is <i>primitive</i>, but it is
--   not <i>unlifted</i> (hence <tt>ptrArg</tt>). We never manipulate
--   values of type <a>RealWorld</a>; it's only used in the type system, to
--   parameterise <a>State#</a>.
data RealWorld

-- | A space-efficient representation of a <a>Word8</a> vector, supporting
--   many efficient operations.
--   
--   A <a>ByteString</a> contains 8-bit bytes, or by using the operations
--   from <a>Data.ByteString.Char8</a> it can be interpreted as containing
--   8-bit characters.
data () => ByteString
data () => DList a

-- | See examples in <a>Control.Monad.Reader</a>. Note, the partially
--   applied function type <tt>(-&gt;) r</tt> is a simple reader monad. See
--   the <tt>instance</tt> declaration below.
class Monad m => MonadReader r (m :: Type -> Type) | m -> r

-- | Retrieves the monad environment.
ask :: MonadReader r m => m r

-- | The reader monad transformer, which adds a read-only environment to
--   the given monad.
--   
--   The <a>return</a> function ignores the environment, while
--   <tt>&gt;&gt;=</tt> passes the inherited environment to both
--   subcomputations.
newtype () => ReaderT r (m :: Type -> Type) a
ReaderT :: (r -> m a) -> ReaderT r (m :: Type -> Type) a
[runReaderT] :: ReaderT r (m :: Type -> Type) a -> r -> m a

-- | The parameterizable reader monad.
--   
--   Computations are functions of a shared environment.
--   
--   The <a>return</a> function ignores the environment, while
--   <tt>&gt;&gt;=</tt> passes the inherited environment to both
--   subcomputations.
type Reader r = ReaderT r Identity

-- | <a>SemiSequence</a> was created to share code between
--   <a>IsSequence</a> and <tt>NonNull</tt>.
--   
--   <tt>Semi</tt> means <tt>SemiGroup</tt> A <a>SemiSequence</a> can
--   accommodate a <tt>SemiGroup</tt> such as <tt>NonEmpty</tt> or
--   <tt>NonNull</tt> A Monoid should be able to fill out
--   <a>IsSequence</a>.
--   
--   <a>SemiSequence</a> operations maintain the same type because they all
--   maintain the same number of elements or increase them. However, a
--   decreasing function such as filter may change they type. For example,
--   from <tt>NonEmpty</tt> to '[]' This type-changing function exists on
--   <tt>NonNull</tt> as <tt>nfilter</tt>
--   
--   <a>filter</a> and other such functions are placed in <a>IsSequence</a>
--   
--   <i>NOTE</i>: Like <a>GrowingAppend</a>, ideally we'd have a
--   <tt>Semigroup</tt> superclass constraint here, but that would pull in
--   more dependencies to this package than desired.
class (Integral Index seq, GrowingAppend seq) => SemiSequence seq where {
    
    -- | The type of the index of a sequence.
    type family Index seq;
}

-- | <a>intersperse</a> takes an element and intersperses that element
--   between the elements of the sequence.
--   
--   <pre>
--   &gt; <a>intersperse</a> ',' "abcde"
--   "a,b,c,d,e"
--   </pre>
intersperse :: SemiSequence seq => Element seq -> seq -> seq

-- | Reverse a sequence
--   
--   <pre>
--   &gt; <a>reverse</a> "hello world"
--   "dlrow olleh"
--   </pre>
reverse :: SemiSequence seq => seq -> seq

-- | <a>find</a> takes a predicate and a sequence and returns the first
--   element in the sequence matching the predicate, or <a>Nothing</a> if
--   there isn't an element that matches the predicate.
--   
--   <pre>
--   &gt; <a>find</a> (== 5) [1 .. 10]
--   <a>Just</a> 5
--   
--   &gt; <a>find</a> (== 15) [1 .. 10]
--   <a>Nothing</a>
--   </pre>
find :: SemiSequence seq => (Element seq -> Bool) -> seq -> Maybe (Element seq)

-- | Sort a sequence using an supplied element ordering function.
--   
--   <pre>
--   &gt; let compare' x y = case <a>compare</a> x y of LT -&gt; GT; EQ -&gt; EQ; GT -&gt; LT
--   &gt; <a>sortBy</a> compare' [5,3,6,1,2,4]
--   [6,5,4,3,2,1]
--   </pre>
sortBy :: SemiSequence seq => (Element seq -> Element seq -> Ordering) -> seq -> seq

-- | Prepend an element onto a sequence.
--   
--   <pre>
--   &gt; 4 `<a>cons</a>` [1,2,3]
--   [4,1,2,3]
--   </pre>
cons :: SemiSequence seq => Element seq -> seq -> seq

-- | Append an element onto a sequence.
--   
--   <pre>
--   &gt; [1,2,3] `<a>snoc</a>` 4
--   [1,2,3,4]
--   </pre>
snoc :: SemiSequence seq => seq -> Element seq -> seq

-- | The type of the index of a sequence.
type family Index seq

-- | A map from keys to values. A map cannot contain duplicate keys; each
--   key can map to at most one value.
data () => HashMap k v

-- | A space efficient, packed, unboxed Unicode text type.
data () => Text

-- | This is the simplest representation of UTC. It consists of the day
--   number, and a time offset from midnight. Note that if a day has a leap
--   second added to it, it will have 86401 seconds.
data () => UTCTime
UTCTime :: Day -> DiffTime -> UTCTime

-- | the day
[utctDay] :: UTCTime -> Day

-- | the time from midnight, 0 &lt;= t &lt; 86401s (because of
--   leap-seconds)
[utctDayTime] :: UTCTime -> DiffTime
class Eq a => Hashable a
hashWithSalt :: Hashable a => Int -> a -> Int
hash :: Hashable a => a -> Int
class Monoid builder => Builder builder lazy | builder -> lazy, lazy -> builder
builderToLazy :: Builder builder lazy => builder -> lazy
flushBuilder :: Builder builder lazy => builder

-- | Haskell defines operations to read and write characters from and to
--   files, represented by values of type <tt>Handle</tt>. Each value of
--   this type is a <i>handle</i>: a record used by the Haskell run-time
--   system to <i>manage</i> I/O with file system objects. A handle has at
--   least the following properties:
--   
--   <ul>
--   <li>whether it manages input or output or both;</li>
--   <li>whether it is <i>open</i>, <i>closed</i> or
--   <i>semi-closed</i>;</li>
--   <li>whether the object is seekable;</li>
--   <li>whether buffering is disabled, or enabled on a line or block
--   basis;</li>
--   <li>a buffer (whose length may be zero).</li>
--   </ul>
--   
--   Most handles will also have a current I/O position indicating where
--   the next input or output operation will occur. A handle is
--   <i>readable</i> if it manages only input or both input and output;
--   likewise, it is <i>writable</i> if it manages only output or both
--   input and output. A handle is <i>open</i> when first allocated. Once
--   it is closed it can no longer be used for either input or output,
--   though an implementation cannot re-use its storage while references
--   remain to it. Handles are in the <a>Show</a> and <a>Eq</a> classes.
--   The string produced by showing a handle is system dependent; it should
--   include enough information to identify the handle for debugging. A
--   handle is equal according to <a>==</a> only to itself; no attempt is
--   made to compare the internal state of different handles for equality.
data () => Handle

-- | A bifunctor is a type constructor that takes two type arguments and is
--   a functor in <i>both</i> arguments. That is, unlike with
--   <a>Functor</a>, a type constructor such as <a>Either</a> does not need
--   to be partially applied for a <a>Bifunctor</a> instance, and the
--   methods in this class permit mapping functions over the <a>Left</a>
--   value or the <a>Right</a> value, or both at the same time.
--   
--   Formally, the class <a>Bifunctor</a> represents a bifunctor from
--   <tt>Hask</tt> -&gt; <tt>Hask</tt>.
--   
--   Intuitively it is a bifunctor where both the first and second
--   arguments are covariant.
--   
--   You can define a <a>Bifunctor</a> by either defining <a>bimap</a> or
--   by defining both <a>first</a> and <a>second</a>. A partially applied
--   <a>Bifunctor</a> must be a <a>Functor</a> and the <a>second</a> method
--   must agree with <a>fmap</a>. From this it follows that:
--   
--   <pre>
--   <a>second</a> <a>id</a> = <a>id</a>
--   </pre>
--   
--   If you supply <a>bimap</a>, you should ensure that:
--   
--   <pre>
--   <a>bimap</a> <a>id</a> <a>id</a> ≡ <a>id</a>
--   </pre>
--   
--   If you supply <a>first</a> and <a>second</a>, ensure:
--   
--   <pre>
--   <a>first</a> <a>id</a> ≡ <a>id</a>
--   <a>second</a> <a>id</a> ≡ <a>id</a>
--   </pre>
--   
--   If you supply both, you should also ensure:
--   
--   <pre>
--   <a>bimap</a> f g ≡ <a>first</a> f <a>.</a> <a>second</a> g
--   </pre>
--   
--   These ensure by parametricity:
--   
--   <pre>
--   <a>bimap</a>  (f <a>.</a> g) (h <a>.</a> i) ≡ <a>bimap</a> f h <a>.</a> <a>bimap</a> g i
--   <a>first</a>  (f <a>.</a> g) ≡ <a>first</a>  f <a>.</a> <a>first</a>  g
--   <a>second</a> (f <a>.</a> g) ≡ <a>second</a> f <a>.</a> <a>second</a> g
--   </pre>
--   
--   Since 4.18.0.0 <a>Functor</a> is a superclass of 'Bifunctor.
class forall a. () => Functor p a => Bifunctor (p :: Type -> Type -> Type)

-- | Map over both arguments at the same time.
--   
--   <pre>
--   <a>bimap</a> f g ≡ <a>first</a> f <a>.</a> <a>second</a> g
--   </pre>
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt;&gt;&gt; bimap toUpper (+1) ('j', 3)
--   ('J',4)
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; bimap toUpper (+1) (Left 'j')
--   Left 'J'
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; bimap toUpper (+1) (Right 3)
--   Right 4
--   </pre>
bimap :: Bifunctor p => (a -> b) -> (c -> d) -> p a c -> p b d

-- | Map covariantly over the first argument.
--   
--   <pre>
--   <a>first</a> f ≡ <a>bimap</a> f <a>id</a>
--   </pre>
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt;&gt;&gt; first toUpper ('j', 3)
--   ('J',3)
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; first toUpper (Left 'j')
--   Left 'J'
--   </pre>
first :: Bifunctor p => (a -> b) -> p a c -> p b c

-- | Map covariantly over the second argument.
--   
--   <pre>
--   <a>second</a> ≡ <a>bimap</a> <a>id</a>
--   </pre>
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt;&gt;&gt; second (+1) ('j', 3)
--   ('j',4)
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; second (+1) (Right 3)
--   Right 4
--   </pre>
second :: Bifunctor p => (b -> c) -> p a b -> p a c

-- | A monad supporting atomic memory transactions.
data () => STM a

-- | The member functions of this class facilitate writing values of
--   primitive types to raw memory (which may have been allocated with the
--   above mentioned routines) and reading values from blocks of raw
--   memory. The class, furthermore, includes support for computing the
--   storage requirements and alignment restrictions of storable types.
--   
--   Memory addresses are represented as values of type <tt><a>Ptr</a>
--   a</tt>, for some <tt>a</tt> which is an instance of class
--   <a>Storable</a>. The type argument to <a>Ptr</a> helps provide some
--   valuable type safety in FFI code (you can't mix pointers of different
--   types without an explicit cast), while helping the Haskell type system
--   figure out which marshalling method is needed for a given pointer.
--   
--   All marshalling between Haskell and a foreign language ultimately
--   boils down to translating Haskell data structures into the binary
--   representation of a corresponding data structure of the foreign
--   language and vice versa. To code this marshalling in Haskell, it is
--   necessary to manipulate primitive data types stored in unstructured
--   memory blocks. The class <a>Storable</a> facilitates this manipulation
--   on all types for which it is instantiated, which are the standard
--   basic types of Haskell, the fixed size <tt>Int</tt> types
--   (<a>Int8</a>, <a>Int16</a>, <a>Int32</a>, <a>Int64</a>), the fixed
--   size <tt>Word</tt> types (<a>Word8</a>, <a>Word16</a>, <a>Word32</a>,
--   <a>Word64</a>), <a>StablePtr</a>, all types from
--   <a>Foreign.C.Types</a>, as well as <a>Ptr</a>.
class () => Storable a

-- | a value of type <tt>STRef s a</tt> is a mutable variable in state
--   thread <tt>s</tt>, containing a value of type <tt>a</tt>
--   
--   <pre>
--   &gt;&gt;&gt; :{
--   runST (do
--       ref &lt;- newSTRef "hello"
--       x &lt;- readSTRef ref
--       writeSTRef ref (x ++ "world")
--       readSTRef ref )
--   :}
--   "helloworld"
--   </pre>
data () => STRef s a

-- | Monads in which <a>IO</a> computations may be embedded. Any monad
--   built by applying a sequence of monad transformers to the <a>IO</a>
--   monad will be an instance of this class.
--   
--   Instances should satisfy the following laws, which state that
--   <a>liftIO</a> is a transformer of monads:
--   
--   <ul>
--   <li><pre><a>liftIO</a> . <a>return</a> = <a>return</a></pre></li>
--   <li><pre><a>liftIO</a> (m &gt;&gt;= f) = <a>liftIO</a> m &gt;&gt;=
--   (<a>liftIO</a> . f)</pre></li>
--   </ul>
class Monad m => MonadIO (m :: Type -> Type)

-- | Lift a computation from the <a>IO</a> monad. This allows us to run IO
--   computations in any monadic stack, so long as it supports these kinds
--   of operations (i.e. <a>IO</a> is the base monad for the stack).
--   
--   <h3><b>Example</b></h3>
--   
--   <pre>
--   import Control.Monad.Trans.State -- from the "transformers" library
--   
--   printState :: Show s =&gt; StateT s IO ()
--   printState = do
--     state &lt;- get
--     liftIO $ print state
--   </pre>
--   
--   Had we omitted <tt><a>liftIO</a></tt>, we would have ended up with
--   this error:
--   
--   <pre>
--   • Couldn't match type ‘IO’ with ‘StateT s IO’
--    Expected type: StateT s IO ()
--      Actual type: IO ()
--   </pre>
--   
--   The important part here is the mismatch between <tt>StateT s IO
--   ()</tt> and <tt><a>IO</a> ()</tt>.
--   
--   Luckily, we know of a function that takes an <tt><a>IO</a> a</tt> and
--   returns an <tt>(m a)</tt>: <tt><a>liftIO</a></tt>, enabling us to run
--   the program and see the expected results:
--   
--   <pre>
--   &gt; evalStateT printState "hello"
--   "hello"
--   
--   &gt; evalStateT printState 3
--   3
--   </pre>
liftIO :: MonadIO m => IO a -> m a

-- | <a>Chan</a> is an abstract type representing an unbounded FIFO
--   channel.
data () => Chan a

-- | Shared memory locations that support atomic memory transactions.
data () => TVar a

-- | The <a>Down</a> type allows you to reverse sort order conveniently. A
--   value of type <tt><a>Down</a> a</tt> contains a value of type
--   <tt>a</tt> (represented as <tt><a>Down</a> a</tt>).
--   
--   If <tt>a</tt> has an <tt><a>Ord</a></tt> instance associated with it
--   then comparing two values thus wrapped will give you the opposite of
--   their normal sort order. This is particularly useful when sorting in
--   generalised list comprehensions, as in: <tt>then sortWith by
--   <a>Down</a> x</tt>.
--   
--   <pre>
--   &gt;&gt;&gt; compare True False
--   GT
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; compare (Down True) (Down False)
--   LT
--   </pre>
--   
--   If <tt>a</tt> has a <tt><a>Bounded</a></tt> instance then the wrapped
--   instance also respects the reversed ordering by exchanging the values
--   of <tt><a>minBound</a></tt> and <tt><a>maxBound</a></tt>.
--   
--   <pre>
--   &gt;&gt;&gt; minBound :: Int
--   -9223372036854775808
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; minBound :: Down Int
--   Down 9223372036854775807
--   </pre>
--   
--   All other instances of <tt><a>Down</a> a</tt> behave as they do for
--   <tt>a</tt>.
newtype () => Down a
Down :: a -> Down a

[getDown] :: Down a -> a

-- | A concrete, promotable proxy type, for use at the kind level. There
--   are no instances for this because it is intended at the kind level
--   only
data () => KProxy t
KProxy :: KProxy t

-- | See <a>openFile</a>
data () => IOMode
ReadMode :: IOMode
WriteMode :: IOMode
AppendMode :: IOMode
ReadWriteMode :: IOMode

-- | A mutable variable in the <a>IO</a> monad.
--   
--   <pre>
--   &gt;&gt;&gt; import Data.IORef
--   
--   &gt;&gt;&gt; r &lt;- newIORef 0
--   
--   &gt;&gt;&gt; readIORef r
--   0
--   
--   &gt;&gt;&gt; writeIORef r 1
--   
--   &gt;&gt;&gt; readIORef r
--   1
--   
--   &gt;&gt;&gt; atomicWriteIORef r 2
--   
--   &gt;&gt;&gt; readIORef r
--   2
--   
--   &gt;&gt;&gt; modifyIORef' r (+ 1)
--   
--   &gt;&gt;&gt; readIORef r
--   3
--   
--   &gt;&gt;&gt; atomicModifyIORef' r (\a -&gt; (a + 1, ()))
--   
--   &gt;&gt;&gt; readIORef r
--   4
--   </pre>
--   
--   See also <a>STRef</a> and <a>MVar</a>.
data () => IORef a

-- | A mode that determines the effect of <a>hSeek</a> <tt>hdl mode i</tt>.
data () => SeekMode

-- | the position of <tt>hdl</tt> is set to <tt>i</tt>.
AbsoluteSeek :: SeekMode

-- | the position of <tt>hdl</tt> is set to offset <tt>i</tt> from the
--   current position.
RelativeSeek :: SeekMode

-- | the position of <tt>hdl</tt> is set to offset <tt>i</tt> from the end
--   of the file.
SeekFromEnd :: SeekMode

-- | Three kinds of buffering are supported: line-buffering,
--   block-buffering or no-buffering. These modes have the following
--   effects. For output, items are written out, or <i>flushed</i>, from
--   the internal buffer according to the buffer mode:
--   
--   <ul>
--   <li><i>line-buffering</i>: the entire output buffer is flushed
--   whenever a newline is output, the buffer overflows, a <a>hFlush</a> is
--   issued, or the handle is closed.</li>
--   <li><i>block-buffering</i>: the entire buffer is written out whenever
--   it overflows, a <a>hFlush</a> is issued, or the handle is closed.</li>
--   <li><i>no-buffering</i>: output is written immediately, and never
--   stored in the buffer.</li>
--   </ul>
--   
--   An implementation is free to flush the buffer more frequently, but not
--   less frequently, than specified above. The output buffer is emptied as
--   soon as it has been written out.
--   
--   Similarly, input occurs according to the buffer mode for the handle:
--   
--   <ul>
--   <li><i>line-buffering</i>: when the buffer for the handle is not
--   empty, the next item is obtained from the buffer; otherwise, when the
--   buffer is empty, characters up to and including the next newline
--   character are read into the buffer. No characters are available until
--   the newline character is available or the buffer is full.</li>
--   <li><i>block-buffering</i>: when the buffer for the handle becomes
--   empty, the next block of data is read into the buffer.</li>
--   <li><i>no-buffering</i>: the next input item is read and returned. The
--   <a>hLookAhead</a> operation implies that even a no-buffered handle may
--   require a one-character buffer.</li>
--   </ul>
--   
--   The default buffering mode when a handle is opened is
--   implementation-dependent and may depend on the file system object
--   which is attached to that handle. For most implementations, physical
--   files will normally be block-buffered and terminals will normally be
--   line-buffered.
data () => BufferMode

-- | buffering is disabled if possible.
NoBuffering :: BufferMode

-- | line-buffering should be enabled if possible.
LineBuffering :: BufferMode

-- | block-buffering should be enabled if possible. The size of the buffer
--   is <tt>n</tt> items if the argument is <a>Just</a> <tt>n</tt> and is
--   otherwise implementation-dependent.
BlockBuffering :: Maybe Int -> BufferMode

-- | An abstract type that contains a value for each variant of
--   <a>IOException</a>.
data () => IOErrorType

-- | Superclass for asynchronous exceptions.
data () => SomeAsyncException
SomeAsyncException :: e -> SomeAsyncException

-- | Generalized version of <a>Handler</a>
data () => Handler (m :: Type -> Type) a
Handler :: (e -> m a) -> Handler (m :: Type -> Type) a

-- | <a>QSemN</a> is a quantity semaphore in which the resource is acquired
--   and released in units of one. It provides guaranteed FIFO ordering for
--   satisfying blocked <a>waitQSemN</a> calls.
--   
--   The pattern
--   
--   <pre>
--   bracket_ (waitQSemN n) (signalQSemN n) (...)
--   </pre>
--   
--   is safe; it never loses any of the resource.
data () => QSemN

-- | <a>QSem</a> is a quantity semaphore in which the resource is acquired
--   and released in units of one. It provides guaranteed FIFO ordering for
--   satisfying blocked <a>waitQSem</a> calls.
--   
--   The pattern
--   
--   <pre>
--   bracket_ waitQSem signalQSem (...)
--   </pre>
--   
--   is safe; it never loses a unit of the resource.
data () => QSem

-- | Provide a Semigroup for an arbitrary Monoid.
--   
--   <b>NOTE</b>: This is not needed anymore since <a>Semigroup</a> became
--   a superclass of <a>Monoid</a> in <i>base-4.11</i> and this newtype be
--   deprecated at some point in the future.
data () => WrappedMonoid m
data () => Deque (v :: Type -> Type -> Type) s a
data () => Conc (m :: Type -> Type) a

-- | General-purpose finite sequences.
data () => Seq a

-- | A set of integers.
data () => IntSet

-- | A map of integers to values <tt>a</tt>.
data () => IntMap a

-- | A set of values. A set cannot contain duplicate values.
data () => HashSet a
data () => Vector a
class (Vector Vector a, MVector MVector a) => Unbox a
type SVector = Vector
type UVector = Vector
type LByteString = ByteString
type LText = Text

-- | The Modified Julian Day is a standard count of days, with zero being
--   the day 1858-11-17.
newtype () => Day
ModifiedJulianDay :: Integer -> Day
[toModifiedJulianDay] :: Day -> Integer
newtype () => Concurrently (m :: Type -> Type) a
Concurrently :: m a -> Concurrently (m :: Type -> Type) a
[runConcurrently] :: Concurrently (m :: Type -> Type) a -> m a

-- | <a>TBQueue</a> is an abstract type representing a bounded FIFO
--   channel.
data () => TBQueue a

-- | <a>TChan</a> is an abstract type representing an unbounded FIFO
--   channel.
data () => TChan a

-- | A <a>TMVar</a> is a synchronising variable, used for communication
--   between concurrent threads. It can be thought of as a box, which may
--   be empty or full.
data () => TMVar a

-- | <a>TQueue</a> is an abstract type representing an unbounded FIFO
--   channel.
data () => TQueue a
data () => AsyncExceptionWrapper
AsyncExceptionWrapper :: e -> AsyncExceptionWrapper
data () => SyncExceptionWrapper
SyncExceptionWrapper :: e -> SyncExceptionWrapper
data () => StringException
StringException :: String -> CallStack -> StringException
data () => ConcException
EmptyWithNoAlternative :: ConcException
data () => Memoized a
class MonadIO m => MonadUnliftIO (m :: Type -> Type)
withRunInIO :: MonadUnliftIO m => ((forall a. () => m a -> IO a) -> IO b) -> m b
class Monad m => PrimMonad (m :: Type -> Type) where {
    type family PrimState (m :: Type -> Type);
}
type family PrimState (m :: Type -> Type)
data () => MutVar s a
MutVar :: MutVar# s a -> MutVar s a
class () => Prim a
type MutableDeque c = (MutableQueue c, MutablePushFront c, MutablePopBack c)
type MutableStack c = (MutablePopFront c, MutablePushFront c)
type MutableQueue c = (MutablePopFront c, MutablePushBack c)
class MutableCollection c => MutablePushBack c
pushBack :: (MutablePushBack c, PrimMonad m, PrimState m ~ MCState c) => c -> CollElement c -> m ()
class MutableCollection c => MutablePopBack c
popBack :: (MutablePopBack c, PrimMonad m, PrimState m ~ MCState c) => c -> m (Maybe (CollElement c))
class MutableCollection c => MutablePushFront c
pushFront :: (MutablePushFront c, PrimMonad m, PrimState m ~ MCState c) => c -> CollElement c -> m ()
class MutableCollection c => MutablePopFront c
popFront :: (MutablePopFront c, PrimMonad m, PrimState m ~ MCState c) => c -> m (Maybe (CollElement c))
class MutableContainer c => MutableCollection c where {
    type family CollElement c;
}
newColl :: (MutableCollection c, PrimMonad m, PrimState m ~ MCState c) => m c
type family CollElement c
class MutableRef c => MutableAtomicRef c
atomicModifyRef :: (MutableAtomicRef c, PrimMonad m, PrimState m ~ MCState c) => c -> (RefElement c -> (RefElement c, a)) -> m a
atomicModifyRef' :: (MutableAtomicRef c, PrimMonad m, PrimState m ~ MCState c) => c -> (RefElement c -> (RefElement c, a)) -> m a
class MutableContainer c => MutableRef c where {
    type family RefElement c;
}
newRef :: (MutableRef c, PrimMonad m, PrimState m ~ MCState c) => RefElement c -> m c
readRef :: (MutableRef c, PrimMonad m, PrimState m ~ MCState c) => c -> m (RefElement c)
writeRef :: (MutableRef c, PrimMonad m, PrimState m ~ MCState c) => c -> RefElement c -> m ()
modifyRef :: (MutableRef c, PrimMonad m, PrimState m ~ MCState c) => c -> (RefElement c -> RefElement c) -> m ()
modifyRef' :: (MutableRef c, PrimMonad m, PrimState m ~ MCState c) => c -> (RefElement c -> RefElement c) -> m ()
type family RefElement c
class () => MutableContainer c where {
    type family MCState c;
}
type family MCState c
type IOBRef = BRef PrimState IO
data () => BRef s a
data () => DLList s a
type BDeque = Deque MVector
type SDeque = Deque MVector
type UDeque = Deque MVector
type IOPRef = PRef PrimState IO
data () => PRef s a
type IOSRef = SRef PrimState IO
data () => SRef s a
type IOURef = URef PrimState IO
data () => URef s a
data () => TBChan a
data () => TBMChan a
data () => TBMQueue a
data () => TMChan a
data () => TMQueue a

-- | Provides a <a>Foldable</a> for an arbitrary <a>MonoFoldable</a>.
data () => WrappedMono mono a
[WrappedMono] :: forall mono a. Element mono ~ a => mono -> WrappedMono mono a

-- | Provides a <a>MonoFoldable</a>, <a>MonoFunctor</a> or
--   <a>MonoPointed</a> for an arbitrary <a>Foldable</a>, <a>Functor</a> or
--   <a>Applicative</a>.
--   
--   Useful for, e.g., passing a <a>Foldable</a> type you don't own into a
--   function that expects a <a>MonoFoldable</a>.
--   
--   <pre>
--   // package A
--   data MyList a = MyList [a] deriving Foldable
--   
--   // package B
--   process :: MonoFoldable mono =&gt; mono -&gt; IO ()
--   
--   // package C
--   process (WrappedPoly (MyList []))
--   </pre>
newtype () => WrappedPoly (f :: Type -> Type) a
WrappedPoly :: f a -> WrappedPoly (f :: Type -> Type) a
[unwrapPoly] :: WrappedPoly (f :: Type -> Type) a -> f a

-- | Containers which, when two values are combined, the combined length is
--   no less than the larger of the two inputs. In code:
--   
--   <pre>
--   olength (x &lt;&gt; y) &gt;= max (olength x) (olength y)
--   </pre>
--   
--   This class has no methods, and is simply used to assert that this law
--   holds, in order to provide guarantees of correctness (see, for
--   instance, <a>Data.NonNull</a>).
--   
--   This should have a <tt>Semigroup</tt> superclass constraint, however,
--   due to <tt>Semigroup</tt> only recently moving to base, some packages
--   do not provide instances.
class MonoFoldable mono => GrowingAppend mono

-- | Typeclass for monomorphic containers where it is always okay to
--   "extract" a value from with <a>oextract</a>, and where you can
--   extrapolate any "extracting" function to be a function on the whole
--   part with <a>oextend</a>.
--   
--   <a>oextend</a> and <a>oextract</a> should work together following the
--   laws:
--   
--   <pre>
--   <a>oextend</a> <a>oextract</a>      = <a>id</a>
--   <a>oextract</a> . <a>oextend</a> f  = f
--   <a>oextend</a> f . <a>oextend</a> g = <a>oextend</a> (f . <a>oextend</a> g)
--   </pre>
--   
--   As an intuition, <tt><a>oextend</a> f</tt> uses <tt>f</tt> to "build
--   up" a new <tt>mono</tt> with pieces from the old one received by
--   <tt>f</tt>.
class MonoFunctor mono => MonoComonad mono

-- | Extract an element from <tt>mono</tt>. Can be thought of as a dual
--   concept to <tt>opoint</tt>.
oextract :: MonoComonad mono => mono -> Element mono

-- | <a>Extend</a> a <tt>mono -&gt; <a>Element</a> mono</tt> function to be
--   a <tt>mono -&gt; mono</tt>; that is, builds a new <tt>mono</tt> from
--   the old one by using pieces glimpsed from the given function.
oextend :: MonoComonad mono => (mono -> Element mono) -> mono -> mono

-- | Typeclass for monomorphic containers that an element can be lifted
--   into.
--   
--   For any <a>MonoFunctor</a>, the following law holds:
--   
--   <pre>
--   <a>omap</a> f . <a>opoint</a> = <a>opoint</a> . f
--   </pre>
class () => MonoPointed mono

-- | Lift an element into a monomorphic container.
--   
--   <a>opoint</a> is the same as <a>pure</a> for an <a>Applicative</a>
opoint :: MonoPointed mono => Element mono -> mono

-- | Monomorphic containers that can be traversed from left to right.
--   
--   NOTE: Due to limitations with the role system, GHC is yet unable to
--   provide newtype-derivation of <a>MonoTraversable</a>. See
--   <a>https://stackoverflow.com/questions/49776924/newtype-deriving-issequence</a>.
class (MonoFunctor mono, MonoFoldable mono) => MonoTraversable mono

-- | Map each element of a monomorphic container to an action, evaluate
--   these actions from left to right, and collect the results.
otraverse :: (MonoTraversable mono, Applicative f) => (Element mono -> f (Element mono)) -> mono -> f mono

-- | Map each element of a monomorphic container to a monadic action,
--   evaluate these actions from left to right, and collect the results.
omapM :: (MonoTraversable mono, Applicative m) => (Element mono -> m (Element mono)) -> mono -> m mono

-- | Monomorphic containers that can be folded.
class () => MonoFoldable mono

-- | Map each element of a monomorphic container to a <a>Monoid</a> and
--   combine the results.
ofoldMap :: (MonoFoldable mono, Monoid m) => (Element mono -> m) -> mono -> m

-- | Right-associative fold of a monomorphic container.
ofoldr :: MonoFoldable mono => (Element mono -> b -> b) -> b -> mono -> b

-- | Strict left-associative fold of a monomorphic container.
ofoldl' :: MonoFoldable mono => (a -> Element mono -> a) -> a -> mono -> a

-- | Convert a monomorphic container to a list.
otoList :: MonoFoldable mono => mono -> [Element mono]

-- | Are <b>all</b> of the elements in a monomorphic container converted to
--   booleans <a>True</a>?
oall :: MonoFoldable mono => (Element mono -> Bool) -> mono -> Bool

-- | Are <b>any</b> of the elements in a monomorphic container converted to
--   booleans <a>True</a>?
oany :: MonoFoldable mono => (Element mono -> Bool) -> mono -> Bool

-- | Is the monomorphic container empty?
onull :: MonoFoldable mono => mono -> Bool

-- | Length of a monomorphic container, returns a <a>Int</a>.
olength :: MonoFoldable mono => mono -> Int

-- | Length of a monomorphic container, returns a <a>Int64</a>.
olength64 :: MonoFoldable mono => mono -> Int64

-- | Compare the length of a monomorphic container and a given number.
ocompareLength :: (MonoFoldable mono, Integral i) => mono -> i -> Ordering

-- | Map each element of a monomorphic container to an action, evaluate
--   these actions from left to right, and ignore the results.
otraverse_ :: (MonoFoldable mono, Applicative f) => (Element mono -> f b) -> mono -> f ()

-- | <a>ofor_</a> is <a>otraverse_</a> with its arguments flipped.
ofor_ :: (MonoFoldable mono, Applicative f) => mono -> (Element mono -> f b) -> f ()

-- | Map each element of a monomorphic container to a monadic action,
--   evaluate these actions from left to right, and ignore the results.
omapM_ :: (MonoFoldable mono, Applicative m) => (Element mono -> m ()) -> mono -> m ()

-- | <a>oforM_</a> is <a>omapM_</a> with its arguments flipped.
oforM_ :: (MonoFoldable mono, Applicative m) => mono -> (Element mono -> m ()) -> m ()

-- | Monadic fold over the elements of a monomorphic container, associating
--   to the left.
ofoldlM :: (MonoFoldable mono, Monad m) => (a -> Element mono -> m a) -> a -> mono -> m a

-- | Map each element of a monomorphic container to a semigroup, and
--   combine the results.
--   
--   Note: this is a partial function. On an empty <a>MonoFoldable</a>, it
--   will throw an exception.
--   
--   <i>See <a>ofoldMap1</a> from <a>Data.NonNull</a> for a total version
--   of this function.</i>
ofoldMap1Ex :: (MonoFoldable mono, Semigroup m) => (Element mono -> m) -> mono -> m

-- | Right-associative fold of a monomorphic container with no base
--   element.
--   
--   Note: this is a partial function. On an empty <a>MonoFoldable</a>, it
--   will throw an exception.
--   
--   <i>See <a>ofoldr1</a> from <a>Data.NonNull</a> for a total version of
--   this function.</i>
ofoldr1Ex :: MonoFoldable mono => (Element mono -> Element mono -> Element mono) -> mono -> Element mono

-- | Strict left-associative fold of a monomorphic container with no base
--   element.
--   
--   Note: this is a partial function. On an empty <a>MonoFoldable</a>, it
--   will throw an exception.
--   
--   <i>See <a>ofoldl1'</a> from <a>Data.NonNull</a> for a total version of
--   this function.</i>
ofoldl1Ex' :: MonoFoldable mono => (Element mono -> Element mono -> Element mono) -> mono -> Element mono

-- | Get the first element of a monomorphic container.
--   
--   Note: this is a partial function. On an empty <a>MonoFoldable</a>, it
--   will throw an exception.
--   
--   <i>See <a>head</a> from <a>Data.NonNull</a> for a total version of
--   this function.</i>
headEx :: MonoFoldable mono => mono -> Element mono

-- | Get the last element of a monomorphic container.
--   
--   Note: this is a partial function. On an empty <a>MonoFoldable</a>, it
--   will throw an exception.
--   
--   <i>See <a>last</a> from <a>Data.NonNull</a> for a total version of
--   this function.</i>
lastEx :: MonoFoldable mono => mono -> Element mono

-- | Equivalent to <a>headEx</a>.
unsafeHead :: MonoFoldable mono => mono -> Element mono

-- | Equivalent to <a>lastEx</a>.
unsafeLast :: MonoFoldable mono => mono -> Element mono

-- | Get the maximum element of a monomorphic container, using a supplied
--   element ordering function.
--   
--   Note: this is a partial function. On an empty <a>MonoFoldable</a>, it
--   will throw an exception.
--   
--   <i>See <a>maximumBy</a> from <a>Data.NonNull</a> for a total version
--   of this function.</i>
maximumByEx :: MonoFoldable mono => (Element mono -> Element mono -> Ordering) -> mono -> Element mono

-- | Get the minimum element of a monomorphic container, using a supplied
--   element ordering function.
--   
--   Note: this is a partial function. On an empty <a>MonoFoldable</a>, it
--   will throw an exception.
--   
--   <i>See <a>minimumBy</a> from <a>Data.NonNull</a> for a total version
--   of this function.</i>
minimumByEx :: MonoFoldable mono => (Element mono -> Element mono -> Ordering) -> mono -> Element mono

-- | Checks if the monomorphic container includes the supplied element.
oelem :: MonoFoldable mono => Element mono -> mono -> Bool

-- | Checks if the monomorphic container does not include the supplied
--   element.
onotElem :: MonoFoldable mono => Element mono -> mono -> Bool

-- | Monomorphic containers that can be mapped over.
class () => MonoFunctor mono

-- | Map over a monomorphic container
omap :: MonoFunctor mono => (Element mono -> Element mono) -> mono -> mono

-- | Type family for getting the type of the elements of a monomorphic
--   container.
type family Element mono

-- | Textual data which can be encoded to and decoded from UTF8.
class (Textual textual, IsSequence binary) => Utf8 textual binary | textual -> binary, binary -> textual

-- | Encode from textual to binary using UTF-8 encoding
encodeUtf8 :: Utf8 textual binary => textual -> binary

-- | Note that this function is required to be pure. In the case of a
--   decoding error, Unicode replacement characters must be used.
decodeUtf8 :: Utf8 textual binary => binary -> textual

-- | Lazy sequences containing strict chunks of data.
class (IsSequence lazy, IsSequence strict) => LazySequence lazy strict | lazy -> strict, strict -> lazy
toChunks :: LazySequence lazy strict => lazy -> [strict]
fromChunks :: LazySequence lazy strict => [strict] -> lazy
toStrict :: LazySequence lazy strict => lazy -> strict
fromStrict :: LazySequence lazy strict => strict -> lazy

-- | A typeclass for sequences whose elements are <a>Char</a>s.
class (IsSequence t, IsString t, Element t ~ Char) => Textual t

-- | Break up a textual sequence into a list of words, which were delimited
--   by white space.
--   
--   <pre>
--   &gt; <a>words</a> "abc  def ghi"
--   ["abc","def","ghi"]
--   </pre>
words :: Textual t => t -> [t]

-- | Join a list of textual sequences using separating spaces.
--   
--   <pre>
--   &gt; <a>unwords</a> ["abc","def","ghi"]
--   "abc def ghi"
--   </pre>
unwords :: (Textual t, Element seq ~ t, MonoFoldable seq) => seq -> t

-- | Break up a textual sequence at newline characters.
--   
--   <pre>
--   &gt; <a>lines</a> "hello\nworld"
--   ["hello","world"]
--   </pre>
lines :: Textual t => t -> [t]

-- | Join a list of textual sequences using newlines.
--   
--   <pre>
--   &gt; <a>unlines</a> ["abc","def","ghi"]
--   "abc\ndef\nghi"
--   </pre>
unlines :: (Textual t, Element seq ~ t, MonoFoldable seq) => seq -> t

-- | Convert a textual sequence to lower-case.
--   
--   <pre>
--   &gt; <a>toLower</a> "HELLO WORLD"
--   "hello world"
--   </pre>
toLower :: Textual t => t -> t

-- | Convert a textual sequence to upper-case.
--   
--   <pre>
--   &gt; <a>toUpper</a> "hello world"
--   "HELLO WORLD"
--   </pre>
toUpper :: Textual t => t -> t

-- | Convert a textual sequence to folded-case.
--   
--   Slightly different from <a>toLower</a>, see
--   <tt><a>Data.Text</a>.<a>toCaseFold</a></tt>
toCaseFold :: Textual t => t -> t

-- | Split a textual sequence into two parts, split at the first space.
--   
--   <pre>
--   &gt; <a>breakWord</a> "hello world"
--   ("hello","world")
--   </pre>
breakWord :: Textual t => t -> (t, t)

-- | Split a textual sequence into two parts, split at the newline.
--   
--   <pre>
--   &gt; <a>breakLine</a> "abc\ndef"
--   ("abc","def")
--   </pre>
breakLine :: Textual t => t -> (t, t)

-- | Sequence Laws:
--   
--   <pre>
--   <a>fromList</a> . <a>otoList</a> = <a>id</a>
--   <a>fromList</a> (x &lt;&gt; y) = <a>fromList</a> x &lt;&gt; <a>fromList</a> y
--   <a>otoList</a> (<a>fromList</a> x &lt;&gt; <a>fromList</a> y) = x &lt;&gt; y
--   </pre>
class (Monoid seq, MonoTraversable seq, SemiSequence seq, MonoPointed seq) => IsSequence seq

-- | Convert a list to a sequence.
--   
--   <pre>
--   &gt; <a>fromList</a> [<tt>a</tt>, <tt>b</tt>, <tt>c</tt>] :: Text
--   "abc"
--   </pre>
fromList :: IsSequence seq => [Element seq] -> seq

-- | <a>lengthIndex</a> returns the length of a sequence as
--   <tt><a>Index</a> seq</tt>.
lengthIndex :: IsSequence seq => seq -> Index seq

-- | <a>break</a> applies a predicate to a sequence, and returns a tuple
--   where the first element is the longest prefix (possibly empty) of
--   elements that <i>do not satisfy</i> the predicate. The second element
--   of the tuple is the remainder of the sequence.
--   
--   <tt><a>break</a> p</tt> is equivalent to <tt><a>span</a> (<tt>not</tt>
--   . p)</tt>
--   
--   <pre>
--   &gt; <a>break</a> (&gt; 3) (<a>fromList</a> [1,2,3,4,1,2,3,4] :: <tt>Vector</tt> <a>Int</a>)
--   (fromList [1,2,3],fromList [4,1,2,3,4])
--   
--   &gt; <a>break</a> (&lt; <tt>z</tt>) (<a>fromList</a> "abc" :: <tt>Text</tt>)
--   ("","abc")
--   
--   &gt; <a>break</a> (&gt; <tt>z</tt>) (<a>fromList</a> "abc" :: <tt>Text</tt>)
--   ("abc","")
--   </pre>
break :: IsSequence seq => (Element seq -> Bool) -> seq -> (seq, seq)

-- | <a>span</a> applies a predicate to a sequence, and returns a tuple
--   where the first element is the longest prefix (possibly empty) that
--   <i>does satisfy</i> the predicate. The second element of the tuple is
--   the remainder of the sequence.
--   
--   <tt><a>span</a> p xs</tt> is equivalent to <tt>(<a>takeWhile</a> p xs,
--   <a>dropWhile</a> p xs)</tt>
--   
--   <pre>
--   &gt; <a>span</a> (&lt; 3) (<a>fromList</a> [1,2,3,4,1,2,3,4] :: <tt>Vector</tt> <a>Int</a>)
--   (fromList [1,2],fromList [3,4,1,2,3,4])
--   
--   &gt; <a>span</a> (&lt; <tt>z</tt>) (<a>fromList</a> "abc" :: <tt>Text</tt>)
--   ("abc","")
--   
--   &gt; <a>span</a> (&lt; 0) <a>1,2,3</a>
--   </pre>
span :: IsSequence seq => (Element seq -> Bool) -> seq -> (seq, seq)

-- | <a>dropWhile</a> returns the suffix remaining after <a>takeWhile</a>.
--   
--   <pre>
--   &gt; <a>dropWhile</a> (&lt; 3) [1,2,3,4,5,1,2,3]
--   [3,4,5,1,2,3]
--   
--   &gt; <a>dropWhile</a> (&lt; <tt>z</tt>) (<a>fromList</a> "abc" :: <tt>Text</tt>)
--   ""
--   </pre>
dropWhile :: IsSequence seq => (Element seq -> Bool) -> seq -> seq

-- | <a>takeWhile</a> applies a predicate to a sequence, and returns the
--   longest prefix (possibly empty) of the sequence of elements that
--   <i>satisfy</i> the predicate.
--   
--   <pre>
--   &gt; <a>takeWhile</a> (&lt; 3) [1,2,3,4,5,1,2,3]
--   [1,2]
--   
--   &gt; <a>takeWhile</a> (&lt; <tt>z</tt>) (<a>fromList</a> "abc" :: <tt>Text</tt>)
--   "abc"
--   </pre>
takeWhile :: IsSequence seq => (Element seq -> Bool) -> seq -> seq

-- | <tt><a>splitAt</a> n se</tt> returns a tuple where the first element
--   is the prefix of the sequence <tt>se</tt> with length <tt>n</tt>, and
--   the second element is the remainder of the sequence.
--   
--   <pre>
--   &gt; <a>splitAt</a> 6 "Hello world!"
--   ("Hello ","world!")
--   
--   &gt; <a>splitAt</a> 3 (<a>fromList</a> [1,2,3,4,5] :: <tt>Vector</tt> <a>Int</a>)
--   (fromList [1,2,3],fromList [4,5])
--   </pre>
splitAt :: IsSequence seq => Index seq -> seq -> (seq, seq)

-- | Equivalent to <a>splitAt</a>.
unsafeSplitAt :: IsSequence seq => Index seq -> seq -> (seq, seq)

-- | <tt><a>take</a> n</tt> returns the prefix of a sequence of length
--   <tt>n</tt>, or the sequence itself if <tt>n &gt; <a>olength</a>
--   seq</tt>.
--   
--   <pre>
--   &gt; <a>take</a> 3 "abcdefg"
--   "abc"
--   &gt; <a>take</a> 4 (<a>fromList</a> [1,2,3,4,5,6] :: <tt>Vector</tt> <a>Int</a>)
--   fromList [1,2,3,4]
--   </pre>
take :: IsSequence seq => Index seq -> seq -> seq

-- | Equivalent to <a>take</a>.
unsafeTake :: IsSequence seq => Index seq -> seq -> seq

-- | <tt><a>drop</a> n</tt> returns the suffix of a sequence after the
--   first <tt>n</tt> elements, or an empty sequence if <tt>n &gt;
--   <a>olength</a> seq</tt>.
--   
--   <pre>
--   &gt; <a>drop</a> 3 "abcdefg"
--   "defg"
--   &gt; <a>drop</a> 4 (<a>fromList</a> [1,2,3,4,5,6] :: <tt>Vector</tt> <a>Int</a>)
--   fromList [5,6]
--   </pre>
drop :: IsSequence seq => Index seq -> seq -> seq

-- | Equivalent to <a>drop</a>
unsafeDrop :: IsSequence seq => Index seq -> seq -> seq

-- | Same as <a>drop</a> but drops from the end of the sequence instead.
--   
--   <pre>
--   &gt; <a>dropEnd</a> 3 "abcdefg"
--   "abcd"
--   &gt; <a>dropEnd</a> 4 (<a>fromList</a> [1,2,3,4,5,6] :: <tt>Vector</tt> <a>Int</a>)
--   fromList [1,2]
--   </pre>
dropEnd :: IsSequence seq => Index seq -> seq -> seq

-- | <a>partition</a> takes a predicate and a sequence and returns the pair
--   of sequences of elements which do and do not satisfy the predicate.
--   
--   <pre>
--   <a>partition</a> p se = (<a>filter</a> p se, <a>filter</a> (<tt>not</tt> . p) se)
--   </pre>
partition :: IsSequence seq => (Element seq -> Bool) -> seq -> (seq, seq)

-- | <a>uncons</a> returns the tuple of the first element of a sequence and
--   the rest of the sequence, or <a>Nothing</a> if the sequence is empty.
--   
--   <pre>
--   &gt; <a>uncons</a> (<a>fromList</a> [1,2,3,4] :: <tt>Vector</tt> <a>Int</a>)
--   <a>Just</a> (1,fromList [2,3,4])
--   
--   &gt; <a>uncons</a> ([] :: [<a>Int</a>])
--   <a>Nothing</a>
--   </pre>
uncons :: IsSequence seq => seq -> Maybe (Element seq, seq)

-- | <a>unsnoc</a> returns the tuple of the init of a sequence and the last
--   element, or <a>Nothing</a> if the sequence is empty.
--   
--   <pre>
--   &gt; <a>unsnoc</a> (<a>fromList</a> [1,2,3,4] :: <tt>Vector</tt> <a>Int</a>)
--   <a>Just</a> (fromList [1,2,3],4)
--   
--   &gt; <a>unsnoc</a> ([] :: [<a>Int</a>])
--   <a>Nothing</a>
--   </pre>
unsnoc :: IsSequence seq => seq -> Maybe (seq, Element seq)

-- | <a>filter</a> given a predicate returns a sequence of all elements
--   that satisfy the predicate.
--   
--   <pre>
--   &gt; <a>filter</a> (&lt; 5) [1 .. 10]
--   [1,2,3,4]
--   </pre>
filter :: IsSequence seq => (Element seq -> Bool) -> seq -> seq

-- | The monadic version of <a>filter</a>.
filterM :: (IsSequence seq, Monad m) => (Element seq -> m Bool) -> seq -> m seq

-- | <tt><a>replicate</a> n x</tt> is a sequence of length <tt>n</tt> with
--   <tt>x</tt> as the value of every element.
--   
--   <pre>
--   &gt; <a>replicate</a> 10 <tt>a</tt> :: Text
--   "aaaaaaaaaa"
--   </pre>
replicate :: IsSequence seq => Index seq -> Element seq -> seq

-- | The monadic version of <a>replicateM</a>.
replicateM :: (IsSequence seq, Monad m) => Index seq -> m (Element seq) -> m seq

-- | <a>group</a> takes a sequence and returns a list of sequences such
--   that the concatenation of the result is equal to the argument. Each
--   subsequence in the result contains only equal elements, using the
--   supplied equality test.
--   
--   <pre>
--   &gt; <a>groupBy</a> (==) <a>Mississippi</a>
--   [<a>M</a>,"i","ss","i","ss","i","pp","i"]
--   </pre>
groupBy :: IsSequence seq => (Element seq -> Element seq -> Bool) -> seq -> [seq]

-- | Similar to standard <a>groupBy</a>, but operates on the whole
--   collection, not just the consecutive items.
groupAllOn :: (IsSequence seq, Eq b) => (Element seq -> b) -> seq -> [seq]

-- | <a>subsequences</a> returns a list of all subsequences of the
--   argument.
--   
--   <pre>
--   &gt; <a>subsequences</a> "abc"
--   ["","a","b","ab","c","ac","bc","abc"]
--   </pre>
subsequences :: IsSequence seq => seq -> [seq]

-- | <a>permutations</a> returns a list of all permutations of the
--   argument.
--   
--   <pre>
--   &gt; <a>permutations</a> "abc"
--   ["abc","bac","cba","bca","cab","acb"]
--   </pre>
permutations :: IsSequence seq => seq -> [seq]

-- | <b>Unsafe</b>
--   
--   Get the tail of a sequence, throw an exception if the sequence is
--   empty.
--   
--   <pre>
--   &gt; <a>tailEx</a> [1,2,3]
--   [2,3]
--   </pre>
tailEx :: IsSequence seq => seq -> seq

-- | Safe version of <a>tailEx</a>.
--   
--   Returns <a>Nothing</a> instead of throwing an exception when
--   encountering an empty monomorphic container.
tailMay :: IsSequence seq => seq -> Maybe seq

-- | <b>Unsafe</b>
--   
--   Get the init of a sequence, throw an exception if the sequence is
--   empty.
--   
--   <pre>
--   &gt; <a>initEx</a> [1,2,3]
--   [1,2]
--   </pre>
initEx :: IsSequence seq => seq -> seq

-- | Safe version of <a>initEx</a>.
--   
--   Returns <a>Nothing</a> instead of throwing an exception when
--   encountering an empty monomorphic container.
initMay :: IsSequence seq => seq -> Maybe seq

-- | Equivalent to <a>tailEx</a>.
unsafeTail :: IsSequence seq => seq -> seq

-- | Equivalent to <a>initEx</a>.
unsafeInit :: IsSequence seq => seq -> seq

-- | Get the element of a sequence at a certain index, returns
--   <a>Nothing</a> if that index does not exist.
--   
--   <pre>
--   &gt; <a>index</a> (<a>fromList</a> [1,2,3] :: <tt>Vector</tt> <a>Int</a>) 1
--   <a>Just</a> 2
--   &gt; <a>index</a> (<a>fromList</a> [1,2,3] :: <tt>Vector</tt> <a>Int</a>) 4
--   <a>Nothing</a>
--   </pre>
index :: IsSequence seq => seq -> Index seq -> Maybe (Element seq)

-- | <b>Unsafe</b>
--   
--   Get the element of a sequence at a certain index, throws an exception
--   if the index does not exist.
indexEx :: IsSequence seq => seq -> Index seq -> Element seq

-- | Equivalent to <a>indexEx</a>.
unsafeIndex :: IsSequence seq => seq -> Index seq -> Element seq

-- | <a>splitWhen</a> splits a sequence into components delimited by
--   separators, where the predicate returns True for a separator element.
--   The resulting components do not contain the separators. Two adjacent
--   separators result in an empty component in the output. The number of
--   resulting components is greater by one than number of separators.
--   
--   Since 0.9.3
splitWhen :: IsSequence seq => (Element seq -> Bool) -> seq -> [seq]

-- | Returns all the final segments of <tt>seq</tt> with the longest first.
--   
--   <pre>
--   &gt; tails [1,2]
--   [[1,2],[2],[]]
--   &gt; tails []
--   [[]]
--   </pre>
tails :: IsSequence seq => seq -> [seq]

-- | Return all the initial segments of <tt>seq</tt> with the shortest
--   first.
--   
--   <pre>
--   &gt; inits [1,2]
--   [[],[1],[1,2]]
--   &gt; inits []
--   [[]]
--   </pre>
inits :: IsSequence seq => seq -> [seq]

-- | Return all the pairs of inital and final segments of <tt>seq</tt>.
--   
--   <pre>
--   &gt; initTails [1,2]
--   [([],[1,2]),([1],[2]),([1,2],[])]
--   &gt; initTails []
--   [([],[])]
--   </pre>
initTails :: IsSequence seq => seq -> [(seq, seq)]

-- | Type class for maps whose keys can be converted into sets.
class SetContainer set => HasKeysSet set where {
    
    -- | Type of the key set.
    type family KeySet set;
}

-- | Convert a map into a set of its keys.
keysSet :: HasKeysSet set => set -> KeySet set

-- | Type of the key set.
type family KeySet set

-- | Zip operations on <a>MonoFunctor</a>s.
class MonoFunctor mono => MonoZip mono

-- | Combine each element of two <a>MonoZip</a>s using a supplied function.
ozipWith :: MonoZip mono => (Element mono -> Element mono -> Element mono) -> mono -> mono -> mono

-- | Take two <a>MonoZip</a>s and return a list of the pairs of their
--   elements.
ozip :: MonoZip mono => mono -> mono -> [(Element mono, Element mono)]

-- | Take a list of pairs of elements and return a <a>MonoZip</a> of the
--   first components and a <a>MonoZip</a> of the second components.
ounzip :: MonoZip mono => [(Element mono, Element mono)] -> (mono, mono)

-- | Polymorphic typeclass for interacting with different set types
class (SetContainer set, Element set ~ ContainerKey set) => IsSet set

-- | Insert a value into a set.
insertSet :: IsSet set => Element set -> set -> set

-- | Delete a value from a set.
deleteSet :: IsSet set => Element set -> set -> set

-- | Create a set from a single element.
singletonSet :: IsSet set => Element set -> set

-- | Convert a list to a set.
setFromList :: IsSet set => [Element set] -> set

-- | Convert a set to a list.
setToList :: IsSet set => set -> [Element set]

-- | Filter values in a set.
filterSet :: IsSet set => (Element set -> Bool) -> set -> set

-- | Polymorphic typeclass for interacting with different map types
class (MonoTraversable map, SetContainer map) => IsMap map where {
    
    -- | In some cases, <a>MapValue</a> and <a>Element</a> will be different,
    --   e.g., the <a>IsMap</a> instance of associated lists.
    type family MapValue map;
}

-- | Look up a value in a map with a specified key.
lookup :: IsMap map => ContainerKey map -> map -> Maybe (MapValue map)

-- | Insert a key-value pair into a map.
insertMap :: IsMap map => ContainerKey map -> MapValue map -> map -> map

-- | Delete a key-value pair of a map using a specified key.
deleteMap :: IsMap map => ContainerKey map -> map -> map

-- | Create a map from a single key-value pair.
singletonMap :: IsMap map => ContainerKey map -> MapValue map -> map

-- | Convert a list of key-value pairs to a map
mapFromList :: IsMap map => [(ContainerKey map, MapValue map)] -> map

-- | Convert a map to a list of key-value pairs.
mapToList :: IsMap map => map -> [(ContainerKey map, MapValue map)]

-- | Like <a>lookup</a>, but uses a default value when the key does not
--   exist in the map.
findWithDefault :: IsMap map => MapValue map -> ContainerKey map -> map -> MapValue map

-- | Insert a key-value pair into a map.
--   
--   Inserts the value directly if the key does not exist in the map.
--   Otherwise, apply a supplied function that accepts the new value and
--   the previous value and insert that result into the map.
insertWith :: IsMap map => (MapValue map -> MapValue map -> MapValue map) -> ContainerKey map -> MapValue map -> map -> map

-- | Insert a key-value pair into a map.
--   
--   Inserts the value directly if the key does not exist in the map.
--   Otherwise, apply a supplied function that accepts the key, the new
--   value, and the previous value and insert that result into the map.
insertWithKey :: IsMap map => (ContainerKey map -> MapValue map -> MapValue map -> MapValue map) -> ContainerKey map -> MapValue map -> map -> map

-- | Insert a key-value pair into a map, return the previous key's value if
--   it existed.
--   
--   Inserts the value directly if the key does not exist in the map.
--   Otherwise, apply a supplied function that accepts the key, the new
--   value, and the previous value and insert that result into the map.
insertLookupWithKey :: IsMap map => (ContainerKey map -> MapValue map -> MapValue map -> MapValue map) -> ContainerKey map -> MapValue map -> map -> (Maybe (MapValue map), map)

-- | Apply a function to the value of a given key.
--   
--   Returns the input map when the key-value pair does not exist.
adjustMap :: IsMap map => (MapValue map -> MapValue map) -> ContainerKey map -> map -> map

-- | Equivalent to <a>adjustMap</a>, but the function accepts the key, as
--   well as the previous value.
adjustWithKey :: IsMap map => (ContainerKey map -> MapValue map -> MapValue map) -> ContainerKey map -> map -> map

-- | Apply a function to the value of a given key.
--   
--   If the function returns <a>Nothing</a>, this deletes the key-value
--   pair.
--   
--   Returns the input map when the key-value pair does not exist.
updateMap :: IsMap map => (MapValue map -> Maybe (MapValue map)) -> ContainerKey map -> map -> map

-- | Equivalent to <a>updateMap</a>, but the function accepts the key, as
--   well as the previous value.
updateWithKey :: IsMap map => (ContainerKey map -> MapValue map -> Maybe (MapValue map)) -> ContainerKey map -> map -> map

-- | Apply a function to the value of a given key.
--   
--   If the map does not contain the key this returns <a>Nothing</a> and
--   the input map.
--   
--   If the map does contain the key but the function returns
--   <a>Nothing</a>, this returns the previous value and the map with the
--   key-value pair removed.
--   
--   If the map contains the key and the function returns a value, this
--   returns the new value and the map with the key-value pair with the new
--   value.
updateLookupWithKey :: IsMap map => (ContainerKey map -> MapValue map -> Maybe (MapValue map)) -> ContainerKey map -> map -> (Maybe (MapValue map), map)

-- | Update/Delete the value of a given key.
--   
--   Applies a function to previous value of a given key, if it results in
--   <a>Nothing</a> delete the key-value pair from the map, otherwise
--   replace the previous value with the new value.
alterMap :: IsMap map => (Maybe (MapValue map) -> Maybe (MapValue map)) -> ContainerKey map -> map -> map

-- | Combine two maps.
--   
--   When a key exists in both maps, apply a function to both of the values
--   and use the result of that as the value of the key in the resulting
--   map.
unionWith :: IsMap map => (MapValue map -> MapValue map -> MapValue map) -> map -> map -> map
unionWithKey :: IsMap map => (ContainerKey map -> MapValue map -> MapValue map -> MapValue map) -> map -> map -> map

-- | Combine a list of maps.
--   
--   When a key exists in two different maps, apply a function to both of
--   the values and use the result of that as the value of the key in the
--   resulting map.
unionsWith :: IsMap map => (MapValue map -> MapValue map -> MapValue map) -> [map] -> map

-- | Apply a function over every key-value pair of a map.
mapWithKey :: IsMap map => (ContainerKey map -> MapValue map -> MapValue map) -> map -> map

-- | Apply a function over every key of a pair and run <a>unionsWith</a>
--   over the results.
omapKeysWith :: IsMap map => (MapValue map -> MapValue map -> MapValue map) -> (ContainerKey map -> ContainerKey map) -> map -> map

-- | Filter values in a map.
filterMap :: IsMap map => (MapValue map -> Bool) -> map -> map

-- | Equivalent to <a>filterMap</a>, but the function accepts the key, as
--   well as the value.
filterWithKey :: IsMap map => (ContainerKey map -> MapValue map -> Bool) -> map -> map

-- | In some cases, <a>MapValue</a> and <a>Element</a> will be different,
--   e.g., the <a>IsMap</a> instance of associated lists.
type family MapValue map

-- | A <tt>Map</tt> type polymorphic in both its key and value.
class () => BiPolyMap (map :: Type -> Type -> Type) where {
    type family BPMKeyConstraint (map :: Type -> Type -> Type) key;
}
mapKeysWith :: (BiPolyMap map, BPMKeyConstraint map k1, BPMKeyConstraint map k2) => (v -> v -> v) -> (k1 -> k2) -> map k1 v -> map k2 v
type family BPMKeyConstraint (map :: Type -> Type -> Type) key

-- | A guaranteed-polymorphic <tt>Map</tt>, which allows for more
--   polymorphic versions of functions.
class () => PolyMap (map :: Type -> Type)

-- | Get the difference between two maps, using the left map's values.
differenceMap :: PolyMap map => map value1 -> map value2 -> map value1

-- | Get the intersection of two maps, using the left map's values.
intersectionMap :: PolyMap map => map value1 -> map value2 -> map value1

-- | Get the intersection of two maps with a supplied function that takes
--   in the left map's value and the right map's value.
intersectionWithMap :: PolyMap map => (value1 -> value2 -> value3) -> map value1 -> map value2 -> map value3

-- | A container whose values are stored in Key-Value pairs.
class (Monoid set, Semigroup set, MonoFoldable set, Eq ContainerKey set, GrowingAppend set) => SetContainer set where {
    
    -- | The type of the key
    type family ContainerKey set;
}

-- | Check if there is a value with the supplied key in the container.
member :: SetContainer set => ContainerKey set -> set -> Bool

-- | Check if there isn't a value with the supplied key in the container.
notMember :: SetContainer set => ContainerKey set -> set -> Bool

-- | Get the union of two containers.
union :: SetContainer set => set -> set -> set

-- | Combine a collection of <tt>SetContainer</tt>s, with left-most values
--   overriding when there are matching keys.
unions :: (SetContainer set, MonoFoldable mono, Element mono ~ set) => mono -> set

-- | Get the difference of two containers.
difference :: SetContainer set => set -> set -> set

-- | Get the intersection of two containers.
intersection :: SetContainer set => set -> set -> set

-- | Get a list of all of the keys in the container.
keys :: SetContainer set => set -> [ContainerKey set]

-- | The type of the key
type family ContainerKey set
class () => ToBuilder value builder
toBuilder :: ToBuilder value builder => value -> builder
type ByteStringBuilder = Builder
type BlazeBuilder = Builder
type TextBuilder = Builder

-- | A monomorphic container that is not null.
data () => NonNull mono

-- | The parameterizable maybe monad, obtained by composing an arbitrary
--   monad with the <a>Maybe</a> monad.
--   
--   Computations are actions that may produce a value or exit.
--   
--   The <a>return</a> function yields a computation that produces that
--   value, while <tt>&gt;&gt;=</tt> sequences two subcomputations, exiting
--   if either computation does.
newtype () => MaybeT (m :: Type -> Type) a
MaybeT :: m (Maybe a) -> MaybeT (m :: Type -> Type) a
[runMaybeT] :: MaybeT (m :: Type -> Type) a -> m (Maybe a)
async :: MonadUnliftIO m => m a -> m (Async a)

-- | <a>deepseq</a>: fully evaluates the first argument, before returning
--   the second.
--   
--   The name <a>deepseq</a> is used to illustrate the relationship to
--   <a>seq</a>: where <a>seq</a> is shallow in the sense that it only
--   evaluates the top level of its argument, <a>deepseq</a> traverses the
--   entire data structure evaluating it completely.
--   
--   <a>deepseq</a> can be useful for forcing pending exceptions,
--   eradicating space leaks, or forcing lazy I/O to happen. It is also
--   useful in conjunction with parallel Strategies (see the
--   <tt>parallel</tt> package).
--   
--   There is no guarantee about the ordering of evaluation. The
--   implementation may evaluate the components of the structure in any
--   order or in parallel. To impose an actual order on evaluation, use
--   <tt>pseq</tt> from <a>Control.Parallel</a> in the <tt>parallel</tt>
--   package.
deepseq :: NFData a => a -> b -> b
infixr 0 `deepseq`
say :: MonadIO m => Text -> m ()

-- | <tt><a>void</a> value</tt> discards or ignores the result of
--   evaluation, such as the return value of an <a>IO</a> action.
--   
--   <h4><b>Examples</b></h4>
--   
--   Replace the contents of a <tt><a>Maybe</a> <a>Int</a></tt> with unit:
--   
--   <pre>
--   &gt;&gt;&gt; void Nothing
--   Nothing
--   
--   &gt;&gt;&gt; void (Just 3)
--   Just ()
--   </pre>
--   
--   Replace the contents of an <tt><a>Either</a> <a>Int</a>
--   <a>Int</a></tt> with unit, resulting in an <tt><a>Either</a>
--   <a>Int</a> <tt>()</tt></tt>:
--   
--   <pre>
--   &gt;&gt;&gt; void (Left 8675309)
--   Left 8675309
--   
--   &gt;&gt;&gt; void (Right 8675309)
--   Right ()
--   </pre>
--   
--   Replace every element of a list with unit:
--   
--   <pre>
--   &gt;&gt;&gt; void [1,2,3]
--   [(),(),()]
--   </pre>
--   
--   Replace the second element of a pair with unit:
--   
--   <pre>
--   &gt;&gt;&gt; void (1,2)
--   (1,())
--   </pre>
--   
--   Discard the result of an <a>IO</a> action:
--   
--   <pre>
--   &gt;&gt;&gt; mapM print [1,2]
--   1
--   2
--   [(),()]
--   
--   &gt;&gt;&gt; void $ mapM print [1,2]
--   1
--   2
--   </pre>
void :: Functor f => f a -> f ()
getArgs :: MonadIO m => m [Text]

-- | <pre>
--   comparing p x y = compare (p x) (p y)
--   </pre>
--   
--   Useful combinator for use in conjunction with the <tt>xxxBy</tt>
--   family of functions from <a>Data.List</a>, for example:
--   
--   <pre>
--   ... sortBy (comparing fst) ...
--   </pre>
comparing :: Ord a => (b -> a) -> b -> b -> Ordering

-- | <a>isInfixOf</a> takes two sequences and returns <tt>true</tt> if the
--   first sequence is contained, wholly and intact, anywhere within the
--   second.
isInfixOf :: (IsSequence seq, Eq (Element seq)) => seq -> seq -> Bool

-- | Synonym for <a>ointercalate</a>
intercalate :: (MonoFoldable mono, Monoid (Element mono)) => Element mono -> mono -> Element mono

-- | same behavior as <a>nub</a>, but requires <a>Ord</a> and is <tt>O(n
--   log n)</tt>
--   
--   <a>https://github.com/nh2/haskell-ordnub</a>
ordNub :: Ord a => [a] -> [a]

-- | same behavior as <a>nubBy</a>, but requires <a>Ord</a> and is <tt>O(n
--   log n)</tt>
--   
--   <a>https://github.com/nh2/haskell-ordnub</a>
ordNubBy :: Ord b => (a -> b) -> (a -> a -> Bool) -> [a] -> [a]
equating :: Eq a => (b -> a) -> b -> b -> Bool
concurrently :: MonadUnliftIO m => m a -> m b -> m (a, b)

-- | Synonym for <a>onull</a>
null :: MonoFoldable mono => mono -> Bool
withTempFile :: MonadUnliftIO m => FilePath -> String -> (FilePath -> Handle -> m a) -> m a
withTempDirectory :: MonadUnliftIO m => FilePath -> String -> (FilePath -> m a) -> m a

-- | <b>Safe</b> version of <a>initEx</a>, only working on non-nullable
--   sequences.
init :: IsSequence seq => NonNull seq -> seq
cancel :: MonadIO m => Async a -> m ()
withAsync :: MonadUnliftIO m => m a -> (Async a -> m b) -> m b
uninterruptibleCancel :: MonadIO m => Async a -> m ()
wait :: MonadIO m => Async a -> m a
waitCatch :: MonadIO m => Async a -> m (Either SomeException a)

-- | Synonym for <a>otoList</a>
toList :: MonoFoldable mono => mono -> [Element mono]

-- | Synonym for <a>ofoldMap</a>
foldMap :: (MonoFoldable mono, Monoid m) => (Element mono -> m) -> mono -> m

-- | Synonym for <a>ofoldr</a>
foldr :: MonoFoldable mono => (Element mono -> b -> b) -> b -> mono -> b

-- | Synonym for <a>ofoldl'</a>
foldl' :: MonoFoldable mono => (a -> Element mono -> a) -> a -> mono -> a

-- | Synonym for <a>olength</a>
length :: MonoFoldable mono => mono -> Int

-- | Synonym for <a>oelem</a>
elem :: (MonoFoldable mono, Eq (Element mono)) => Element mono -> mono -> Bool

-- | Get the maximum element of a monomorphic container.
--   
--   Safe version of <a>maximumEx</a>, only works on monomorphic containers
--   wrapped in a <a>NonNull</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt; let xs = ncons 1 [2, 3 :: Int]
--   &gt; <a>maximum</a> xs
--   3
--   </pre>
maximum :: (MonoFoldable mono, Ord (Element mono)) => NonNull mono -> Element mono

-- | Get the minimum element of a monomorphic container.
--   
--   Safe version of <a>minimumEx</a>, only works on monomorphic containers
--   wrapped in a <a>NonNull</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt; let xs = ncons 1 [2, 3 :: Int]
--   &gt; <a>minimum</a> xs
--   1
--   </pre>
minimum :: (MonoFoldable mono, Ord (Element mono)) => NonNull mono -> Element mono

-- | Synonym for <a>osum</a>
sum :: (MonoFoldable mono, Num (Element mono)) => mono -> Element mono

-- | Synonym for <a>oproduct</a>
product :: (MonoFoldable mono, Num (Element mono)) => mono -> Element mono
(++) :: Monoid m => m -> m -> m
infixr 5 ++

-- | The value of <tt><a>seq</a> a b</tt> is bottom if <tt>a</tt> is
--   bottom, and otherwise equal to <tt>b</tt>. In other words, it
--   evaluates the first argument <tt>a</tt> to weak head normal form
--   (WHNF). <a>seq</a> is usually introduced to improve performance by
--   avoiding unneeded laziness.
--   
--   A note on evaluation order: the expression <tt><a>seq</a> a b</tt>
--   does <i>not</i> guarantee that <tt>a</tt> will be evaluated before
--   <tt>b</tt>. The only guarantee given by <a>seq</a> is that the both
--   <tt>a</tt> and <tt>b</tt> will be evaluated before <a>seq</a> returns
--   a value. In particular, this means that <tt>b</tt> may be evaluated
--   before <tt>a</tt>. If you need to guarantee a specific order of
--   evaluation, you must use the function <tt>pseq</tt> from the
--   "parallel" package.
seq :: forall {r :: RuntimeRep} a (b :: TYPE r). a -> b -> b
infixr 0 `seq`
zip :: Zip f => f a -> f b -> f (a, b)
zipWith :: Zip f => (a -> b -> c) -> f a -> f b -> f c
unzip :: Zip f => f (a, b) -> (f a, f b)
print :: (Show a, MonadIO m) => a -> m ()

-- | <a>otherwise</a> is defined as the value <a>True</a>. It helps to make
--   guards more readable. eg.
--   
--   <pre>
--   f x | x &lt; 0     = ...
--       | otherwise = ...
--   </pre>
otherwise :: Bool
map :: Functor f => (a -> b) -> f a -> f b

-- | Application operator. This operator is redundant, since ordinary
--   application <tt>(f x)</tt> means the same as <tt>(f <a>$</a> x)</tt>.
--   However, <a>$</a> has low, right-associative binding precedence, so it
--   sometimes allows parentheses to be omitted; for example:
--   
--   <pre>
--   f $ g $ h x  =  f (g (h x))
--   </pre>
--   
--   It is also useful in higher-order situations, such as <tt><a>map</a>
--   (<a>$</a> 0) xs</tt>, or <tt><a>zipWith</a> (<a>$</a>) fs xs</tt>.
--   
--   Note that <tt>(<a>$</a>)</tt> is representation-polymorphic in its
--   result type, so that <tt>foo <a>$</a> True</tt> where <tt>foo :: Bool
--   -&gt; Int#</tt> is well-typed.
($) :: forall (r :: RuntimeRep) a (b :: TYPE r). (a -> b) -> a -> b
infixr 0 $

-- | General coercion from <a>Integral</a> types.
--   
--   WARNING: This function performs silent truncation if the result type
--   is not at least as big as the argument's type.
fromIntegral :: (Integral a, Num b) => a -> b

-- | General coercion to <a>Fractional</a> types.
--   
--   WARNING: This function goes through the <a>Rational</a> type, which
--   does not have values for <tt>NaN</tt> for example. This means it does
--   not round-trip.
--   
--   For <a>Double</a> it also behaves differently with or without -O0:
--   
--   <pre>
--   Prelude&gt; realToFrac nan -- With -O0
--   -Infinity
--   Prelude&gt; realToFrac nan
--   NaN
--   </pre>
realToFrac :: (Real a, Fractional b) => a -> b

-- | Conditional failure of <a>Alternative</a> computations. Defined by
--   
--   <pre>
--   guard True  = <a>pure</a> ()
--   guard False = <a>empty</a>
--   </pre>
--   
--   <h4><b>Examples</b></h4>
--   
--   Common uses of <a>guard</a> include conditionally signaling an error
--   in an error monad and conditionally rejecting the current choice in an
--   <a>Alternative</a>-based parser.
--   
--   As an example of signaling an error in the error monad <a>Maybe</a>,
--   consider a safe division function <tt>safeDiv x y</tt> that returns
--   <a>Nothing</a> when the denominator <tt>y</tt> is zero and
--   <tt><a>Just</a> (x `div` y)</tt> otherwise. For example:
--   
--   <pre>
--   &gt;&gt;&gt; safeDiv 4 0
--   Nothing
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; safeDiv 4 2
--   Just 2
--   </pre>
--   
--   A definition of <tt>safeDiv</tt> using guards, but not <a>guard</a>:
--   
--   <pre>
--   safeDiv :: Int -&gt; Int -&gt; Maybe Int
--   safeDiv x y | y /= 0    = Just (x `div` y)
--               | otherwise = Nothing
--   </pre>
--   
--   A definition of <tt>safeDiv</tt> using <a>guard</a> and <a>Monad</a>
--   <tt>do</tt>-notation:
--   
--   <pre>
--   safeDiv :: Int -&gt; Int -&gt; Maybe Int
--   safeDiv x y = do
--     guard (y /= 0)
--     return (x `div` y)
--   </pre>
guard :: Alternative f => Bool -> f ()

-- | The <a>join</a> function is the conventional monad join operator. It
--   is used to remove one level of monadic structure, projecting its bound
--   argument into the outer level.
--   
--   '<tt><a>join</a> bss</tt>' can be understood as the <tt>do</tt>
--   expression
--   
--   <pre>
--   do bs &lt;- bss
--      bs
--   </pre>
--   
--   <h4><b>Examples</b></h4>
--   
--   A common use of <a>join</a> is to run an <a>IO</a> computation
--   returned from an <a>STM</a> transaction, since <a>STM</a> transactions
--   can't perform <a>IO</a> directly. Recall that
--   
--   <pre>
--   <a>atomically</a> :: STM a -&gt; IO a
--   </pre>
--   
--   is used to run <a>STM</a> transactions atomically. So, by specializing
--   the types of <a>atomically</a> and <a>join</a> to
--   
--   <pre>
--   <a>atomically</a> :: STM (IO b) -&gt; IO (IO b)
--   <a>join</a>       :: IO (IO b)  -&gt; IO b
--   </pre>
--   
--   we can compose them as
--   
--   <pre>
--   <a>join</a> . <a>atomically</a> :: STM (IO b) -&gt; IO b
--   </pre>
--   
--   to run an <a>STM</a> transaction and the <a>IO</a> action it returns.
join :: Monad m => m (m a) -> m a

-- | Boolean "and", lazy in the second argument
(&&) :: Bool -> Bool -> Bool
infixr 3 &&

-- | Boolean "or", lazy in the second argument
(||) :: Bool -> Bool -> Bool
infixr 2 ||

-- | Boolean "not"
not :: Bool -> Bool

-- | <a>error</a> stops execution and displays an error message.
error :: forall (r :: RuntimeRep) (a :: TYPE r). HasCallStack => [Char] -> a

-- | We define our own <a>undefined</a> which is marked as deprecated. This
--   makes it useful to use during development, but lets you more easily
--   get notifications if you accidentally ship partial code in production.
--   
--   The classy prelude recommendation for when you need to really have a
--   partial function in production is to use <a>error</a> with a very
--   descriptive message so that, in case an exception is thrown, you get
--   more information than <tt><a>Prelude</a>.<a>undefined</a></tt>.
--   
--   Since 0.5.5
undefined :: HasCallStack => a

-- | Same as <a>&gt;&gt;=</a>, but with the arguments interchanged.
(=<<) :: Monad m => (a -> m b) -> m a -> m b
infixr 1 =<<

-- | Conditional execution of <a>Applicative</a> expressions. For example,
--   
--   <pre>
--   when debug (putStrLn "Debugging")
--   </pre>
--   
--   will output the string <tt>Debugging</tt> if the Boolean value
--   <tt>debug</tt> is <a>True</a>, and otherwise do nothing.
when :: Applicative f => Bool -> f () -> f ()

-- | Promote a function to a monad.
liftM :: Monad m => (a1 -> r) -> m a1 -> m r

-- | Promote a function to a monad, scanning the monadic arguments from
--   left to right. For example,
--   
--   <pre>
--   liftM2 (+) [0,1] [0,2] = [0,2,1,3]
--   liftM2 (+) (Just 1) Nothing = Nothing
--   </pre>
liftM2 :: Monad m => (a1 -> a2 -> r) -> m a1 -> m a2 -> m r

-- | In many situations, the <a>liftM</a> operations can be replaced by
--   uses of <a>ap</a>, which promotes function application.
--   
--   <pre>
--   return f `ap` x1 `ap` ... `ap` xn
--   </pre>
--   
--   is equivalent to
--   
--   <pre>
--   liftMn f x1 x2 ... xn
--   </pre>
ap :: Monad m => m (a -> b) -> m a -> m b

-- | the identity morphism
id :: forall (a :: k). Category cat => cat a a

-- | morphism composition
(.) :: forall (b :: k) (c :: k) (a :: k). Category cat => cat b c -> cat a b -> cat a c
infixr 9 .

-- | <tt>const x y</tt> always evaluates to <tt>x</tt>, ignoring its second
--   argument.
--   
--   <pre>
--   &gt;&gt;&gt; const 42 "hello"
--   42
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; map (const 42) [0..3]
--   [42,42,42,42]
--   </pre>
const :: a -> b -> a

-- | <tt><a>flip</a> f</tt> takes its (first) two arguments in the reverse
--   order of <tt>f</tt>.
--   
--   <pre>
--   &gt;&gt;&gt; flip (++) "hello" "world"
--   "worldhello"
--   </pre>
flip :: (a -> b -> c) -> b -> a -> c

-- | Strict (call-by-value) application operator. It takes a function and
--   an argument, evaluates the argument to weak head normal form (WHNF),
--   then calls the function with that value.
($!) :: forall (r :: RuntimeRep) a (b :: TYPE r). (a -> b) -> a -> b
infixr 0 $!

-- | <tt><a>until</a> p f</tt> yields the result of applying <tt>f</tt>
--   until <tt>p</tt> holds.
until :: (a -> Bool) -> (a -> a) -> a -> a

-- | <a>asTypeOf</a> is a type-restricted version of <a>const</a>. It is
--   usually used as an infix operator, and its typing forces its first
--   argument (which is usually overloaded) to have the same type as the
--   second.
asTypeOf :: a -> a -> a

-- | the same as <tt><a>flip</a> (<a>-</a>)</tt>.
--   
--   Because <tt>-</tt> is treated specially in the Haskell grammar,
--   <tt>(-</tt> <i>e</i><tt>)</tt> is not a section, but an application of
--   prefix negation. However, <tt>(<a>subtract</a></tt>
--   <i>exp</i><tt>)</tt> is equivalent to the disallowed section.
subtract :: Num a => a -> a -> a

-- | The <a>maybe</a> function takes a default value, a function, and a
--   <a>Maybe</a> value. If the <a>Maybe</a> value is <a>Nothing</a>, the
--   function returns the default value. Otherwise, it applies the function
--   to the value inside the <a>Just</a> and returns the result.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   <pre>
--   &gt;&gt;&gt; maybe False odd (Just 3)
--   True
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; maybe False odd Nothing
--   False
--   </pre>
--   
--   Read an integer from a string using <a>readMaybe</a>. If we succeed,
--   return twice the integer; that is, apply <tt>(*2)</tt> to it. If
--   instead we fail to parse an integer, return <tt>0</tt> by default:
--   
--   <pre>
--   &gt;&gt;&gt; import Text.Read ( readMaybe )
--   
--   &gt;&gt;&gt; maybe 0 (*2) (readMaybe "5")
--   10
--   
--   &gt;&gt;&gt; maybe 0 (*2) (readMaybe "")
--   0
--   </pre>
--   
--   Apply <a>show</a> to a <tt>Maybe Int</tt>. If we have <tt>Just n</tt>,
--   we want to show the underlying <a>Int</a> <tt>n</tt>. But if we have
--   <a>Nothing</a>, we return the empty string instead of (for example)
--   "Nothing":
--   
--   <pre>
--   &gt;&gt;&gt; maybe "" show (Just 5)
--   "5"
--   
--   &gt;&gt;&gt; maybe "" show Nothing
--   ""
--   </pre>
maybe :: b -> (a -> b) -> Maybe a -> b

-- | The <a>isJust</a> function returns <a>True</a> iff its argument is of
--   the form <tt>Just _</tt>.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   <pre>
--   &gt;&gt;&gt; isJust (Just 3)
--   True
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; isJust (Just ())
--   True
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; isJust Nothing
--   False
--   </pre>
--   
--   Only the outer constructor is taken into consideration:
--   
--   <pre>
--   &gt;&gt;&gt; isJust (Just Nothing)
--   True
--   </pre>
isJust :: Maybe a -> Bool

-- | The <a>isNothing</a> function returns <a>True</a> iff its argument is
--   <a>Nothing</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   <pre>
--   &gt;&gt;&gt; isNothing (Just 3)
--   False
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; isNothing (Just ())
--   False
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; isNothing Nothing
--   True
--   </pre>
--   
--   Only the outer constructor is taken into consideration:
--   
--   <pre>
--   &gt;&gt;&gt; isNothing (Just Nothing)
--   False
--   </pre>
isNothing :: Maybe a -> Bool

-- | The <a>fromMaybe</a> function takes a default value and a <a>Maybe</a>
--   value. If the <a>Maybe</a> is <a>Nothing</a>, it returns the default
--   value; otherwise, it returns the value contained in the <a>Maybe</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   <pre>
--   &gt;&gt;&gt; fromMaybe "" (Just "Hello, World!")
--   "Hello, World!"
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; fromMaybe "" Nothing
--   ""
--   </pre>
--   
--   Read an integer from a string using <a>readMaybe</a>. If we fail to
--   parse an integer, we want to return <tt>0</tt> by default:
--   
--   <pre>
--   &gt;&gt;&gt; import Text.Read ( readMaybe )
--   
--   &gt;&gt;&gt; fromMaybe 0 (readMaybe "5")
--   5
--   
--   &gt;&gt;&gt; fromMaybe 0 (readMaybe "")
--   0
--   </pre>
fromMaybe :: a -> Maybe a -> a

-- | The <a>maybeToList</a> function returns an empty list when given
--   <a>Nothing</a> or a singleton list when given <a>Just</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   <pre>
--   &gt;&gt;&gt; maybeToList (Just 7)
--   [7]
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; maybeToList Nothing
--   []
--   </pre>
--   
--   One can use <a>maybeToList</a> to avoid pattern matching when combined
--   with a function that (safely) works on lists:
--   
--   <pre>
--   &gt;&gt;&gt; import Text.Read ( readMaybe )
--   
--   &gt;&gt;&gt; sum $ maybeToList (readMaybe "3")
--   3
--   
--   &gt;&gt;&gt; sum $ maybeToList (readMaybe "")
--   0
--   </pre>
maybeToList :: Maybe a -> [a]

-- | The <a>listToMaybe</a> function returns <a>Nothing</a> on an empty
--   list or <tt><a>Just</a> a</tt> where <tt>a</tt> is the first element
--   of the list.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   <pre>
--   &gt;&gt;&gt; listToMaybe []
--   Nothing
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; listToMaybe [9]
--   Just 9
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; listToMaybe [1,2,3]
--   Just 1
--   </pre>
--   
--   Composing <a>maybeToList</a> with <a>listToMaybe</a> should be the
--   identity on singleton/empty lists:
--   
--   <pre>
--   &gt;&gt;&gt; maybeToList $ listToMaybe [5]
--   [5]
--   
--   &gt;&gt;&gt; maybeToList $ listToMaybe []
--   []
--   </pre>
--   
--   But not on lists with more than one element:
--   
--   <pre>
--   &gt;&gt;&gt; maybeToList $ listToMaybe [1,2,3]
--   [1]
--   </pre>
listToMaybe :: [a] -> Maybe a

-- | Takes all of the <a>Just</a> values from a sequence of <tt>Maybe
--   t</tt>s and concatenates them into an unboxed sequence of <tt>t</tt>s.
--   
--   Since 0.6.2
catMaybes :: (IsSequence (f (Maybe t)), Functor f, Element (f (Maybe t)) ~ Maybe t) => f (Maybe t) -> f t

-- | The <a>mapMaybe</a> function is a version of <a>map</a> which can
--   throw out elements. In particular, the functional argument returns
--   something of type <tt><a>Maybe</a> b</tt>. If this is <a>Nothing</a>,
--   no element is added on to the result list. If it is <tt><a>Just</a>
--   b</tt>, then <tt>b</tt> is included in the result list.
--   
--   <h4><b>Examples</b></h4>
--   
--   Using <tt><a>mapMaybe</a> f x</tt> is a shortcut for
--   <tt><a>catMaybes</a> $ <a>map</a> f x</tt> in most cases:
--   
--   <pre>
--   &gt;&gt;&gt; import Text.Read ( readMaybe )
--   
--   &gt;&gt;&gt; let readMaybeInt = readMaybe :: String -&gt; Maybe Int
--   
--   &gt;&gt;&gt; mapMaybe readMaybeInt ["1", "Foo", "3"]
--   [1,3]
--   
--   &gt;&gt;&gt; catMaybes $ map readMaybeInt ["1", "Foo", "3"]
--   [1,3]
--   </pre>
--   
--   If we map the <a>Just</a> constructor, the entire list should be
--   returned:
--   
--   <pre>
--   &gt;&gt;&gt; mapMaybe Just [1,2,3]
--   [1,2,3]
--   </pre>
mapMaybe :: (a -> Maybe b) -> [a] -> [b]

-- | <a>repeat</a> <tt>x</tt> is an infinite list, with <tt>x</tt> the
--   value of every element.
--   
--   <pre>
--   &gt;&gt;&gt; repeat 17
--   [17,17,17,17,17,17,17,17,17...
--   </pre>
repeat :: a -> [a]
zip3 :: Zip3 f => f a -> f b -> f c -> f (a, b, c)
zipWith3 :: Zip3 f => (a -> b -> c -> d) -> f a -> f b -> f c -> f d
unzip3 :: Zip3 f => f (a, b, c) -> (f a, f b, f c)
even :: Integral a => a -> Bool
odd :: Integral a => a -> Bool

-- | raise a number to a non-negative integral power
(^) :: (Num a, Integral b) => a -> b -> a
infixr 8 ^

-- | raise a number to an integral power
(^^) :: (Fractional a, Integral b) => a -> b -> a
infixr 8 ^^

-- | Extract the first component of a pair.
fst :: (a, b) -> a

-- | Extract the second component of a pair.
snd :: (a, b) -> b

-- | <a>curry</a> converts an uncurried function to a curried function.
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt;&gt;&gt; curry fst 1 2
--   1
--   </pre>
curry :: ((a, b) -> c) -> a -> b -> c

-- | <a>uncurry</a> converts a curried function to a function on pairs.
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt;&gt;&gt; uncurry (+) (1,2)
--   3
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; uncurry ($) (show, 1)
--   "1"
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; map (uncurry max) [(1,2), (3,4), (6,8)]
--   [2,4,8]
--   </pre>
uncurry :: (a -> b -> c) -> (a, b) -> c

-- | An infix synonym for <a>fmap</a>.
--   
--   The name of this operator is an allusion to <a>$</a>. Note the
--   similarities between their types:
--   
--   <pre>
--    ($)  ::              (a -&gt; b) -&gt;   a -&gt;   b
--   (&lt;$&gt;) :: Functor f =&gt; (a -&gt; b) -&gt; f a -&gt; f b
--   </pre>
--   
--   Whereas <a>$</a> is function application, <a>&lt;$&gt;</a> is function
--   application lifted over a <a>Functor</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   Convert from a <tt><a>Maybe</a> <a>Int</a></tt> to a <tt><a>Maybe</a>
--   <a>String</a></tt> using <a>show</a>:
--   
--   <pre>
--   &gt;&gt;&gt; show &lt;$&gt; Nothing
--   Nothing
--   
--   &gt;&gt;&gt; show &lt;$&gt; Just 3
--   Just "3"
--   </pre>
--   
--   Convert from an <tt><a>Either</a> <a>Int</a> <a>Int</a></tt> to an
--   <tt><a>Either</a> <a>Int</a></tt> <a>String</a> using <a>show</a>:
--   
--   <pre>
--   &gt;&gt;&gt; show &lt;$&gt; Left 17
--   Left 17
--   
--   &gt;&gt;&gt; show &lt;$&gt; Right 17
--   Right "17"
--   </pre>
--   
--   Double each element of a list:
--   
--   <pre>
--   &gt;&gt;&gt; (*2) &lt;$&gt; [1,2,3]
--   [2,4,6]
--   </pre>
--   
--   Apply <a>even</a> to the second element of a pair:
--   
--   <pre>
--   &gt;&gt;&gt; even &lt;$&gt; (2,2)
--   (2,True)
--   </pre>
(<$>) :: Functor f => (a -> b) -> f a -> f b
infixl 4 <$>

-- | <tt><a>on</a> b u x y</tt> runs the binary function <tt>b</tt>
--   <i>on</i> the results of applying unary function <tt>u</tt> to two
--   arguments <tt>x</tt> and <tt>y</tt>. From the opposite perspective, it
--   transforms two inputs and combines the outputs.
--   
--   <pre>
--   ((+) `<a>on</a>` f) x y = f x + f y
--   </pre>
--   
--   Typical usage: <tt><a>sortBy</a> (<a>compare</a> `on`
--   <a>fst</a>)</tt>.
--   
--   Algebraic properties:
--   
--   <ul>
--   <li><pre>(*) `on` <a>id</a> = (*) -- (if (*) ∉ {⊥, <a>const</a>
--   ⊥})</pre></li>
--   <li><pre>((*) `on` f) `on` g = (*) `on` (f . g)</pre></li>
--   <li><pre><a>flip</a> on f . <a>flip</a> on g = <a>flip</a> on (g .
--   f)</pre></li>
--   </ul>
on :: (b -> b -> c) -> (a -> b) -> a -> a -> c
infixl 0 `on`

-- | Case analysis for the <a>Either</a> type. If the value is
--   <tt><a>Left</a> a</tt>, apply the first function to <tt>a</tt>; if it
--   is <tt><a>Right</a> b</tt>, apply the second function to <tt>b</tt>.
--   
--   <h4><b>Examples</b></h4>
--   
--   We create two values of type <tt><a>Either</a> <a>String</a>
--   <a>Int</a></tt>, one using the <a>Left</a> constructor and another
--   using the <a>Right</a> constructor. Then we apply "either" the
--   <a>length</a> function (if we have a <a>String</a>) or the "times-two"
--   function (if we have an <a>Int</a>):
--   
--   <pre>
--   &gt;&gt;&gt; let s = Left "foo" :: Either String Int
--   
--   &gt;&gt;&gt; let n = Right 3 :: Either String Int
--   
--   &gt;&gt;&gt; either length (*2) s
--   3
--   
--   &gt;&gt;&gt; either length (*2) n
--   6
--   </pre>
either :: (a -> c) -> (b -> c) -> Either a b -> c

-- | Partitions a list of <a>Either</a> into two lists. All the <a>Left</a>
--   elements are extracted, in order, to the first component of the
--   output. Similarly the <a>Right</a> elements are extracted to the
--   second component of the output.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   <pre>
--   &gt;&gt;&gt; let list = [ Left "foo", Right 3, Left "bar", Right 7, Left "baz" ]
--   
--   &gt;&gt;&gt; partitionEithers list
--   (["foo","bar","baz"],[3,7])
--   </pre>
--   
--   The pair returned by <tt><a>partitionEithers</a> x</tt> should be the
--   same pair as <tt>(<a>lefts</a> x, <a>rights</a> x)</tt>:
--   
--   <pre>
--   &gt;&gt;&gt; let list = [ Left "foo", Right 3, Left "bar", Right 7, Left "baz" ]
--   
--   &gt;&gt;&gt; partitionEithers list == (lefts list, rights list)
--   True
--   </pre>
partitionEithers :: [Either a b] -> ([a], [b])

-- | Synonym for <a>otraverse_</a>
traverse_ :: (MonoFoldable mono, Applicative f) => (Element mono -> f b) -> mono -> f ()

-- | Synonym for <a>ofor_</a>
for_ :: (MonoFoldable mono, Applicative f) => mono -> (Element mono -> f b) -> f ()

-- | Synonym for <a>osequence_</a>
sequence_ :: (Applicative m, MonoFoldable mono, Element mono ~ m ()) => mono -> m ()

-- | Synonym for <a>oconcat</a>
concat :: (MonoFoldable mono, Monoid (Element mono)) => mono -> Element mono

-- | Synonym for <a>oconcatMap</a>
concatMap :: (MonoFoldable mono, Monoid m) => (Element mono -> m) -> mono -> m

-- | Synonym for <a>oand</a>
and :: (MonoFoldable mono, Element mono ~ Bool) => mono -> Bool

-- | Synonym for <a>oor</a>
or :: (MonoFoldable mono, Element mono ~ Bool) => mono -> Bool

-- | Synonym for <a>oany</a>
any :: MonoFoldable mono => (Element mono -> Bool) -> mono -> Bool

-- | Synonym for <a>oall</a>
all :: MonoFoldable mono => (Element mono -> Bool) -> mono -> Bool

-- | Synonym for <a>onotElem</a>
notElem :: (MonoFoldable mono, Eq (Element mono)) => Element mono -> mono -> Bool

-- | <a>isPrefixOf</a> takes two sequences and returns <a>True</a> if the
--   first sequence is a prefix of the second.
isPrefixOf :: (IsSequence seq, Eq (Element seq)) => seq -> seq -> Bool

-- | <a>isSuffixOf</a> takes two sequences and returns <a>True</a> if the
--   first sequence is a suffix of the second.
isSuffixOf :: (IsSequence seq, Eq (Element seq)) => seq -> seq -> Bool

-- | Sort a ordered sequence.
--   
--   <pre>
--   &gt; <a>sort</a> [4,3,1,2]
--   [1,2,3,4]
--   </pre>
sort :: (SemiSequence seq, Ord (Element seq)) => seq -> seq

-- | Construct an <a>IOException</a> value with a string describing the
--   error. The <tt>fail</tt> method of the <a>IO</a> instance of the
--   <a>Monad</a> class raises a <a>userError</a>, thus:
--   
--   <pre>
--   instance Monad IO where
--     ...
--     fail s = ioError (userError s)
--   </pre>
userError :: String -> IOError
catch :: (MonadUnliftIO m, Exception e) => m a -> (e -> m a) -> m a
throwIO :: (MonadIO m, Exception e) => e -> m a
evaluate :: MonadIO m => a -> m a

-- | Raise an <a>IOException</a> in the <a>IO</a> monad.
ioError :: IOError -> IO a

-- | Write a character to stdout
--   
--   Uses system locale settings
putChar :: MonadIO m => Char -> m ()

-- | Write a Text to stdout
--   
--   Uses system locale settings
putStr :: MonadIO m => Text -> m ()

-- | Write a Text followed by a newline to stdout
--   
--   Uses system locale settings
putStrLn :: MonadIO m => Text -> m ()

-- | Read a character from stdin
--   
--   Uses system locale settings
getChar :: MonadIO m => m Char

-- | Read a line from stdin
--   
--   Uses system locale settings
getLine :: MonadIO m => m Text

-- | Read all input from stdin into a lazy Text (<a>LText</a>)
--   
--   Uses system locale settings
getContents :: MonadIO m => m LText

-- | Takes a function of type 'LText -&gt; LText' and passes all input on
--   stdin to it, then prints result to stdout
--   
--   Uses lazy IO Uses system locale settings
interact :: MonadIO m => (LText -> LText) -> m ()

-- | Strictly read a file into a <a>ByteString</a>.
readFile :: MonadIO m => FilePath -> m ByteString

-- | Write a <a>ByteString</a> to a file.
writeFile :: MonadIO m => FilePath -> ByteString -> m ()

-- | <a>for</a> is <a>traverse</a> with its arguments flipped. For a
--   version that ignores the results see <a>for_</a>.
for :: (Traversable t, Applicative f) => t a -> (a -> f b) -> f (t b)

-- | Synonym for <a>ofoldM</a>
foldM :: (MonoFoldable mono, Monad m) => (a -> Element mono -> m a) -> a -> mono -> m a

-- | The reverse of <a>when</a>.
unless :: Applicative f => Bool -> f () -> f ()

-- | Return the first element of a monomorphic container.
--   
--   Safe version of <a>headEx</a>, only works on monomorphic containers
--   wrapped in a <a>NonNull</a>.
head :: MonoFoldable mono => NonNull mono -> Element mono

-- | <b>Safe</b> version of <a>tailEx</a>, only working on non-nullable
--   sequences.
tail :: IsSequence seq => NonNull seq -> seq

-- | Return the last element of a monomorphic container.
--   
--   Safe version of <a>lastEx</a>, only works on monomorphic containers
--   wrapped in a <a>NonNull</a>.
last :: MonoFoldable mono => NonNull mono -> Element mono

-- | a variant of <a>deepseq</a> that is useful in some circumstances:
--   
--   <pre>
--   force x = x `deepseq` x
--   </pre>
--   
--   <tt>force x</tt> fully evaluates <tt>x</tt>, and then returns it. Note
--   that <tt>force x</tt> only performs evaluation when the value of
--   <tt>force x</tt> itself is demanded, so essentially it turns shallow
--   evaluation into deep evaluation.
--   
--   <a>force</a> can be conveniently used in combination with
--   <tt>ViewPatterns</tt>:
--   
--   <pre>
--   {-# LANGUAGE BangPatterns, ViewPatterns #-}
--   import Control.DeepSeq
--   
--   someFun :: ComplexData -&gt; SomeResult
--   someFun (force -&gt; !arg) = {- 'arg' will be fully evaluated -}
--   </pre>
--   
--   Another useful application is to combine <a>force</a> with
--   <a>evaluate</a> in order to force deep evaluation relative to other
--   <a>IO</a> operations:
--   
--   <pre>
--   import Control.Exception (evaluate)
--   import Control.DeepSeq
--   
--   main = do
--     result &lt;- evaluate $ force $ pureComputation
--     {- 'result' will be fully evaluated at this point -}
--     return ()
--   </pre>
--   
--   Finally, here's an exception safe variant of the <tt>readFile'</tt>
--   example:
--   
--   <pre>
--   readFile' :: FilePath -&gt; IO String
--   readFile' fn = bracket (openFile fn ReadMode) hClose $ \h -&gt;
--                          evaluate . force =&lt;&lt; hGetContents h
--   </pre>
force :: NFData a => a -> a
tryIO :: MonadUnliftIO m => m a -> m (Either IOException a)
catchIO :: MonadUnliftIO m => m a -> (IOException -> m a) -> m a

-- | We define our own <a>trace</a> (and also its variants) which provides
--   a warning when used. So that tracing is available during development,
--   but the compiler reminds you to not leave them in the code for
--   production.
trace :: String -> a -> a

-- | Since 0.5.9
traceShowId :: Show a => a -> a
traceShow :: Show a => a -> b -> b

-- | Strictly read the contents of the given <a>Handle</a> into a
--   <a>ByteString</a>.
hGetContents :: MonadIO m => Handle -> m ByteString
hClose :: MonadIO m => Handle -> m ()

-- | Synonym for <a>oforM_</a>
forM_ :: (MonoFoldable mono, Applicative m) => mono -> (Element mono -> m ()) -> m ()
stderr :: Handle
stdout :: Handle

-- | Combine two paths with a path separator. If the second path starts
--   with a path separator or a drive letter, then it returns the second.
--   The intention is that <tt>readFile (dir <a>&lt;/&gt;</a> file)</tt>
--   will access the same file as <tt>setCurrentDirectory dir; readFile
--   file</tt>.
--   
--   <pre>
--   Posix:   "/directory" &lt;/&gt; "file.ext" == "/directory/file.ext"
--   Windows: "/directory" &lt;/&gt; "file.ext" == "/directory\\file.ext"
--            "directory" &lt;/&gt; "/file.ext" == "/file.ext"
--   Valid x =&gt; (takeDirectory x &lt;/&gt; takeFileName x) `equalFilePath` x
--   </pre>
--   
--   Combined:
--   
--   <pre>
--   Posix:   "/" &lt;/&gt; "test" == "/test"
--   Posix:   "home" &lt;/&gt; "bob" == "home/bob"
--   Posix:   "x:" &lt;/&gt; "foo" == "x:/foo"
--   Windows: "C:\\foo" &lt;/&gt; "bar" == "C:\\foo\\bar"
--   Windows: "home" &lt;/&gt; "bob" == "home\\bob"
--   </pre>
--   
--   Not combined:
--   
--   <pre>
--   Posix:   "home" &lt;/&gt; "/bob" == "/bob"
--   Windows: "home" &lt;/&gt; "C:\\bob" == "C:\\bob"
--   </pre>
--   
--   Not combined (tricky):
--   
--   On Windows, if a filepath starts with a single slash, it is relative
--   to the root of the current drive. In [1], this is (confusingly)
--   referred to as an absolute path. The current behavior of
--   <a>&lt;/&gt;</a> is to never combine these forms.
--   
--   <pre>
--   Windows: "home" &lt;/&gt; "/bob" == "/bob"
--   Windows: "home" &lt;/&gt; "\\bob" == "\\bob"
--   Windows: "C:\\home" &lt;/&gt; "\\bob" == "\\bob"
--   </pre>
--   
--   On Windows, from [1]: "If a file name begins with only a disk
--   designator but not the backslash after the colon, it is interpreted as
--   a relative path to the current directory on the drive with the
--   specified letter." The current behavior of <a>&lt;/&gt;</a> is to
--   never combine these forms.
--   
--   <pre>
--   Windows: "D:\\foo" &lt;/&gt; "C:bar" == "C:bar"
--   Windows: "C:\\foo" &lt;/&gt; "C:bar" == "C:bar"
--   </pre>
(</>) :: FilePath -> FilePath -> FilePath
infixr 5 </>

-- | If the first argument evaluates to <a>True</a>, then the result is the
--   second argument. Otherwise an <a>AssertionFailed</a> exception is
--   raised, containing a <a>String</a> with the source file and line
--   number of the call to <a>assert</a>.
--   
--   Assertions can normally be turned on or off with a compiler flag (for
--   GHC, assertions are normally on unless optimisation is turned on with
--   <tt>-O</tt> or the <tt>-fignore-asserts</tt> option is given). When
--   assertions are turned off, the first argument to <a>assert</a> is
--   ignored, and the second argument is returned as the result.
assert :: Bool -> a -> a

-- | One or none.
--   
--   It is useful for modelling any computation that is allowed to fail.
--   
--   <h4><b>Examples</b></h4>
--   
--   Using the <a>Alternative</a> instance of <a>Control.Monad.Except</a>,
--   the following functions:
--   
--   <pre>
--   &gt;&gt;&gt; import Control.Monad.Except
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; canFail = throwError "it failed" :: Except String Int
--   
--   &gt;&gt;&gt; final = return 42                :: Except String Int
--   </pre>
--   
--   Can be combined by allowing the first function to fail:
--   
--   <pre>
--   &gt;&gt;&gt; runExcept $ canFail *&gt; final
--   Left "it failed"
--   
--   &gt;&gt;&gt; runExcept $ optional canFail *&gt; final
--   Right 42
--   </pre>
optional :: Alternative f => f a -> f (Maybe a)

-- | Synonym for <a>fromList</a>
pack :: IsSequence seq => [Element seq] -> seq

-- | Synonym for <a>otoList</a>
unpack :: MonoFoldable mono => mono -> [Element mono]

-- | Create a sequence from a single element.
--   
--   <pre>
--   &gt; <a>singleton</a> <tt>a</tt> :: <tt>String</tt>
--   "a"
--   &gt; <a>singleton</a> <tt>a</tt> :: <tt>Vector</tt> <a>Char</a>
--   <a>fromList</a> "a"
--   </pre>
singleton :: MonoPointed seq => Element seq -> seq

delete :: (IsSequence seq, Eq (Element seq)) => Element seq -> seq -> seq

-- | <b>Safely</b> convert from a <tt>NonEmpty</tt> list to a non-null
--   monomorphic container.
fromNonEmpty :: IsSequence seq => NonEmpty (Element seq) -> NonNull seq

-- | <b>Safely</b> convert from a <a>NonNull</a> container to a
--   <tt>NonEmpty</tt> list.
toNonEmpty :: MonoFoldable mono => NonNull mono -> NonEmpty (Element mono)
try :: (MonadUnliftIO m, Exception e) => m a -> m (Either e a)

-- | <a>&amp;</a> is a reverse application operator. This provides
--   notational convenience. Its precedence is one higher than that of the
--   forward application operator <a>$</a>, which allows <a>&amp;</a> to be
--   nested in <a>$</a>.
--   
--   <pre>
--   &gt;&gt;&gt; 5 &amp; (+1) &amp; show
--   "6"
--   </pre>
(&) :: a -> (a -> b) -> b
infixl 1 &
finally :: MonadUnliftIO m => m a -> m b -> m a
handle :: (MonadUnliftIO m, Exception e) => (e -> m a) -> m a -> m a

-- | Case analysis for the <a>Bool</a> type. <tt><a>bool</a> x y p</tt>
--   evaluates to <tt>x</tt> when <tt>p</tt> is <a>False</a>, and evaluates
--   to <tt>y</tt> when <tt>p</tt> is <a>True</a>.
--   
--   This is equivalent to <tt>if p then y else x</tt>; that is, one can
--   think of it as an if-then-else construct with its arguments reordered.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   <pre>
--   &gt;&gt;&gt; bool "foo" "bar" True
--   "bar"
--   
--   &gt;&gt;&gt; bool "foo" "bar" False
--   "foo"
--   </pre>
--   
--   Confirm that <tt><a>bool</a> x y p</tt> and <tt>if p then y else
--   x</tt> are equivalent:
--   
--   <pre>
--   &gt;&gt;&gt; let p = True; x = "bar"; y = "foo"
--   
--   &gt;&gt;&gt; bool x y p == if p then y else x
--   True
--   
--   &gt;&gt;&gt; let p = False
--   
--   &gt;&gt;&gt; bool x y p == if p then y else x
--   True
--   </pre>
bool :: a -> a -> Bool -> a

-- | Lift a computation from the argument monad to the constructed monad.
lift :: (MonadTrans t, Monad m) => m a -> t m a
atomically :: MonadIO m => STM a -> m a
bracket :: MonadUnliftIO m => m a -> (a -> m b) -> (a -> m c) -> m c

-- | Get the maximum element of a monomorphic container, using a supplied
--   element ordering function.
--   
--   Safe version of <a>maximumByEx</a>, only works on monomorphic
--   containers wrapped in a <a>NonNull</a>.
maximumBy :: MonoFoldable mono => (Element mono -> Element mono -> Ordering) -> NonNull mono -> Element mono

-- | Get the minimum element of a monomorphic container, using a supplied
--   element ordering function.
--   
--   Safe version of <a>minimumByEx</a>, only works on monomorphic
--   containers wrapped in a <a>NonNull</a>.
minimumBy :: MonoFoldable mono => (Element mono -> Element mono -> Ordering) -> NonNull mono -> Element mono
openFile :: MonadIO m => FilePath -> IOMode -> m Handle

-- | Equivalent to <tt><a>groupBy</a> (==)</tt>
group :: (IsSequence seq, Eq (Element seq)) => seq -> [seq]

-- | <a>forM</a> is <a>mapM</a> with its arguments flipped. For a version
--   that ignores the results see <a>forM_</a>.
forM :: (Traversable t, Monad m) => t a -> (a -> m b) -> m (t b)
throwTo :: (Exception e, MonadIO m) => ThreadId -> e -> m ()
atomicWriteIORef :: MonadIO m => IORef a -> a -> m ()
atomicModifyIORef :: MonadIO m => IORef a -> (a -> (a, b)) -> m b
stdin :: Handle

-- | Repeat an action indefinitely.
--   
--   <h4><b>Examples</b></h4>
--   
--   A common use of <a>forever</a> is to process input from network
--   sockets, <a>Handle</a>s, and channels (e.g. <a>MVar</a> and
--   <a>Chan</a>).
--   
--   For example, here is how we might implement an <a>echo server</a>,
--   using <a>forever</a> both to listen for client connections on a
--   network socket and to echo client input on client connection handles:
--   
--   <pre>
--   echoServer :: Socket -&gt; IO ()
--   echoServer socket = <a>forever</a> $ do
--     client &lt;- accept socket
--     <a>forkFinally</a> (echo client) (\_ -&gt; hClose client)
--     where
--       echo :: Handle -&gt; IO ()
--       echo client = <a>forever</a> $
--         hGetLine client &gt;&gt;= hPutStrLn client
--   </pre>
--   
--   Note that "forever" isn't necessarily non-terminating. If the action
--   is in a <tt><a>MonadPlus</a></tt> and short-circuits after some number
--   of iterations. then <tt><a>forever</a></tt> actually returns
--   <a>mzero</a>, effectively short-circuiting its caller.
forever :: Applicative f => f a -> f b
hSeek :: MonadIO m => Handle -> SeekMode -> Integer -> m ()
hFlush :: MonadIO m => Handle -> m ()
mask :: MonadUnliftIO m => ((forall a. () => m a -> m a) -> m b) -> m b
newTChanIO :: MonadIO m => m (TChan a)
newBroadcastTChanIO :: MonadIO m => m (TChan a)
newTQueueIO :: MonadIO m => m (TQueue a)
newTBQueueIO :: MonadIO m => Natural -> m (TBQueue a)
newTMVarIO :: MonadIO m => a -> m (TMVar a)

-- | An error indicating that an <a>IO</a> operation failed because one of
--   its arguments does not exist.
isDoesNotExistError :: IOError -> Bool

-- | An error indicating that an <a>IO</a> operation failed because one of
--   its arguments is a single-use resource, which is already being used
--   (for example, opening the same file twice for writing might give this
--   error).
isAlreadyInUseError :: IOError -> Bool

-- | An error indicating that an <a>IO</a> operation failed because the
--   user does not have sufficient operating system privilege to perform
--   that operation.
isPermissionError :: IOError -> Bool

-- | An error indicating that an <a>IO</a> operation failed because the
--   device is full.
isFullError :: IOError -> Bool

-- | An error indicating that an <a>IO</a> operation failed because the end
--   of file has been reached.
isEOFError :: IOError -> Bool

-- | An error indicating that an <a>IO</a> operation failed because the
--   operation was not possible. Any computation which returns an <a>IO</a>
--   result may fail with <a>isIllegalOperation</a>. In some cases, an
--   implementation will not be able to distinguish between the possible
--   error causes. In this case it should fail with
--   <a>isIllegalOperation</a>.
isIllegalOperation :: IOError -> Bool

-- | Split the input between the two argument arrows and combine their
--   output. Note that this is in general not a functor.
--   
--   The default definition may be overridden with a more efficient version
--   if desired.
(***) :: Arrow a => a b c -> a b' c' -> a (b, b') (c, c')
infixr 3 ***

-- | Fanout: send the input to both argument arrows and combine their
--   output.
--   
--   The default definition may be overridden with a more efficient version
--   if desired.
(&&&) :: Arrow a => a b c -> a b c' -> a b (c, c')
infixr 3 &&&
hWaitForInput :: MonadIO m => Handle -> Int -> m Bool

-- | Same as <tt>sortBy . comparing</tt>.
--   
--   Since 0.7.0
sortOn :: (Ord o, SemiSequence seq) => (Element seq -> o) -> seq -> seq

-- | A variant of <a>&lt;*&gt;</a> with the arguments reversed.
(<**>) :: Applicative f => f a -> f (a -> b) -> f b
infixl 4 <**>

-- | Lift a function to actions. Equivalent to Functor's <a>fmap</a> but
--   implemented using only <a>Applicative</a>'s methods: <tt><a>liftA</a>
--   f a = <a>pure</a> f <a>&lt;*&gt;</a> a</tt>
--   
--   As such this function may be used to implement a <a>Functor</a>
--   instance from an <a>Applicative</a> one.
--   
--   <h4><b>Examples</b></h4>
--   
--   Using the Applicative instance for Lists:
--   
--   <pre>
--   &gt;&gt;&gt; liftA (+1) [1, 2]
--   [2,3]
--   </pre>
--   
--   Or the Applicative instance for <a>Maybe</a>
--   
--   <pre>
--   &gt;&gt;&gt; liftA (+1) (Just 3)
--   Just 4
--   </pre>
liftA :: Applicative f => (a -> b) -> f a -> f b

-- | Lift a ternary function to actions.
liftA3 :: Applicative f => (a -> b -> c -> d) -> f a -> f b -> f c -> f d

-- | Promote a function to a monad, scanning the monadic arguments from
--   left to right (cf. <a>liftM2</a>).
liftM3 :: Monad m => (a1 -> a2 -> a3 -> r) -> m a1 -> m a2 -> m a3 -> m r

-- | Promote a function to a monad, scanning the monadic arguments from
--   left to right (cf. <a>liftM2</a>).
liftM4 :: Monad m => (a1 -> a2 -> a3 -> a4 -> r) -> m a1 -> m a2 -> m a3 -> m a4 -> m r

-- | Promote a function to a monad, scanning the monadic arguments from
--   left to right (cf. <a>liftM2</a>).
liftM5 :: Monad m => (a1 -> a2 -> a3 -> a4 -> a5 -> r) -> m a1 -> m a2 -> m a3 -> m a4 -> m a5 -> m r

-- | Swap the components of a pair.
swap :: (a, b) -> (b, a)
newEmptyMVar :: MonadIO m => m (MVar a)
newMVar :: MonadIO m => a -> m (MVar a)
takeMVar :: MonadIO m => MVar a -> m a
readMVar :: MonadIO m => MVar a -> m a
putMVar :: MonadIO m => MVar a -> a -> m ()
tryTakeMVar :: MonadIO m => MVar a -> m (Maybe a)
tryPutMVar :: MonadIO m => MVar a -> a -> m Bool
tryReadMVar :: MonadIO m => MVar a -> m (Maybe a)
isEmptyMVar :: MonadIO m => MVar a -> m Bool

-- | Flipped version of <a>&lt;$&gt;</a>.
--   
--   <pre>
--   (<a>&lt;&amp;&gt;</a>) = <a>flip</a> <a>fmap</a>
--   </pre>
--   
--   <h4><b>Examples</b></h4>
--   
--   Apply <tt>(+1)</tt> to a list, a <a>Just</a> and a <a>Right</a>:
--   
--   <pre>
--   &gt;&gt;&gt; Just 2 &lt;&amp;&gt; (+1)
--   Just 3
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; [1,2,3] &lt;&amp;&gt; (+1)
--   [2,3,4]
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; Right 3 &lt;&amp;&gt; (+1)
--   Right 4
--   </pre>
(<&>) :: Functor f => f a -> (a -> b) -> f b
infixl 1 <&>

-- | Flipped version of <a>&lt;$</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   Replace the contents of a <tt><a>Maybe</a> <a>Int</a></tt> with a
--   constant <a>String</a>:
--   
--   <pre>
--   &gt;&gt;&gt; Nothing $&gt; "foo"
--   Nothing
--   
--   &gt;&gt;&gt; Just 90210 $&gt; "foo"
--   Just "foo"
--   </pre>
--   
--   Replace the contents of an <tt><a>Either</a> <a>Int</a>
--   <a>Int</a></tt> with a constant <a>String</a>, resulting in an
--   <tt><a>Either</a> <a>Int</a> <a>String</a></tt>:
--   
--   <pre>
--   &gt;&gt;&gt; Left 8675309 $&gt; "foo"
--   Left 8675309
--   
--   &gt;&gt;&gt; Right 8675309 $&gt; "foo"
--   Right "foo"
--   </pre>
--   
--   Replace each element of a list with a constant <a>String</a>:
--   
--   <pre>
--   &gt;&gt;&gt; [1,2,3] $&gt; "foo"
--   ["foo","foo","foo"]
--   </pre>
--   
--   Replace the second element of a pair with a constant <a>String</a>:
--   
--   <pre>
--   &gt;&gt;&gt; (1,2) $&gt; "foo"
--   (1,"foo")
--   </pre>
($>) :: Functor f => f a -> b -> f b
infixl 4 $>

-- | Extracts from a list of <a>Either</a> all the <a>Left</a> elements.
--   All the <a>Left</a> elements are extracted in order.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   <pre>
--   &gt;&gt;&gt; let list = [ Left "foo", Right 3, Left "bar", Right 7, Left "baz" ]
--   
--   &gt;&gt;&gt; lefts list
--   ["foo","bar","baz"]
--   </pre>
lefts :: [Either a b] -> [a]

-- | Extracts from a list of <a>Either</a> all the <a>Right</a> elements.
--   All the <a>Right</a> elements are extracted in order.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   <pre>
--   &gt;&gt;&gt; let list = [ Left "foo", Right 3, Left "bar", Right 7, Left "baz" ]
--   
--   &gt;&gt;&gt; rights list
--   [3,7]
--   </pre>
rights :: [Either a b] -> [b]

-- | <a>asProxyTypeOf</a> is a type-restricted version of <a>const</a>. It
--   is usually used as an infix operator, and its typing forces its first
--   argument (which is usually overloaded) to have the same type as the
--   tag of the second.
--   
--   <pre>
--   &gt;&gt;&gt; import Data.Word
--   
--   &gt;&gt;&gt; :type asProxyTypeOf 123 (Proxy :: Proxy Word8)
--   asProxyTypeOf 123 (Proxy :: Proxy Word8) :: Word8
--   </pre>
--   
--   Note the lower-case <tt>proxy</tt> in the definition. This allows any
--   type constructor with just one argument to be passed to the function,
--   for example we could also write
--   
--   <pre>
--   &gt;&gt;&gt; import Data.Word
--   
--   &gt;&gt;&gt; :type asProxyTypeOf 123 (Just (undefined :: Word8))
--   asProxyTypeOf 123 (Just (undefined :: Word8)) :: Word8
--   </pre>
asProxyTypeOf :: a -> proxy a -> a
getMonotonicTime :: MonadIO m => m Double

-- | Synonym for <a>ofold</a>
fold :: (MonoFoldable mono, Monoid (Element mono)) => mono -> Element mono

-- | Synonym for <a>ofoldlM</a>
foldlM :: (MonoFoldable mono, Monad m) => (a -> Element mono -> m a) -> a -> mono -> m a

-- | Synonym for <a>omapM_</a>
mapM_ :: (MonoFoldable mono, Applicative m) => (Element mono -> m ()) -> mono -> m ()

-- | The sum of a collection of actions using <a>(&lt;|&gt;)</a>,
--   generalizing <a>concat</a>.
--   
--   <a>asum</a> is just like <a>msum</a>, but generalised to
--   <a>Alternative</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   Basic usage:
--   
--   <pre>
--   &gt;&gt;&gt; asum [Just "Hello", Nothing, Just "World"]
--   Just "Hello"
--   </pre>
asum :: (Foldable t, Alternative f) => t (f a) -> f a

-- | <a>stripPrefix</a> drops the given prefix from a sequence. It returns
--   <a>Nothing</a> if the sequence did not start with the prefix given, or
--   <a>Just</a> the sequence after the prefix, if it does.
--   
--   <pre>
--   &gt; <a>stripPrefix</a> "foo" "foobar"
--   <a>Just</a> "bar"
--   &gt; <a>stripPrefix</a> "abc" "foobar"
--   <a>Nothing</a>
--   </pre>
stripPrefix :: (IsSequence seq, Eq (Element seq)) => seq -> seq -> Maybe seq

deleteBy :: (IsSequence seq, Eq (Element seq)) => (Element seq -> Element seq -> Bool) -> Element seq -> seq -> seq

-- | An alias for <a>difference</a>.
(\\) :: SetContainer a => a -> a -> a
infixl 9 \\

-- | An alias for <a>intersection</a>.
intersect :: SetContainer a => a -> a -> a
zip4 :: Zip4 f => f a -> f b -> f c -> f d -> f (a, b, c, d)
zipWith4 :: Zip4 f => (a -> b -> c -> d -> e) -> f a -> f b -> f c -> f d -> f e
unzip4 :: Zip4 f => f (a, b, c, d) -> (f a, f b, f c, f d)
zip5 :: Zip5 f => f a -> f b -> f c -> f d -> f e -> f (a, b, c, d, e)
zipWith5 :: Zip5 f => (a -> b -> c -> d -> e -> g) -> f a -> f b -> f c -> f d -> f e -> f g
unzip5 :: Zip5 f => f (a, b, c, d, e) -> (f a, f b, f c, f d, f e)
zip6 :: Zip6 f => f a -> f b -> f c -> f d -> f e -> f g -> f (a, b, c, d, e, g)
zipWith6 :: Zip6 f => (a -> b -> c -> d -> e -> g -> h) -> f a -> f b -> f c -> f d -> f e -> f g -> f h
unzip6 :: Zip6 f => f (a, b, c, d, e, g) -> (f a, f b, f c, f d, f e, f g)
zip7 :: Zip7 f => f a -> f b -> f c -> f d -> f e -> f g -> f h -> f (a, b, c, d, e, g, h)
zipWith7 :: Zip7 f => (a -> b -> c -> d -> e -> g -> h -> i) -> f a -> f b -> f c -> f d -> f e -> f g -> f h -> f i
unzip7 :: Zip7 f => f (a, b, c, d, e, g, h) -> (f a, f b, f c, f d, f e, f g, f h)
catchAny :: MonadUnliftIO m => m a -> (SomeException -> m a) -> m a
onException :: MonadUnliftIO m => m a -> m b -> m a
mask_ :: MonadUnliftIO m => m a -> m a
uninterruptibleMask_ :: MonadUnliftIO m => m a -> m a
uninterruptibleMask :: MonadUnliftIO m => ((forall a. () => m a -> m a) -> m b) -> m b
newIORef :: MonadIO m => a -> m (IORef a)
readIORef :: MonadIO m => IORef a -> m a
writeIORef :: MonadIO m => IORef a -> a -> m ()
atomicModifyIORef' :: MonadIO m => IORef a -> (a -> (a, b)) -> m b
mkWeakIORef :: MonadUnliftIO m => IORef a -> m () -> m (Weak (IORef a))
modifyIORef :: MonadIO m => IORef a -> (a -> a) -> m ()
modifyIORef' :: MonadIO m => IORef a -> (a -> a) -> m ()

asyncExceptionToException :: Exception e => e -> SomeException

asyncExceptionFromException :: Exception e => SomeException -> Maybe e

-- | Compose two alternative STM actions (GHC only).
--   
--   If the first action completes without retrying then it forms the
--   result of the <a>orElse</a>. Otherwise, if the first action retries,
--   then the second action is tried in its place. If both actions retry
--   then the <a>orElse</a> as a whole retries.
orElse :: STM a -> STM a -> STM a

-- | Create a new <a>TVar</a> holding a value supplied
newTVar :: a -> STM (TVar a)
newTVarIO :: MonadIO m => a -> m (TVar a)
readTVarIO :: MonadIO m => TVar a -> m a

-- | Return the current value stored in a <a>TVar</a>.
readTVar :: TVar a -> STM a

-- | Write the supplied value into a <a>TVar</a>.
writeTVar :: TVar a -> a -> STM ()
withMVar :: MonadUnliftIO m => MVar a -> (a -> m b) -> m b
modifyMVar_ :: MonadUnliftIO m => MVar a -> (a -> m a) -> m ()
catchJust :: (MonadUnliftIO m, Exception e) => (e -> Maybe b) -> m a -> (b -> m a) -> m a
handleJust :: (MonadUnliftIO m, Exception e) => (e -> Maybe b) -> (b -> m a) -> m a -> m a
tryJust :: (MonadUnliftIO m, Exception e) => (e -> Maybe b) -> m a -> m (Either b a)
bracket_ :: MonadUnliftIO m => m a -> m b -> m c -> m c
bracketOnError :: MonadUnliftIO m => m a -> (a -> m b) -> (a -> m c) -> m c
catches :: MonadUnliftIO m => m a -> [Handler m a] -> m a
swapMVar :: MonadIO m => MVar a -> a -> m a
withMVarMasked :: MonadUnliftIO m => MVar a -> (a -> m b) -> m b
modifyMVar :: MonadUnliftIO m => MVar a -> (a -> m (a, b)) -> m b
modifyMVarMasked_ :: MonadUnliftIO m => MVar a -> (a -> m a) -> m ()
modifyMVarMasked :: MonadUnliftIO m => MVar a -> (a -> m (a, b)) -> m b
mkWeakMVar :: MonadUnliftIO m => MVar a -> m () -> m (Weak (MVar a))

-- | The construct <a>tryIOError</a> <tt>comp</tt> exposes IO errors which
--   occur within a computation, and which are not fully handled.
--   
--   Non-I/O exceptions are not caught by this variant; to catch all
--   exceptions, use <a>try</a> from <a>Control.Exception</a>.
tryIOError :: IO a -> IO (Either IOError a)

-- | Construct an <a>IOException</a> of the given type where the second
--   argument describes the error location and the third and fourth
--   argument contain the file handle and file path of the file involved in
--   the error if applicable.
mkIOError :: IOErrorType -> String -> Maybe Handle -> Maybe FilePath -> IOError

-- | An error indicating that an <a>IO</a> operation failed because one of
--   its arguments already exists.
isAlreadyExistsError :: IOError -> Bool

-- | A programmer-defined error value constructed using <a>userError</a>.
isUserError :: IOError -> Bool

-- | An error indicating that the operation failed because the resource
--   vanished. See <a>resourceVanishedErrorType</a>.
isResourceVanishedError :: IOError -> Bool

-- | I/O error where the operation failed because one of its arguments
--   already exists.
alreadyExistsErrorType :: IOErrorType

-- | I/O error where the operation failed because one of its arguments does
--   not exist.
doesNotExistErrorType :: IOErrorType

-- | I/O error where the operation failed because one of its arguments is a
--   single-use resource, which is already being used.
alreadyInUseErrorType :: IOErrorType

-- | I/O error where the operation failed because the device is full.
fullErrorType :: IOErrorType

-- | I/O error where the operation failed because the end of file has been
--   reached.
eofErrorType :: IOErrorType

-- | I/O error where the operation is not possible.
illegalOperationErrorType :: IOErrorType

-- | I/O error where the operation failed because the user does not have
--   sufficient operating system privilege to perform that operation.
permissionErrorType :: IOErrorType

-- | I/O error that is programmer-defined.
userErrorType :: IOErrorType

-- | I/O error where the operation failed because the resource vanished.
--   This happens when, for example, attempting to write to a closed socket
--   or attempting to write to a named pipe that was deleted.
resourceVanishedErrorType :: IOErrorType

-- | I/O error where the operation failed because one of its arguments
--   already exists.
isAlreadyExistsErrorType :: IOErrorType -> Bool

-- | I/O error where the operation failed because one of its arguments does
--   not exist.
isDoesNotExistErrorType :: IOErrorType -> Bool

-- | I/O error where the operation failed because one of its arguments is a
--   single-use resource, which is already being used.
isAlreadyInUseErrorType :: IOErrorType -> Bool

-- | I/O error where the operation failed because the device is full.
isFullErrorType :: IOErrorType -> Bool

-- | I/O error where the operation failed because the end of file has been
--   reached.
isEOFErrorType :: IOErrorType -> Bool

-- | I/O error where the operation is not possible.
isIllegalOperationErrorType :: IOErrorType -> Bool

-- | I/O error where the operation failed because the user does not have
--   sufficient operating system privilege to perform that operation.
isPermissionErrorType :: IOErrorType -> Bool

-- | I/O error that is programmer-defined.
isUserErrorType :: IOErrorType -> Bool

-- | I/O error where the operation failed because the resource vanished.
--   See <a>resourceVanishedErrorType</a>.
isResourceVanishedErrorType :: IOErrorType -> Bool
ioeGetErrorType :: IOError -> IOErrorType
ioeGetErrorString :: IOError -> String
ioeGetLocation :: IOError -> String
ioeGetHandle :: IOError -> Maybe Handle
ioeGetFileName :: IOError -> Maybe FilePath
ioeSetErrorType :: IOError -> IOErrorType -> IOError
ioeSetErrorString :: IOError -> String -> IOError
ioeSetLocation :: IOError -> String -> IOError
ioeSetHandle :: IOError -> Handle -> IOError
ioeSetFileName :: IOError -> FilePath -> IOError

-- | Catch any <a>IOException</a> that occurs in the computation and throw
--   a modified version.
modifyIOError :: (IOError -> IOError) -> IO a -> IO a

-- | Adds a location description and maybe a file path and file handle to
--   an <a>IOException</a>. If any of the file handle or file path is not
--   given the corresponding value in the <a>IOException</a> remains
--   unaltered.
annotateIOError :: IOError -> String -> Maybe Handle -> Maybe FilePath -> IOError
registerDelay :: MonadIO m => Int -> m (TVar Bool)
withFile :: MonadUnliftIO m => FilePath -> IOMode -> (Handle -> m a) -> m a
withBinaryFile :: MonadUnliftIO m => FilePath -> IOMode -> (Handle -> m a) -> m a
hFileSize :: MonadIO m => Handle -> m Integer
hSetFileSize :: MonadIO m => Handle -> Integer -> m ()
hIsEOF :: MonadIO m => Handle -> m Bool
hSetBuffering :: MonadIO m => Handle -> BufferMode -> m ()
hTell :: MonadIO m => Handle -> m Integer
hIsOpen :: MonadIO m => Handle -> m Bool
hIsClosed :: MonadIO m => Handle -> m Bool
hIsReadable :: MonadIO m => Handle -> m Bool
hIsWritable :: MonadIO m => Handle -> m Bool
hGetBuffering :: MonadIO m => Handle -> m BufferMode
hIsSeekable :: MonadIO m => Handle -> m Bool
hSetEcho :: MonadIO m => Handle -> Bool -> m ()
hGetEcho :: MonadIO m => Handle -> m Bool
hIsTerminalDevice :: MonadIO m => Handle -> m Bool
hReady :: MonadIO m => Handle -> m Bool

-- | Left-to-right composition of Kleisli arrows.
--   
--   '<tt>(bs <a>&gt;=&gt;</a> cs) a</tt>' can be understood as the
--   <tt>do</tt> expression
--   
--   <pre>
--   do b &lt;- bs a
--      cs b
--   </pre>
(>=>) :: Monad m => (a -> m b) -> (b -> m c) -> a -> m c
infixr 1 >=>

-- | Right-to-left composition of Kleisli arrows.
--   <tt>(<a>&gt;=&gt;</a>)</tt>, with the arguments flipped.
--   
--   Note how this operator resembles function composition
--   <tt>(<a>.</a>)</tt>:
--   
--   <pre>
--   (.)   ::            (b -&gt;   c) -&gt; (a -&gt;   b) -&gt; a -&gt;   c
--   (&lt;=&lt;) :: Monad m =&gt; (b -&gt; m c) -&gt; (a -&gt; m b) -&gt; a -&gt; m c
--   </pre>
(<=<) :: Monad m => (b -> m c) -> (a -> m b) -> a -> m c
infixr 1 <=<

-- | Like <a>replicateM</a>, but discards the result.
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt;&gt;&gt; replicateM_ 3 (putStrLn "a")
--   a
--   a
--   a
--   </pre>
replicateM_ :: Applicative m => Int -> m a -> m ()

-- | Since 0.5.9
traceShowM :: (Show a, Monad m) => a -> m ()

-- | Since 0.5.9
traceM :: Monad m => String -> m ()

-- | Since 0.5.9
traceId :: String -> String

-- | Prepend an element to a non-null <a>SemiSequence</a>.
(<|) :: SemiSequence seq => Element seq -> NonNull seq -> NonNull seq
infixr 5 <|

-- | Sort elements using the user supplied function to project something
--   out of each element. Inspired by
--   <a>http://hackage.haskell.org/packages/archive/base/latest/doc/html/GHC-Exts.html#v:sortWith</a>.
sortWith :: (Ord a, IsSequence c) => (Element c -> a) -> c -> c
newQSemN :: MonadIO m => Int -> m QSemN
waitQSemN :: MonadIO m => QSemN -> Int -> m ()
signalQSemN :: MonadIO m => QSemN -> Int -> m ()
newQSem :: MonadIO m => Int -> m QSem
waitQSem :: MonadIO m => QSem -> m ()
signalQSem :: MonadIO m => QSem -> m ()
newChan :: MonadIO m => m (Chan a)
writeChan :: MonadIO m => Chan a -> a -> m ()
readChan :: MonadIO m => Chan a -> m a
dupChan :: MonadIO m => Chan a -> m (Chan a)
getChanContents :: MonadIO m => Chan a -> m [a]
writeList2Chan :: MonadIO m => Chan a -> [a] -> m ()
timeout :: MonadUnliftIO m => Int -> m a -> m (Maybe a)
link :: MonadIO m => Async a -> m ()
poll :: MonadIO m => Async a -> m (Maybe (Either SomeException a))

-- | Write a <a>ByteString</a> to the given <a>Handle</a>.
hPut :: MonadIO m => Handle -> ByteString -> m ()

-- | <a>stripSuffix</a> drops the given suffix from a sequence. It returns
--   <a>Nothing</a> if the sequence did not end with the suffix given, or
--   <a>Just</a> the sequence before the suffix, if it does.
--   
--   <pre>
--   &gt; <a>stripSuffix</a> "bar" "foobar"
--   <a>Just</a> "foo"
--   &gt; <a>stripSuffix</a> "abc" "foobar"
--   <a>Nothing</a>
--   </pre>
stripSuffix :: (IsSequence seq, Eq (Element seq)) => seq -> seq -> Maybe seq

-- | Synonym for <a>ocompareLength</a>
compareLength :: (MonoFoldable mono, Integral i) => mono -> i -> Ordering
link2 :: MonadIO m => Async a -> Async b -> m ()

-- | Add an extension, even if there is already one there, equivalent to
--   <a>addExtension</a>.
--   
--   <pre>
--   "/directory/path" &lt;.&gt; "ext" == "/directory/path.ext"
--   "/directory/path" &lt;.&gt; ".ext" == "/directory/path.ext"
--   </pre>
(<.>) :: FilePath -> String -> FilePath
infixr 7 <.>
terror :: HasCallStack => Text -> a

-- | the deep analogue of <a>$!</a>. In the expression <tt>f $!! x</tt>,
--   <tt>x</tt> is fully evaluated before the function <tt>f</tt> is
--   applied to it.
($!!) :: NFData a => (a -> b) -> a -> b
infixr 0 $!!

-- | Retrieves a function of the current environment.
asks :: MonadReader r m => (r -> a) -> m a
primToPrim :: (PrimBase m1, PrimMonad m2, PrimState m1 ~ PrimState m2) => m1 a -> m2 a
primToIO :: (PrimBase m, PrimState m ~ RealWorld) => m a -> IO a
primToST :: PrimBase m => m a -> ST (PrimState m) a

-- | Convert to proleptic Gregorian calendar.
toGregorian :: Day -> (Year, MonthOfYear, DayOfMonth)

-- | Convert from proleptic Gregorian calendar. Invalid values will be
--   clipped to the correct range, month first, then day.
fromGregorian :: Year -> MonthOfYear -> DayOfMonth -> Day

-- | Get the current <a>UTCTime</a> from the system clock.
getCurrentTime :: IO UTCTime

-- | Locale representing American usage.
--   
--   <a>knownTimeZones</a> contains only the ten time-zones mentioned in
--   RFC 822 sec. 5: "UT", "GMT", "EST", "EDT", "CST", "CDT", "MST", "MDT",
--   "PST", "PDT". Note that the parsing functions will regardless parse
--   "UTC", single-letter military time-zones, and +HHMM format.
defaultTimeLocale :: TimeLocale

-- | Substitute various time-related information for each %-code in the
--   string, as per <a>formatCharacter</a>.
--   
--   The general form is
--   <tt>%&lt;modifier&gt;&lt;width&gt;&lt;alternate&gt;&lt;specifier&gt;</tt>,
--   where <tt>&lt;modifier&gt;</tt>, <tt>&lt;width&gt;</tt>, and
--   <tt>&lt;alternate&gt;</tt> are optional.
--   
--   <h2><tt>&lt;modifier&gt;</tt></h2>
--   
--   glibc-style modifiers can be used before the specifier (here marked as
--   <tt>z</tt>):
--   
--   <ul>
--   <li><i><tt>%-z</tt></i> no padding</li>
--   <li><i><tt>%_z</tt></i> pad with spaces</li>
--   <li><i><tt>%0z</tt></i> pad with zeros</li>
--   <li><i><tt>%^z</tt></i> convert to upper case</li>
--   <li><i><tt>%#z</tt></i> convert to lower case (consistently, unlike
--   glibc)</li>
--   </ul>
--   
--   <h2><tt>&lt;width&gt;</tt></h2>
--   
--   Width digits can also be used after any modifiers and before the
--   specifier (here marked as <tt>z</tt>), for example:
--   
--   <ul>
--   <li><i><tt>%4z</tt></i> pad to 4 characters (with default padding
--   character)</li>
--   <li><i><tt>%_12z</tt></i> pad with spaces to 12 characters</li>
--   </ul>
--   
--   <h2><tt>&lt;alternate&gt;</tt></h2>
--   
--   An optional <tt>E</tt> character indicates an alternate formatting.
--   Currently this only affects <tt>%Z</tt> and <tt>%z</tt>.
--   
--   <ul>
--   <li><i><tt>%Ez</tt></i> alternate formatting</li>
--   </ul>
--   
--   <h2><tt>&lt;specifier&gt;</tt></h2>
--   
--   For all types (note these three are done by <a>formatTime</a>, not by
--   <a>formatCharacter</a>):
--   
--   <ul>
--   <li><i><tt>%%</tt></i> <tt>%</tt></li>
--   <li><i><tt>%t</tt></i> tab</li>
--   <li><i><tt>%n</tt></i> newline</li>
--   </ul>
--   
--   <h3><tt>TimeZone</tt></h3>
--   
--   For <tt>TimeZone</tt> (and <tt>ZonedTime</tt> and <tt>UTCTime</tt>):
--   
--   <ul>
--   <li><i><tt>%z</tt></i> timezone offset in the format
--   <tt>±HHMM</tt></li>
--   <li><i><tt>%Ez</tt></i> timezone offset in the format
--   <tt>±HH:MM</tt></li>
--   <li><i><tt>%Z</tt></i> timezone name (or else offset in the format
--   <tt>±HHMM</tt>)</li>
--   <li><i><tt>%EZ</tt></i> timezone name (or else offset in the format
--   <tt>±HH:MM</tt>)</li>
--   </ul>
--   
--   <h3><tt>LocalTime</tt></h3>
--   
--   For <tt>LocalTime</tt> (and <tt>ZonedTime</tt> and <tt>UTCTime</tt>
--   and <tt>UniversalTime</tt>):
--   
--   <ul>
--   <li><i><tt>%c</tt></i> as <a>dateTimeFmt</a> <tt>locale</tt> (e.g.
--   <tt>%a %b %e %H:%M:%S %Z %Y</tt>)</li>
--   </ul>
--   
--   <h3><tt>TimeOfDay</tt></h3>
--   
--   For <tt>TimeOfDay</tt> (and <tt>LocalTime</tt> and <tt>ZonedTime</tt>
--   and <tt>UTCTime</tt> and <tt>UniversalTime</tt>):
--   
--   <ul>
--   <li><i><tt>%R</tt></i> same as <tt>%H:%M</tt></li>
--   <li><i><tt>%T</tt></i> same as <tt>%H:%M:%S</tt></li>
--   <li><i><tt>%X</tt></i> as <a>timeFmt</a> <tt>locale</tt> (e.g.
--   <tt>%H:%M:%S</tt>)</li>
--   <li><i><tt>%r</tt></i> as <a>time12Fmt</a> <tt>locale</tt> (e.g.
--   <tt>%I:%M:%S %p</tt>)</li>
--   <li><i><tt>%P</tt></i> day-half of day from (<a>amPm</a>
--   <tt>locale</tt>), converted to lowercase, <tt>am</tt>,
--   <tt>pm</tt></li>
--   <li><i><tt>%p</tt></i> day-half of day from (<a>amPm</a>
--   <tt>locale</tt>), <tt>AM</tt>, <tt>PM</tt></li>
--   <li><i><tt>%H</tt></i> hour of day (24-hour), 0-padded to two chars,
--   <tt>00</tt> - <tt>23</tt></li>
--   <li><i><tt>%k</tt></i> hour of day (24-hour), space-padded to two
--   chars, <tt> 0</tt> - <tt>23</tt></li>
--   <li><i><tt>%I</tt></i> hour of day-half (12-hour), 0-padded to two
--   chars, <tt>01</tt> - <tt>12</tt></li>
--   <li><i><tt>%l</tt></i> hour of day-half (12-hour), space-padded to two
--   chars, <tt> 1</tt> - <tt>12</tt></li>
--   <li><i><tt>%M</tt></i> minute of hour, 0-padded to two chars,
--   <tt>00</tt> - <tt>59</tt></li>
--   <li><i><tt>%S</tt></i> second of minute (without decimal part),
--   0-padded to two chars, <tt>00</tt> - <tt>60</tt></li>
--   <li><i><tt>%q</tt></i> picosecond of second, 0-padded to twelve chars,
--   <tt>000000000000</tt> - <tt>999999999999</tt>.</li>
--   <li><i><tt>%Q</tt></i> decimal point and fraction of second, up to 12
--   second decimals, without trailing zeros. For a whole number of
--   seconds, <tt>%Q</tt> omits the decimal point unless padding is
--   specified.</li>
--   </ul>
--   
--   <h3><tt>UTCTime</tt> and <tt>ZonedTime</tt></h3>
--   
--   For <tt>UTCTime</tt> and <tt>ZonedTime</tt>:
--   
--   <ul>
--   <li><i><tt>%s</tt></i> number of whole seconds since the Unix epoch.
--   For times before the Unix epoch, this is a negative number. Note that
--   in <tt>%s.%q</tt> and <tt>%s%Q</tt> the decimals are positive, not
--   negative. For example, 0.9 seconds before the Unix epoch is formatted
--   as <tt>-1.1</tt> with <tt>%s%Q</tt>.</li>
--   </ul>
--   
--   <h3><tt>DayOfWeek</tt></h3>
--   
--   For <tt>DayOfWeek</tt> (and <tt>Day</tt> and <tt>LocalTime</tt> and
--   <tt>ZonedTime</tt> and <tt>UTCTime</tt> and <tt>UniversalTime</tt>):
--   
--   <ul>
--   <li><i><tt>%u</tt></i> day of week number for Week Date format,
--   <tt>1</tt> (= Monday) - <tt>7</tt> (= Sunday)</li>
--   <li><i><tt>%w</tt></i> day of week number, <tt>0</tt> (= Sunday) -
--   <tt>6</tt> (= Saturday)</li>
--   <li><i><tt>%a</tt></i> day of week, short form (<a>snd</a> from
--   <a>wDays</a> <tt>locale</tt>), <tt>Sun</tt> - <tt>Sat</tt></li>
--   <li><i><tt>%A</tt></i> day of week, long form (<a>fst</a> from
--   <a>wDays</a> <tt>locale</tt>), <tt>Sunday</tt> -
--   <tt>Saturday</tt></li>
--   </ul>
--   
--   <h3><tt>Month</tt></h3>
--   
--   For <tt>Month</tt> (and <tt>Day</tt> and <tt>LocalTime</tt> and
--   <tt>ZonedTime</tt> and <tt>UTCTime</tt> and <tt>UniversalTime</tt>):
--   
--   <ul>
--   <li><i><tt>%Y</tt></i> year, no padding. Note <tt>%0Y</tt> and
--   <tt>%_Y</tt> pad to four chars</li>
--   <li><i><tt>%y</tt></i> year of century, 0-padded to two chars,
--   <tt>00</tt> - <tt>99</tt></li>
--   <li><i><tt>%C</tt></i> century, no padding. Note <tt>%0C</tt> and
--   <tt>%_C</tt> pad to two chars</li>
--   <li><i><tt>%B</tt></i> month name, long form (<a>fst</a> from
--   <a>months</a> <tt>locale</tt>), <tt>January</tt> -
--   <tt>December</tt></li>
--   <li><i><tt>%b</tt>, <tt>%h</tt></i> month name, short form (<a>snd</a>
--   from <a>months</a> <tt>locale</tt>), <tt>Jan</tt> - <tt>Dec</tt></li>
--   <li><i><tt>%m</tt></i> month of year, 0-padded to two chars,
--   <tt>01</tt> - <tt>12</tt></li>
--   </ul>
--   
--   <h3><tt>Day</tt></h3>
--   
--   For <tt>Day</tt> (and <tt>LocalTime</tt> and <tt>ZonedTime</tt> and
--   <tt>UTCTime</tt> and <tt>UniversalTime</tt>):
--   
--   <ul>
--   <li><i><tt>%D</tt></i> same as <tt>%m/%d/%y</tt></li>
--   <li><i><tt>%F</tt></i> same as <tt>%Y-%m-%d</tt></li>
--   <li><i><tt>%x</tt></i> as <a>dateFmt</a> <tt>locale</tt> (e.g.
--   <tt>%m/%d/%y</tt>)</li>
--   <li><i><tt>%d</tt></i> day of month, 0-padded to two chars,
--   <tt>01</tt> - <tt>31</tt></li>
--   <li><i><tt>%e</tt></i> day of month, space-padded to two chars, <tt>
--   1</tt> - <tt>31</tt></li>
--   <li><i><tt>%j</tt></i> day of year, 0-padded to three chars,
--   <tt>001</tt> - <tt>366</tt></li>
--   <li><i><tt>%f</tt></i> century for Week Date format, no padding. Note
--   <tt>%0f</tt> and <tt>%_f</tt> pad to two chars</li>
--   <li><i><tt>%V</tt></i> week of year for Week Date format, 0-padded to
--   two chars, <tt>01</tt> - <tt>53</tt></li>
--   <li><i><tt>%U</tt></i> week of year where weeks start on Sunday (as
--   <tt>sundayStartWeek</tt>), 0-padded to two chars, <tt>00</tt> -
--   <tt>53</tt></li>
--   <li><i><tt>%W</tt></i> week of year where weeks start on Monday (as
--   <tt>mondayStartWeek</tt>), 0-padded to two chars, <tt>00</tt> -
--   <tt>53</tt></li>
--   </ul>
--   
--   <h2>Duration types</h2>
--   
--   The specifiers for <tt>DiffTime</tt>, <tt>NominalDiffTime</tt>,
--   <tt>CalendarDiffDays</tt>, and <tt>CalendarDiffTime</tt> are
--   semantically separate from the other types. Specifiers on negative
--   time differences will generally be negative (think <a>rem</a> rather
--   than <a>mod</a>).
--   
--   <h3><tt>NominalDiffTime</tt> and <tt>DiffTime</tt></h3>
--   
--   Note that a "minute" of <tt>DiffTime</tt> is simply 60 SI seconds,
--   rather than a minute of civil time. Use <tt>NominalDiffTime</tt> to
--   work with civil time, ignoring any leap seconds.
--   
--   For <tt>NominalDiffTime</tt> and <tt>DiffTime</tt>:
--   
--   <ul>
--   <li><i><tt>%w</tt></i> total whole weeks</li>
--   <li><i><tt>%d</tt></i> total whole days</li>
--   <li><i><tt>%D</tt></i> whole days of week</li>
--   <li><i><tt>%h</tt></i> total whole hours</li>
--   <li><i><tt>%H</tt></i> whole hours of day</li>
--   <li><i><tt>%m</tt></i> total whole minutes</li>
--   <li><i><tt>%M</tt></i> whole minutes of hour</li>
--   <li><i><tt>%s</tt></i> total whole seconds</li>
--   <li><i><tt>%Es</tt></i> total seconds, with decimal point and up to
--   &lt;width&gt; (default 12) decimal places, without trailing zeros. For
--   a whole number of seconds, <tt>%Es</tt> omits the decimal point unless
--   padding is specified.</li>
--   <li><i><tt>%0Es</tt></i> total seconds, with decimal point and
--   &lt;width&gt; (default 12) decimal places.</li>
--   <li><i><tt>%S</tt></i> whole seconds of minute</li>
--   <li><i><tt>%ES</tt></i> seconds of minute, with decimal point and up
--   to &lt;width&gt; (default 12) decimal places, without trailing zeros.
--   For a whole number of seconds, <tt>%ES</tt> omits the decimal point
--   unless padding is specified.</li>
--   <li><i><tt>%0ES</tt></i> seconds of minute as two digits, with decimal
--   point and &lt;width&gt; (default 12) decimal places.</li>
--   </ul>
--   
--   <h3><tt>CalendarDiffDays</tt></h3>
--   
--   For <tt>CalendarDiffDays</tt> (and <tt>CalendarDiffTime</tt>):
--   
--   <ul>
--   <li><i><tt>%y</tt></i> total years</li>
--   <li><i><tt>%b</tt></i> total months</li>
--   <li><i><tt>%B</tt></i> months of year</li>
--   <li><i><tt>%w</tt></i> total weeks, not including months</li>
--   <li><i><tt>%d</tt></i> total days, not including months</li>
--   <li><i><tt>%D</tt></i> days of week</li>
--   </ul>
--   
--   <h3><tt>CalendarDiffTime</tt></h3>
--   
--   For <tt>CalendarDiffTime</tt>:
--   
--   <ul>
--   <li><i><tt>%h</tt></i> total hours, not including months</li>
--   <li><i><tt>%H</tt></i> hours of day</li>
--   <li><i><tt>%m</tt></i> total minutes, not including months</li>
--   <li><i><tt>%M</tt></i> minutes of hour</li>
--   <li><i><tt>%s</tt></i> total whole seconds, not including months</li>
--   <li><i><tt>%Es</tt></i> total seconds, not including months, with
--   decimal point and up to &lt;width&gt; (default 12) decimal places,
--   without trailing zeros. For a whole number of seconds, <tt>%Es</tt>
--   omits the decimal point unless padding is specified.</li>
--   <li><i><tt>%0Es</tt></i> total seconds, not including months, with
--   decimal point and &lt;width&gt; (default 12) decimal places.</li>
--   <li><i><tt>%S</tt></i> whole seconds of minute</li>
--   <li><i><tt>%ES</tt></i> seconds of minute, with decimal point and up
--   to &lt;width&gt; (default 12) decimal places, without trailing zeros.
--   For a whole number of seconds, <tt>%ES</tt> omits the decimal point
--   unless padding is specified.</li>
--   <li><i><tt>%0ES</tt></i> seconds of minute as two digits, with decimal
--   point and &lt;width&gt; (default 12) decimal places.</li>
--   </ul>
formatTime :: FormatTime t => TimeLocale -> String -> t -> String

-- | Parses a time value given a format string. Missing information will be
--   derived from 1970-01-01 00:00 UTC (which was a Thursday). Supports the
--   same %-codes as <tt>formatTime</tt>, including <tt>%-</tt>,
--   <tt>%_</tt> and <tt>%0</tt> modifiers, however padding widths are not
--   supported. Case is not significant in the input string. Some
--   variations in the input are accepted:
--   
--   <ul>
--   <li><i><tt>%z</tt> <tt>%Ez</tt></i> accepts any of <tt>±HHMM</tt> or
--   <tt>±HH:MM</tt>.</li>
--   <li><i><tt>%Z</tt> <tt>%EZ</tt></i> accepts any string of letters, or
--   any of the formats accepted by <tt>%z</tt>.</li>
--   <li><i><tt>%0Y</tt></i> accepts exactly four digits.</li>
--   <li><i><tt>%0G</tt></i> accepts exactly four digits.</li>
--   <li><i><tt>%0C</tt></i> accepts exactly two digits.</li>
--   <li><i><tt>%0f</tt></i> accepts exactly two digits.</li>
--   </ul>
--   
--   For example, to parse a date in YYYY-MM-DD format, while allowing the
--   month and date to have optional leading zeros (notice the <tt>-</tt>
--   modifier used for <tt>%m</tt> and <tt>%d</tt>):
--   
--   <pre>
--   Prelude Data.Time&gt; parseTimeM True defaultTimeLocale "%Y-%-m-%-d" "2010-3-04" :: Maybe Day
--   Just 2010-03-04
--   </pre>
parseTimeM :: (MonadFail m, ParseTime t) => Bool -> TimeLocale -> String -> String -> m t
tshow :: Show a => a -> Text
tlshow :: Show a => a -> LText

-- | Convert a character to lower case.
--   
--   Character-based case conversion is lossy in comparison to string-based
--   <a>toLower</a>. For instance, İ will be converted to i, instead of i̇.
charToLower :: Char -> Char

-- | Convert a character to upper case.
--   
--   Character-based case conversion is lossy in comparison to string-based
--   <a>toUpper</a>. For instance, ß won't be converted to SS.
charToUpper :: Char -> Char
readMay :: (Element c ~ Char, MonoFoldable c, Read a) => c -> Maybe a
asByteString :: ByteString -> ByteString
asLByteString :: LByteString -> LByteString
asHashMap :: HashMap k v -> HashMap k v
asHashSet :: HashSet a -> HashSet a
asText :: Text -> Text
asLText :: LText -> LText
asList :: [a] -> [a]
asMap :: Map k v -> Map k v
asIntMap :: IntMap v -> IntMap v
asMaybe :: Maybe a -> Maybe a
asSet :: Set a -> Set a
asIntSet :: IntSet -> IntSet
asVector :: Vector a -> Vector a
asUVector :: UVector a -> UVector a
asSVector :: SVector a -> SVector a
asString :: [Char] -> [Char]

-- | Originally <a>yield</a>.
yieldThread :: MonadIO m => m ()

-- | same behavior as <a>nub</a>, but requires <a>Hashable</a> &amp;
--   <a>Eq</a> and is <tt>O(n log n)</tt>
--   
--   <a>https://github.com/nh2/haskell-ordnub</a>
hashNub :: (Hashable a, Eq a) => [a] -> [a]

-- | Synonym for <a>orElse</a>.
orElseSTM :: STM a -> STM a -> STM a

-- | Only perform the action if the predicate returns <a>True</a>.
--   
--   Since 0.9.2
whenM :: Monad m => m Bool -> m () -> m ()

-- | Only perform the action if the predicate returns <a>False</a>.
--   
--   Since 0.9.2
unlessM :: Monad m => m Bool -> m () -> m ()

-- | Force type to a <a>DList</a>
--   
--   Since 0.11.0
asDList :: DList a -> DList a

-- | Synonym for <a>apply</a>
--   
--   Since 0.11.0
applyDList :: DList a -> [a] -> [a]

-- | <a>&amp;&amp;</a> lifted to an Applicative.
(<&&>) :: Applicative a => a Bool -> a Bool -> a Bool
infixr 3 <&&>

-- | <a>||</a> lifted to an Applicative.
(<||>) :: Applicative a => a Bool -> a Bool -> a Bool
infixr 2 <||>

-- | Convert a <a>ByteString</a> into a storable <a>Vector</a>.
toByteVector :: ByteString -> SVector Word8

-- | Convert a storable <a>Vector</a> into a <a>ByteString</a>.
fromByteVector :: SVector Word8 -> ByteString

-- | <a>waitSTM</a> for any <a>MonadIO</a>
waitAsync :: MonadIO m => Async a -> m a

-- | <a>pollSTM</a> for any <a>MonadIO</a>
pollAsync :: MonadIO m => Async a -> m (Maybe (Either SomeException a))

-- | <a>waitCatchSTM</a> for any <a>MonadIO</a>
waitCatchAsync :: MonadIO m => Async a -> m (Either SomeException a)

-- | <a>link</a> generalized to any <a>MonadIO</a>
linkAsync :: MonadIO m => Async a -> m ()

-- | <a>link2</a> generalized to any <a>MonadIO</a>
link2Async :: MonadIO m => Async a -> Async b -> m ()

-- | Strictly read a file into a <a>Text</a> using a UTF-8 character
--   encoding. In the event of a character encoding error, a Unicode
--   replacement character will be used (a.k.a., <tt>lenientDecode</tt>).
readFileUtf8 :: MonadIO m => FilePath -> m Text

-- | Write a <a>Text</a> to a file using a UTF-8 character encoding.
writeFileUtf8 :: MonadIO m => FilePath -> Text -> m ()

-- | Read a single chunk of data as a <a>ByteString</a> from the given
--   <a>Handle</a>.
--   
--   Under the surface, this uses <a>hGetSome</a> with the default chunk
--   size.
hGetChunk :: MonadIO m => Handle -> m ByteString
parseTime :: ParseTime t => TimeLocale -> String -> String -> Maybe t
waitSTM :: Async a -> STM a
pollSTM :: Async a -> STM (Maybe (Either SomeException a))
waitCatchSTM :: Async a -> STM (Either SomeException a)
asyncBound :: MonadUnliftIO m => m a -> m (Async a)
asyncOn :: MonadUnliftIO m => Int -> m a -> m (Async a)
asyncWithUnmask :: MonadUnliftIO m => ((forall b. () => m b -> m b) -> m a) -> m (Async a)
asyncOnWithUnmask :: MonadUnliftIO m => Int -> ((forall b. () => m b -> m b) -> m a) -> m (Async a)
withAsyncBound :: MonadUnliftIO m => m a -> (Async a -> m b) -> m b
withAsyncOn :: MonadUnliftIO m => Int -> m a -> (Async a -> m b) -> m b
withAsyncWithUnmask :: MonadUnliftIO m => ((forall c. () => m c -> m c) -> m a) -> (Async a -> m b) -> m b
withAsyncOnWithUnmask :: MonadUnliftIO m => Int -> ((forall c. () => m c -> m c) -> m a) -> (Async a -> m b) -> m b
cancelWith :: (Exception e, MonadIO m) => Async a -> e -> m ()
waitAnyCatch :: MonadIO m => [Async a] -> m (Async a, Either SomeException a)
waitAnyCatchSTM :: [Async a] -> STM (Async a, Either SomeException a)
waitAnyCatchCancel :: MonadIO m => [Async a] -> m (Async a, Either SomeException a)
waitAny :: MonadIO m => [Async a] -> m (Async a, a)
waitAnySTM :: [Async a] -> STM (Async a, a)
waitAnyCancel :: MonadIO m => [Async a] -> m (Async a, a)
waitEitherCatch :: MonadIO m => Async a -> Async b -> m (Either (Either SomeException a) (Either SomeException b))
waitEitherCatchSTM :: Async a -> Async b -> STM (Either (Either SomeException a) (Either SomeException b))
waitEitherCatchCancel :: MonadIO m => Async a -> Async b -> m (Either (Either SomeException a) (Either SomeException b))
waitEither :: MonadIO m => Async a -> Async b -> m (Either a b)
waitEitherSTM :: Async a -> Async b -> STM (Either a b)
waitEither_ :: MonadIO m => Async a -> Async b -> m ()
waitEitherSTM_ :: Async a -> Async b -> STM ()
waitEitherCancel :: MonadIO m => Async a -> Async b -> m (Either a b)
waitBoth :: MonadIO m => Async a -> Async b -> m (a, b)
waitBothSTM :: Async a -> Async b -> STM (a, b)
race :: MonadUnliftIO m => m a -> m b -> m (Either a b)
race_ :: MonadUnliftIO m => m a -> m b -> m ()
concurrently_ :: MonadUnliftIO m => m a -> m b -> m ()
mapConcurrently :: (MonadUnliftIO m, Traversable t) => (a -> m b) -> t a -> m (t b)
forConcurrently :: (MonadUnliftIO m, Traversable t) => t a -> (a -> m b) -> m (t b)
mapConcurrently_ :: (MonadUnliftIO m, Foldable f) => (a -> m b) -> f a -> m ()
forConcurrently_ :: (MonadUnliftIO m, Foldable f) => f a -> (a -> m b) -> m ()
replicateConcurrently :: MonadUnliftIO f => Int -> f a -> f [a]
replicateConcurrently_ :: (Applicative m, MonadUnliftIO m) => Int -> m a -> m ()

-- | Builds and returns a new instance of <a>TBQueue</a>.
newTBQueue :: Natural -> STM (TBQueue a)

-- | Write a value to a <a>TBQueue</a>; blocks if the queue is full.
writeTBQueue :: TBQueue a -> a -> STM ()

-- | Read the next value from the <a>TBQueue</a>.
readTBQueue :: TBQueue a -> STM a

-- | A version of <a>readTBQueue</a> which does not retry. Instead it
--   returns <tt>Nothing</tt> if no value is available.
tryReadTBQueue :: TBQueue a -> STM (Maybe a)

-- | Efficiently read the entire contents of a <a>TBQueue</a> into a list.
--   This function never retries.
flushTBQueue :: TBQueue a -> STM [a]

-- | Get the next value from the <tt>TBQueue</tt> without removing it,
--   retrying if the channel is empty.
peekTBQueue :: TBQueue a -> STM a

-- | A version of <a>peekTBQueue</a> which does not retry. Instead it
--   returns <tt>Nothing</tt> if no value is available.
tryPeekTBQueue :: TBQueue a -> STM (Maybe a)

-- | Put a data item back onto a channel, where it will be the next item
--   read. Blocks if the queue is full.
unGetTBQueue :: TBQueue a -> a -> STM ()

-- | Return the length of a <a>TBQueue</a>.
lengthTBQueue :: TBQueue a -> STM Natural

-- | Returns <a>True</a> if the supplied <a>TBQueue</a> is empty.
isEmptyTBQueue :: TBQueue a -> STM Bool

-- | Returns <a>True</a> if the supplied <a>TBQueue</a> is full.
isFullTBQueue :: TBQueue a -> STM Bool

-- | Build and return a new instance of <a>TChan</a>
newTChan :: STM (TChan a)

-- | Create a write-only <a>TChan</a>. More precisely, <a>readTChan</a>
--   will <a>retry</a> even after items have been written to the channel.
--   The only way to read a broadcast channel is to duplicate it with
--   <a>dupTChan</a>.
--   
--   Consider a server that broadcasts messages to clients:
--   
--   <pre>
--   serve :: TChan Message -&gt; Client -&gt; IO loop
--   serve broadcastChan client = do
--       myChan &lt;- dupTChan broadcastChan
--       forever $ do
--           message &lt;- readTChan myChan
--           send client message
--   </pre>
--   
--   The problem with using <a>newTChan</a> to create the broadcast channel
--   is that if it is only written to and never read, items will pile up in
--   memory. By using <a>newBroadcastTChan</a> to create the broadcast
--   channel, items can be garbage collected after clients have seen them.
newBroadcastTChan :: STM (TChan a)

-- | Write a value to a <a>TChan</a>.
writeTChan :: TChan a -> a -> STM ()

-- | Read the next value from the <a>TChan</a>.
readTChan :: TChan a -> STM a

-- | A version of <a>readTChan</a> which does not retry. Instead it returns
--   <tt>Nothing</tt> if no value is available.
tryReadTChan :: TChan a -> STM (Maybe a)

-- | Get the next value from the <tt>TChan</tt> without removing it,
--   retrying if the channel is empty.
peekTChan :: TChan a -> STM a

-- | A version of <a>peekTChan</a> which does not retry. Instead it returns
--   <tt>Nothing</tt> if no value is available.
tryPeekTChan :: TChan a -> STM (Maybe a)

-- | Duplicate a <a>TChan</a>: the duplicate channel begins empty, but data
--   written to either channel from then on will be available from both.
--   Hence this creates a kind of broadcast channel, where data written by
--   anyone is seen by everyone else.
dupTChan :: TChan a -> STM (TChan a)

-- | Put a data item back onto a channel, where it will be the next item
--   read.
unGetTChan :: TChan a -> a -> STM ()

-- | Returns <a>True</a> if the supplied <a>TChan</a> is empty.
isEmptyTChan :: TChan a -> STM Bool

-- | Clone a <a>TChan</a>: similar to dupTChan, but the cloned channel
--   starts with the same content available as the original channel.
cloneTChan :: TChan a -> STM (TChan a)

-- | Create a <a>TMVar</a> which contains the supplied value.
newTMVar :: a -> STM (TMVar a)

-- | Create a <a>TMVar</a> which is initially empty.
newEmptyTMVar :: STM (TMVar a)
newEmptyTMVarIO :: MonadIO m => m (TMVar a)

-- | Return the contents of the <a>TMVar</a>. If the <a>TMVar</a> is
--   currently empty, the transaction will <a>retry</a>. After a
--   <a>takeTMVar</a>, the <a>TMVar</a> is left empty.
takeTMVar :: TMVar a -> STM a

-- | A version of <a>takeTMVar</a> that does not <a>retry</a>. The
--   <a>tryTakeTMVar</a> function returns <a>Nothing</a> if the
--   <a>TMVar</a> was empty, or <tt><a>Just</a> a</tt> if the <a>TMVar</a>
--   was full with contents <tt>a</tt>. After <a>tryTakeTMVar</a>, the
--   <a>TMVar</a> is left empty.
tryTakeTMVar :: TMVar a -> STM (Maybe a)

-- | Put a value into a <a>TMVar</a>. If the <a>TMVar</a> is currently
--   full, <a>putTMVar</a> will <a>retry</a>.
putTMVar :: TMVar a -> a -> STM ()

-- | A version of <a>putTMVar</a> that does not <a>retry</a>. The
--   <a>tryPutTMVar</a> function attempts to put the value <tt>a</tt> into
--   the <a>TMVar</a>, returning <a>True</a> if it was successful, or
--   <a>False</a> otherwise.
tryPutTMVar :: TMVar a -> a -> STM Bool

-- | This is a combination of <a>takeTMVar</a> and <a>putTMVar</a>; ie. it
--   takes the value from the <a>TMVar</a>, puts it back, and also returns
--   it.
readTMVar :: TMVar a -> STM a

-- | A version of <a>readTMVar</a> which does not retry. Instead it returns
--   <tt>Nothing</tt> if no value is available.
tryReadTMVar :: TMVar a -> STM (Maybe a)

-- | Swap the contents of a <a>TMVar</a> for a new value.
swapTMVar :: TMVar a -> a -> STM a

-- | Non-blocking write of a new value to a <a>TMVar</a> Puts if empty.
--   Replaces if populated.
writeTMVar :: TMVar a -> a -> STM ()

-- | Check whether a given <a>TMVar</a> is empty.
isEmptyTMVar :: TMVar a -> STM Bool
mkWeakTMVar :: MonadUnliftIO m => TMVar a -> m () -> m (Weak (TMVar a))

-- | Build and returns a new instance of <a>TQueue</a>
newTQueue :: STM (TQueue a)

-- | Write a value to a <a>TQueue</a>.
writeTQueue :: TQueue a -> a -> STM ()

-- | Read the next value from the <a>TQueue</a>.
readTQueue :: TQueue a -> STM a

-- | A version of <a>readTQueue</a> which does not retry. Instead it
--   returns <tt>Nothing</tt> if no value is available.
tryReadTQueue :: TQueue a -> STM (Maybe a)

-- | Get the next value from the <tt>TQueue</tt> without removing it,
--   retrying if the channel is empty.
peekTQueue :: TQueue a -> STM a

-- | A version of <a>peekTQueue</a> which does not retry. Instead it
--   returns <tt>Nothing</tt> if no value is available.
tryPeekTQueue :: TQueue a -> STM (Maybe a)

-- | Put a data item back onto a channel, where it will be the next item
--   read.
unGetTQueue :: TQueue a -> a -> STM ()

-- | Returns <a>True</a> if the supplied <a>TQueue</a> is empty.
isEmptyTQueue :: TQueue a -> STM Bool

-- | Mutate the contents of a <a>TVar</a>. <i>N.B.</i>, this version is
--   non-strict.
modifyTVar :: TVar a -> (a -> a) -> STM ()

-- | Strict version of <a>modifyTVar</a>.
modifyTVar' :: TVar a -> (a -> a) -> STM ()

-- | Like <a>modifyTVar'</a> but the function is a simple state transition
--   that can return a side value which is passed on as the result of the
--   <a>STM</a>.
stateTVar :: TVar s -> (s -> (a, s)) -> STM a

-- | Swap the contents of a <a>TVar</a> for a new value.
swapTVar :: TVar a -> a -> STM a
mkWeakTVar :: MonadUnliftIO m => TVar a -> m () -> m (Weak (TVar a))
catchDeep :: (MonadUnliftIO m, Exception e, NFData a) => m a -> (e -> m a) -> m a
catchAnyDeep :: (NFData a, MonadUnliftIO m) => m a -> (SomeException -> m a) -> m a
catchSyncOrAsync :: (MonadUnliftIO m, Exception e) => m a -> (e -> m a) -> m a
handleIO :: MonadUnliftIO m => (IOException -> m a) -> m a -> m a
handleAny :: MonadUnliftIO m => (SomeException -> m a) -> m a -> m a
handleDeep :: (MonadUnliftIO m, Exception e, NFData a) => (e -> m a) -> m a -> m a
handleAnyDeep :: (MonadUnliftIO m, NFData a) => (SomeException -> m a) -> m a -> m a
handleSyncOrAsync :: (MonadUnliftIO m, Exception e) => (e -> m a) -> m a -> m a
tryAny :: MonadUnliftIO m => m a -> m (Either SomeException a)
tryDeep :: (MonadUnliftIO m, Exception e, NFData a) => m a -> m (Either e a)
tryAnyDeep :: (MonadUnliftIO m, NFData a) => m a -> m (Either SomeException a)
trySyncOrAsync :: (MonadUnliftIO m, Exception e) => m a -> m (Either e a)
pureTry :: a -> Either SomeException a
pureTryDeep :: NFData a => a -> Either SomeException a
catchesDeep :: (MonadUnliftIO m, NFData a) => m a -> [Handler m a] -> m a
evaluateDeep :: (MonadIO m, NFData a) => a -> m a
bracketOnError_ :: MonadUnliftIO m => m a -> m b -> m c -> m c
withException :: (MonadUnliftIO m, Exception e) => m a -> (e -> m b) -> m a
toSyncException :: Exception e => e -> SomeException
toAsyncException :: Exception e => e -> SomeException
fromExceptionUnwrap :: Exception e => SomeException -> Maybe e
isSyncException :: Exception e => e -> Bool
isAsyncException :: Exception e => e -> Bool
throwString :: (MonadIO m, HasCallStack) => String -> m a
stringException :: HasCallStack => String -> StringException
impureThrow :: Exception e => e -> a
fromEither :: (Exception e, MonadIO m) => Either e a -> m a
fromEitherIO :: (Exception e, MonadIO m) => IO (Either e a) -> m a
fromEitherM :: (Exception e, MonadIO m) => m (Either e a) -> m a
mapExceptionM :: (Exception e1, Exception e2, MonadUnliftIO m) => (e1 -> e2) -> m a -> m a
conc :: m a -> Conc m a
runConc :: MonadUnliftIO m => Conc m a -> m a
pooledMapConcurrentlyN :: (MonadUnliftIO m, Traversable t) => Int -> (a -> m b) -> t a -> m (t b)
pooledMapConcurrently :: (MonadUnliftIO m, Traversable t) => (a -> m b) -> t a -> m (t b)
pooledForConcurrentlyN :: (MonadUnliftIO m, Traversable t) => Int -> t a -> (a -> m b) -> m (t b)
pooledForConcurrently :: (MonadUnliftIO m, Traversable t) => t a -> (a -> m b) -> m (t b)
pooledMapConcurrentlyN_ :: (MonadUnliftIO m, Foldable f) => Int -> (a -> m b) -> f a -> m ()
pooledMapConcurrently_ :: (MonadUnliftIO m, Foldable f) => (a -> m b) -> f a -> m ()
pooledForConcurrently_ :: (MonadUnliftIO m, Foldable f) => f a -> (a -> m b) -> m ()
pooledForConcurrentlyN_ :: (MonadUnliftIO m, Foldable t) => Int -> t a -> (a -> m b) -> m ()
pooledReplicateConcurrentlyN :: MonadUnliftIO m => Int -> Int -> m a -> m [a]
pooledReplicateConcurrently :: MonadUnliftIO m => Int -> m a -> m [a]
pooledReplicateConcurrentlyN_ :: MonadUnliftIO m => Int -> Int -> m a -> m ()
pooledReplicateConcurrently_ :: MonadUnliftIO m => Int -> m a -> m ()
runMemoized :: MonadIO m => Memoized a -> m a
memoizeRef :: MonadUnliftIO m => m a -> m (Memoized a)
memoizeMVar :: MonadUnliftIO m => m a -> m (Memoized a)
withQSem :: MonadUnliftIO m => QSem -> m a -> m a
withQSemN :: MonadUnliftIO m => QSemN -> Int -> m a -> m a
retrySTM :: STM a
checkSTM :: Bool -> STM ()
withSystemTempFile :: MonadUnliftIO m => String -> (FilePath -> Handle -> m a) -> m a
withSystemTempDirectory :: MonadUnliftIO m => String -> (FilePath -> m a) -> m a
askUnliftIO :: MonadUnliftIO m => m (UnliftIO m)
askRunInIO :: MonadUnliftIO m => m (m a -> IO a)
withUnliftIO :: MonadUnliftIO m => (UnliftIO m -> IO a) -> m a
toIO :: MonadUnliftIO m => m a -> m (IO a)
wrappedWithRunInIO :: MonadUnliftIO n => (n b -> m b) -> (forall a. () => m a -> n a) -> ((forall a. () => m a -> IO a) -> IO b) -> m b
liftIOOp :: MonadUnliftIO m => (IO a -> IO b) -> m a -> m b
asIORef :: IORef a -> IORef a
asSTRef :: STRef s a -> STRef s a
asMutVar :: MutVar s a -> MutVar s a
asBRef :: BRef s a -> BRef s a
asDLList :: DLList s a -> DLList s a
asUDeque :: UDeque s a -> UDeque s a
asSDeque :: SDeque s a -> SDeque s a
asBDeque :: BDeque s a -> BDeque s a
asPRef :: PRef s a -> PRef s a
asSRef :: SRef s a -> SRef s a
asURef :: URef s a -> URef s a
newTBChan :: Int -> STM (TBChan a)
newTBChanIO :: Int -> IO (TBChan a)
readTBChan :: TBChan a -> STM a
tryReadTBChan :: TBChan a -> STM (Maybe a)
peekTBChan :: TBChan a -> STM a
tryPeekTBChan :: TBChan a -> STM (Maybe a)
writeTBChan :: TBChan a -> a -> STM ()
tryWriteTBChan :: TBChan a -> a -> STM Bool
unGetTBChan :: TBChan a -> a -> STM ()
isEmptyTBChan :: TBChan a -> STM Bool
isFullTBChan :: TBChan a -> STM Bool
estimateFreeSlotsTBChan :: TBChan a -> STM Int
freeSlotsTBChan :: TBChan a -> STM Int
newTBMChan :: Int -> STM (TBMChan a)
newTBMChanIO :: Int -> IO (TBMChan a)
readTBMChan :: TBMChan a -> STM (Maybe a)
tryReadTBMChan :: TBMChan a -> STM (Maybe (Maybe a))
peekTBMChan :: TBMChan a -> STM (Maybe a)
tryPeekTBMChan :: TBMChan a -> STM (Maybe (Maybe a))
writeTBMChan :: TBMChan a -> a -> STM ()
tryWriteTBMChan :: TBMChan a -> a -> STM (Maybe Bool)
unGetTBMChan :: TBMChan a -> a -> STM ()
closeTBMChan :: TBMChan a -> STM ()
isClosedTBMChan :: TBMChan a -> STM Bool
isEmptyTBMChan :: TBMChan a -> STM Bool
isFullTBMChan :: TBMChan a -> STM Bool
estimateFreeSlotsTBMChan :: TBMChan a -> STM Int
freeSlotsTBMChan :: TBMChan a -> STM Int
newTBMQueue :: Int -> STM (TBMQueue a)
newTBMQueueIO :: Int -> IO (TBMQueue a)
readTBMQueue :: TBMQueue a -> STM (Maybe a)
tryReadTBMQueue :: TBMQueue a -> STM (Maybe (Maybe a))
peekTBMQueue :: TBMQueue a -> STM (Maybe a)
tryPeekTBMQueue :: TBMQueue a -> STM (Maybe (Maybe a))
writeTBMQueue :: TBMQueue a -> a -> STM ()
tryWriteTBMQueue :: TBMQueue a -> a -> STM (Maybe Bool)
unGetTBMQueue :: TBMQueue a -> a -> STM ()
closeTBMQueue :: TBMQueue a -> STM ()
isClosedTBMQueue :: TBMQueue a -> STM Bool
isEmptyTBMQueue :: TBMQueue a -> STM Bool
isFullTBMQueue :: TBMQueue a -> STM Bool
estimateFreeSlotsTBMQueue :: TBMQueue a -> STM Int
freeSlotsTBMQueue :: TBMQueue a -> STM Int
newTMChan :: STM (TMChan a)
newTMChanIO :: IO (TMChan a)
newBroadcastTMChan :: STM (TMChan a)
newBroadcastTMChanIO :: IO (TMChan a)
dupTMChan :: TMChan a -> STM (TMChan a)
readTMChan :: TMChan a -> STM (Maybe a)
tryReadTMChan :: TMChan a -> STM (Maybe (Maybe a))
peekTMChan :: TMChan a -> STM (Maybe a)
tryPeekTMChan :: TMChan a -> STM (Maybe (Maybe a))
writeTMChan :: TMChan a -> a -> STM ()
unGetTMChan :: TMChan a -> a -> STM ()
closeTMChan :: TMChan a -> STM ()
isClosedTMChan :: TMChan a -> STM Bool
isEmptyTMChan :: TMChan a -> STM Bool
newTMQueue :: STM (TMQueue a)
newTMQueueIO :: IO (TMQueue a)
readTMQueue :: TMQueue a -> STM (Maybe a)
tryReadTMQueue :: TMQueue a -> STM (Maybe (Maybe a))
peekTMQueue :: TMQueue a -> STM (Maybe a)
tryPeekTMQueue :: TMQueue a -> STM (Maybe (Maybe a))
writeTMQueue :: TMQueue a -> a -> STM ()
unGetTMQueue :: TMQueue a -> a -> STM ()
closeTMQueue :: TMQueue a -> STM ()
isClosedTMQueue :: TMQueue a -> STM Bool
isEmptyTMQueue :: TMQueue a -> STM Bool
newMutVar :: PrimMonad m => a -> m (MutVar (PrimState m) a)
readMutVar :: PrimMonad m => MutVar (PrimState m) a -> m a
writeMutVar :: PrimMonad m => MutVar (PrimState m) a -> a -> m ()
atomicModifyMutVar :: PrimMonad m => MutVar (PrimState m) a -> (a -> (a, b)) -> m b
atomicModifyMutVar' :: PrimMonad m => MutVar (PrimState m) a -> (a -> (a, b)) -> m b
modifyMutVar :: PrimMonad m => MutVar (PrimState m) a -> (a -> a) -> m ()
modifyMutVar' :: PrimMonad m => MutVar (PrimState m) a -> (a -> a) -> m ()

-- | <tt><a>replaceElem</a> old new</tt> replaces all <tt>old</tt> elements
--   with <tt>new</tt>.
replaceElem :: (MonoFunctor mono, Eq (Element mono)) => Element mono -> Element mono -> mono -> mono
replaceElemStrictText :: Char -> Char -> Text -> Text
replaceElemLazyText :: Char -> Char -> Text -> Text

-- | Safe version of <a>headEx</a>.
--   
--   Returns <a>Nothing</a> instead of throwing an exception when
--   encountering an empty monomorphic container.
headMay :: MonoFoldable mono => mono -> Maybe (Element mono)

-- | Safe version of <a>lastEx</a>.
--   
--   Returns <a>Nothing</a> instead of throwing an exception when
--   encountering an empty monomorphic container.
lastMay :: MonoFoldable mono => mono -> Maybe (Element mono)

-- | <a>osum</a> computes the sum of the numbers of a monomorphic
--   container.
osum :: (MonoFoldable mono, Num (Element mono)) => mono -> Element mono

-- | <a>oproduct</a> computes the product of the numbers of a monomorphic
--   container.
oproduct :: (MonoFoldable mono, Num (Element mono)) => mono -> Element mono

-- | Are <b>all</b> of the elements <a>True</a>?
oand :: (Element mono ~ Bool, MonoFoldable mono) => mono -> Bool

-- | Are <b>any</b> of the elements <a>True</a>?
oor :: (Element mono ~ Bool, MonoFoldable mono) => mono -> Bool

-- | Synonym for <a>ofoldMap</a>
oconcatMap :: (MonoFoldable mono, Monoid m) => (Element mono -> m) -> mono -> m

-- | Monoidally combine all values in the container
ofold :: (MonoFoldable mono, Monoid (Element mono)) => mono -> Element mono

-- | Synonym for <a>ofold</a>
oconcat :: (MonoFoldable mono, Monoid (Element mono)) => mono -> Element mono

-- | Synonym for <a>ofoldlM</a>
ofoldM :: (MonoFoldable mono, Monad m) => (a -> Element mono -> m a) -> a -> mono -> m a

-- | Perform all actions in the given container
osequence_ :: (Applicative m, MonoFoldable mono, Element mono ~ m ()) => mono -> m ()

-- | Get the minimum element of a monomorphic container.
--   
--   Note: this is a partial function. On an empty <a>MonoFoldable</a>, it
--   will throw an exception.
--   
--   <i>See <a>maximum</a> from <a>Data.NonNull</a> for a total version of
--   this function.</i>
maximumEx :: (MonoFoldable mono, Ord (Element mono)) => mono -> Element mono

-- | Get the maximum element of a monomorphic container.
--   
--   Note: this is a partial function. On an empty <a>MonoFoldable</a>, it
--   will throw an exception.
--   
--   <i>See <a>minimum</a> from <a>Data.NonNull</a> for a total version of
--   this function.</i>
minimumEx :: (MonoFoldable mono, Ord (Element mono)) => mono -> Element mono

-- | Safe version of <a>maximumEx</a>.
--   
--   Returns <a>Nothing</a> instead of throwing an exception when
--   encountering an empty monomorphic container.
maximumMay :: (MonoFoldable mono, Ord (Element mono)) => mono -> Maybe (Element mono)

-- | Safe version of <a>maximumByEx</a>.
--   
--   Returns <a>Nothing</a> instead of throwing an exception when
--   encountering an empty monomorphic container.
maximumByMay :: MonoFoldable mono => (Element mono -> Element mono -> Ordering) -> mono -> Maybe (Element mono)

-- | Safe version of <a>minimumEx</a>.
--   
--   Returns <a>Nothing</a> instead of throwing an exception when
--   encountering an empty monomorphic container.
minimumMay :: (MonoFoldable mono, Ord (Element mono)) => mono -> Maybe (Element mono)

-- | Safe version of <a>minimumByEx</a>.
--   
--   Returns <a>Nothing</a> instead of throwing an exception when
--   encountering an empty monomorphic container.
minimumByMay :: MonoFoldable mono => (Element mono -> Element mono -> Ordering) -> mono -> Maybe (Element mono)

-- | <a>ofor</a> is <a>otraverse</a> with its arguments flipped.
ofor :: (MonoTraversable mono, Applicative f) => mono -> (Element mono -> f (Element mono)) -> f mono

-- | <a>oforM</a> is <a>omapM</a> with its arguments flipped.
oforM :: (MonoTraversable mono, Applicative f) => mono -> (Element mono -> f (Element mono)) -> f mono

-- | A strict left fold, together with an unwrap function.
--   
--   This is convenient when the accumulator value is not the same as the
--   final expected type. It is provided mainly for integration with the
--   <tt>foldl</tt> package, to be used in conjunction with
--   <tt>purely</tt>.
ofoldlUnwrap :: MonoFoldable mono => (x -> Element mono -> x) -> x -> (x -> b) -> mono -> b

-- | A monadic strict left fold, together with an unwrap function.
--   
--   Similar to <tt>foldlUnwrap</tt>, but allows monadic actions. To be
--   used with <tt>impurely</tt> from <tt>foldl</tt>.
ofoldMUnwrap :: (Monad m, MonoFoldable mono) => (x -> Element mono -> m x) -> m x -> (x -> m b) -> mono -> m b

-- | <tt>intercalate</tt> <tt>seq seqs</tt> inserts <tt>seq</tt> in between
--   <tt>seqs</tt> and concatenates the result.
ointercalate :: (MonoFoldable mono, Monoid (Element mono)) => Element mono -> mono -> Element mono

-- | Unwraps a <a>WrappedMono</a>.
unwrapMono :: WrappedMono mono a -> mono

-- | Synonym for <a>olength64</a>
length64 :: MonoFoldable mono => mono -> Int64

-- | Synonym for <a>ofoldMap1Ex</a>
foldMap1Ex :: (MonoFoldable mono, Semigroup m) => (Element mono -> m) -> mono -> m

-- | Synonym for <a>ofoldr1Ex</a>
foldr1Ex :: MonoFoldable mono => (Element mono -> Element mono -> Element mono) -> mono -> Element mono

-- | Synonym for <a>ofoldl1Ex'</a>
foldl1Ex' :: MonoFoldable mono => (Element mono -> Element mono -> Element mono) -> mono -> Element mono

-- | Synonym for <a>opoint</a>
point :: MonoPointed mono => Element mono -> mono

-- | Use <a>Data.List</a>'s implementation of <a>find</a>.
defaultFind :: MonoFoldable seq => (Element seq -> Bool) -> seq -> Maybe (Element seq)

-- | Use <a>Data.List</a>'s implementation of <a>intersperse</a>.
defaultIntersperse :: IsSequence seq => Element seq -> seq -> seq

-- | Use <a>Data.List</a>'s implementation of <a>reverse</a>.
defaultReverse :: IsSequence seq => seq -> seq

-- | Use <a>Data.List</a>'s implementation of <a>sortBy</a>.
defaultSortBy :: IsSequence seq => (Element seq -> Element seq -> Ordering) -> seq -> seq

-- | Use <a>splitWhen</a> from <a>Data.List.Split</a>
defaultSplitWhen :: IsSequence seq => (Element seq -> Bool) -> seq -> [seq]

-- | Sort a vector using an supplied element ordering function.
vectorSortBy :: Vector v e => (e -> e -> Ordering) -> v e -> v e

-- | Sort a vector.
vectorSort :: (Vector v e, Ord e) => v e -> v e

-- | Use <a>Data.List</a>'s <a>:</a> to prepend an element to a sequence.
defaultCons :: IsSequence seq => Element seq -> seq -> seq

-- | Use <a>Data.List</a>'s <a>++</a> to append an element to a sequence.
defaultSnoc :: IsSequence seq => seq -> Element seq -> seq

-- | like Data.List.tail, but an input of <a>mempty</a> returns
--   <a>mempty</a>
tailDef :: IsSequence seq => seq -> seq

-- | like Data.List.init, but an input of <a>mempty</a> returns
--   <a>mempty</a>
initDef :: IsSequence seq => seq -> seq

-- | <tt><a>splitElem</a></tt> splits a sequence into components delimited
--   by separator element. It's equivalent to <a>splitWhen</a> with
--   equality predicate:
--   
--   <pre>
--   splitElem sep === splitWhen (== sep)
--   </pre>
--   
--   Since 0.9.3
splitElem :: (IsSequence seq, Eq (Element seq)) => Element seq -> seq -> [seq]

-- | <tt><a>splitSeq</a></tt> splits a sequence into components delimited
--   by separator subsequence. <a>splitSeq</a> is the right inverse of
--   <tt>intercalate</tt>:
--   
--   <pre>
--   ointercalate x . splitSeq x === id
--   </pre>
--   
--   <a>splitElem</a> can be considered a special case of <a>splitSeq</a>
--   
--   <pre>
--   splitSeq (singleton sep) === splitElem sep
--   </pre>
--   
--   <tt><a>splitSeq</a> mempty</tt> is another special case: it splits
--   just before each element, and in line with <a>splitWhen</a> rules, it
--   has at least one output component:
--   
--   <pre>
--   &gt; <a>splitSeq</a> "" ""
--   [""]
--   &gt; <a>splitSeq</a> "" "a"
--   ["", "a"]
--   &gt; <a>splitSeq</a> "" "ab"
--   ["", "a", "b"]
--   </pre>
--   
--   Since 0.9.3
splitSeq :: (IsSequence seq, Eq (Element seq)) => seq -> seq -> [seq]

-- | <tt><a>replaceSeq</a> old new</tt> replaces all <tt>old</tt>
--   subsequences with <tt>new</tt>.
--   
--   <pre>
--   replaceSeq old new === ointercalate new . splitSeq old
--   </pre>
replaceSeq :: (IsSequence seq, Eq (Element seq)) => seq -> seq -> seq -> seq

-- | <a>dropPrefix</a> drops the given prefix from a sequence. It returns
--   the original sequence if the sequence doesn't start with the given
--   prefix.
--   
--   <pre>
--   &gt; <a>dropPrefix</a> "foo" "foobar"
--   "bar"
--   &gt; <a>dropPrefix</a> "abc" "foobar"
--   "foobar"
--   </pre>
dropPrefix :: (IsSequence seq, Eq (Element seq)) => seq -> seq -> seq

-- | <a>dropSuffix</a> drops the given suffix from a sequence. It returns
--   the original sequence if the sequence doesn't end with the given
--   suffix.
--   
--   <pre>
--   &gt; <a>dropSuffix</a> "bar" "foobar"
--   "foo"
--   &gt; <a>dropSuffix</a> "abc" "foobar"
--   "foobar"
--   </pre>
dropSuffix :: (IsSequence seq, Eq (Element seq)) => seq -> seq -> seq

-- | <a>ensurePrefix</a> will add a prefix to a sequence if it doesn't
--   exist, and otherwise have no effect.
--   
--   <pre>
--   &gt; <a>ensurePrefix</a> "foo" "foobar"
--   "foobar"
--   &gt; <a>ensurePrefix</a> "abc" "foobar"
--   "abcfoobar"
--   </pre>
ensurePrefix :: (Eq (Element seq), IsSequence seq) => seq -> seq -> seq

-- | Append a suffix to a sequence, unless it already has that suffix.
--   
--   <pre>
--   &gt; <a>ensureSuffix</a> "bar" "foobar"
--   "foobar"
--   &gt; <a>ensureSuffix</a> "abc" "foobar"
--   "foobarabc"
--   </pre>
ensureSuffix :: (Eq (Element seq), IsSequence seq) => seq -> seq -> seq

-- | Similar to standard <a>group</a>, but operates on the whole
--   collection, not just the consecutive items.
--   
--   Equivalent to <tt><a>groupAllOn</a> id</tt>
groupAll :: (IsSequence seq, Eq (Element seq)) => seq -> [seq]
splitElemStrictBS :: Word8 -> ByteString -> [ByteString]
stripPrefixStrictBS :: ByteString -> ByteString -> Maybe ByteString
stripSuffixStrictBS :: ByteString -> ByteString -> Maybe ByteString
splitSeqLazyBS :: Word8 -> ByteString -> [ByteString]
stripPrefixLazyBS :: ByteString -> ByteString -> Maybe ByteString
stripSuffixLazyBS :: ByteString -> ByteString -> Maybe ByteString
splitSeqStrictText :: Text -> Text -> [Text]
replaceSeqStrictText :: Text -> Text -> Text -> Text
splitSeqLazyText :: Text -> Text -> [Text]
replaceSeqLazyText :: Text -> Text -> Text -> Text

-- | Repack from one type to another, dropping to a list in the middle.
--   
--   <tt>repack = pack . unpack</tt>.
repack :: (MonoFoldable a, IsSequence b, Element a ~ Element b) => a -> b
textToBuilder :: ToBuilder Text builder => Text -> builder

-- | Map each element of a monomorphic container to a semigroup, and
--   combine the results.
--   
--   Safe version of <a>ofoldMap1Ex</a>, only works on monomorphic
--   containers wrapped in a <a>NonNull</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt; let xs = ncons ("hello", 1 :: <a>Integer</a>) [(" world", 2)]
--   &gt; <a>ofoldMap1</a> <a>fst</a> xs
--   "hello world"
--   </pre>
ofoldMap1 :: (MonoFoldable mono, Semigroup m) => (Element mono -> m) -> NonNull mono -> m

-- | Right-associative fold of a monomorphic container with no base
--   element.
--   
--   Safe version of <a>ofoldr1Ex</a>, only works on monomorphic containers
--   wrapped in a <a>NonNull</a>.
--   
--   <pre>
--   <a>foldr1</a> f = <a>Prelude</a>.<a>foldr1</a> f . <a>otoList</a>
--   </pre>
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt; let xs = ncons "a" ["b", "c"]
--   &gt; <a>ofoldr1</a> (++) xs
--   "abc"
--   </pre>
ofoldr1 :: MonoFoldable mono => (Element mono -> Element mono -> Element mono) -> NonNull mono -> Element mono

-- | Strict left-associative fold of a monomorphic container with no base
--   element.
--   
--   Safe version of <a>ofoldl1Ex'</a>, only works on monomorphic
--   containers wrapped in a <a>NonNull</a>.
--   
--   <pre>
--   <tt>foldl1'</tt> f = <a>Prelude</a>.<a>foldl1'</a> f . <a>otoList</a>
--   </pre>
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt; let xs = ncons "a" ["b", "c"]
--   &gt; <a>ofoldl1'</a> (++) xs
--   "abc"
--   </pre>
ofoldl1' :: MonoFoldable mono => (Element mono -> Element mono -> Element mono) -> NonNull mono -> Element mono

-- | <b>Safely</b> convert from an <b>unsafe</b> monomorphic container to a
--   <b>safe</b> non-null monomorphic container.
fromNullable :: MonoFoldable mono => mono -> Maybe (NonNull mono)

-- | <b>Unsafely</b> convert from an <b>unsafe</b> monomorphic container to
--   a <b>safe</b> non-null monomorphic container.
--   
--   Throws an exception if the monomorphic container is empty.
impureNonNull :: MonoFoldable mono => mono -> NonNull mono

-- | Old synonym for <a>impureNonNull</a>
nonNull :: MonoFoldable mono => mono -> NonNull mono

-- | Specializes <a>fromNonEmpty</a> to lists only.
toMinList :: NonEmpty a -> NonNull [a]

-- | Prepend an element to a <a>SemiSequence</a>, creating a non-null
--   <a>SemiSequence</a>.
--   
--   Generally this uses cons underneath. cons is not efficient for most
--   data structures.
--   
--   Alternatives:
--   
--   <ul>
--   <li>if you don't need to cons, use <a>fromNullable</a> or
--   <a>nonNull</a> if you can create your structure in one go.</li>
--   <li>if you need to cons, you might be able to start off with an
--   efficient data structure such as a <tt>NonEmpty</tt> List.
--   <a>fromNonEmpty</a> will convert that to your data structure using the
--   structure's fromList function.</li>
--   </ul>
ncons :: SemiSequence seq => Element seq -> seq -> NonNull seq

-- | Extract the first element of a sequence and the rest of the non-null
--   sequence if it exists.
nuncons :: IsSequence seq => NonNull seq -> (Element seq, Maybe (NonNull seq))

-- | Same as <a>nuncons</a> with no guarantee that the rest of the sequence
--   is non-null.
splitFirst :: IsSequence seq => NonNull seq -> (Element seq, seq)

-- | Equivalent to <tt><a>Data.Sequences</a>.<a>filter</a></tt>, but works
--   on non-nullable sequences.
nfilter :: IsSequence seq => (Element seq -> Bool) -> NonNull seq -> seq

-- | Equivalent to <tt><a>Data.Sequences</a>.<a>filterM</a></tt>, but works
--   on non-nullable sequences.
nfilterM :: (Monad m, IsSequence seq) => (Element seq -> m Bool) -> NonNull seq -> m seq

-- | Equivalent to <tt><a>Data.Sequences</a>.<a>replicate</a></tt>
--   
--   <tt>i</tt> must be <tt>&gt; 0</tt>
--   
--   <tt>i &lt;= 0</tt> is treated the same as providing <tt>1</tt>
nReplicate :: IsSequence seq => Index seq -> Element seq -> NonNull seq

-- | Join a monomorphic container, whose elements are <a>Semigroup</a>s,
--   together.
--   
--   Safe, only works on monomorphic containers wrapped in a
--   <a>NonNull</a>.
--   
--   <h4><b>Examples</b></h4>
--   
--   <pre>
--   &gt; let xs = ncons "a" ["b", "c"]
--   &gt; xs
--   <a>NonNull</a> {toNullable = ["a","b","c"]}
--   
--   &gt; <a>ofold1</a> xs
--   "abc"
--   </pre>
ofold1 :: (MonoFoldable mono, Semigroup (Element mono)) => NonNull mono -> Element mono

-- | <a>fmap</a> over the underlying container in a <a>NonNull</a>.
mapNonNull :: (Functor f, MonoFoldable (f b)) => (a -> b) -> NonNull (f a) -> NonNull (f b)
sayString :: MonadIO m => String -> m ()
sayShow :: (MonadIO m, Show a) => a -> m ()
sayErr :: MonadIO m => Text -> m ()
sayErrString :: MonadIO m => String -> m ()
sayErrShow :: (MonadIO m, Show a) => a -> m ()
hSay :: MonadIO m => Handle -> Text -> m ()
hSayString :: MonadIO m => Handle -> String -> m ()
hSayShow :: (MonadIO m, Show a) => Handle -> a -> m ()
hPutStrLn :: MonadIO m => Handle -> Text -> m ()
whenJust :: Monoid m => Maybe a -> (a -> m) -> m


-- | This module contains two things:
--   
--   <ol>
--   <li>Extension functions to libraries like GTK. These functions wrap up
--   some generic GTK functionality. They are not Termonad-specific.</li>
--   <li>Wrappers around functionality that is only specific to certain
--   versions of libraries like GTK or VTE.</li>
--   </ol>
--   
--   For instance, <a>terminalSetEnableSixelIfExists</a> is a wrapper
--   around <tt>terminalSetEnableSixel</tt>. Sixel support is only availble
--   in vte &gt;= 0.63, so if a user tries to compile Termonad with a
--   version of vte less than 0.63, this function won't do anything.
module Termonad.Gtk
objFromBuildUnsafe :: GObject o => Builder -> Text -> (ManagedPtr o -> o) -> IO o

-- | Unsafely creates a new <a>Application</a>. This calls <a>fail</a> if
--   it cannot create the <a>Application</a> for some reason.
--   
--   This can fail for different reasons, one of which being that
--   application name does not have a period in it.
appNew :: (HasCallStack, MonadIO m, MonadFail m) => Maybe Text -> [ApplicationFlags] -> m Application

-- | Tests to see if two GTK widgets point to the same thing. This should
--   only happen if they are actually the same thing.
widgetEq :: (MonadIO m, IsWidget a, IsWidget b) => a -> b -> m Bool

-- | Wrapper around <tt>terminalSetEnableSixel</tt>. The
--   <tt>terminalSetEnableSixel</tt> function is only available starting
--   with vte-0.63. This function has no effect when compiling against
--   previous versions of vte.
terminalSetEnableSixelIfExists :: (HasCallStack, MonadIO m, IsTerminal t) => t -> Bool -> m ()

module Termonad.Types

-- | A wrapper around a VTE <a>Terminal</a>. This also stores the process
--   ID of the process running on this terminal, as well as a <a>Unique</a>
--   that can be used for comparing terminals.
data TMTerm
TMTerm :: !Terminal -> !Int -> !Unique -> TMTerm

-- | The actual <a>Terminal</a>.
[term] :: TMTerm -> !Terminal

-- | The process ID of the process running in <a>term</a>.
[pid] :: TMTerm -> !Int

-- | A <a>Unique</a> for comparing different <a>TMTerm</a> for uniqueness.
[unique] :: TMTerm -> !Unique

-- | A container that holds everything in a given terminal window. The
--   <a>term</a> in the <a>TMTerm</a> is inside the
--   <a>tmNotebookTabTermContainer</a> <a>ScrolledWindow</a>. The notebook
--   tab <a>Label</a> is also available.
data TMNotebookTab
TMNotebookTab :: !ScrolledWindow -> !TMTerm -> !Label -> TMNotebookTab

-- | The <a>ScrolledWindow</a> holding the VTE <a>Terminal</a>.
[tmNotebookTabTermContainer] :: TMNotebookTab -> !ScrolledWindow

-- | The <a>Terminal</a> insidie the <a>ScrolledWindow</a>.
[tmNotebookTabTerm] :: TMNotebookTab -> !TMTerm

-- | The <a>Label</a> holding the title of the <a>Terminal</a> in the
--   <a>Notebook</a> tab.
[tmNotebookTabLabel] :: TMNotebookTab -> !Label

-- | This holds the GTK <a>Notebook</a> containing multiple tabs of
--   <a>Terminal</a>s. We keep a separate list of terminals in
--   <a>tmNotebookTabs</a>.
data TMNotebook
TMNotebook :: !Notebook -> !FocusList TMNotebookTab -> TMNotebook

-- | This is the GTK <a>Notebook</a> that holds multiple tabs of
--   <a>Terminal</a>s.
[tmNotebook] :: TMNotebook -> !Notebook

-- | A <a>FocusList</a> containing references to each individual
--   <a>TMNotebookTab</a>.
[tmNotebookTabs] :: TMNotebook -> !FocusList TMNotebookTab
data TMState'
TMState :: !Application -> !ApplicationWindow -> !TMNotebook -> !FontDescription -> !TMConfig -> TMState'
[tmStateApp] :: TMState' -> !Application
[tmStateAppWin] :: TMState' -> !ApplicationWindow
[tmStateNotebook] :: TMState' -> !TMNotebook
[tmStateFontDesc] :: TMState' -> !FontDescription
[tmStateConfig] :: TMState' -> !TMConfig
type TMState = MVar TMState'
createTMTerm :: Terminal -> Int -> Unique -> TMTerm
newTMTerm :: Terminal -> Int -> IO TMTerm
getFocusedTermFromState :: TMState -> IO (Maybe Terminal)
createTMNotebookTab :: Label -> ScrolledWindow -> TMTerm -> TMNotebookTab
createTMNotebook :: Notebook -> FocusList TMNotebookTab -> TMNotebook
createEmptyTMNotebook :: Notebook -> TMNotebook
notebookToList :: Notebook -> IO [Widget]
newTMState :: TMConfig -> Application -> ApplicationWindow -> TMNotebook -> FontDescription -> IO TMState
newEmptyTMState :: TMConfig -> Application -> ApplicationWindow -> Notebook -> FontDescription -> IO TMState
newTMStateSingleTerm :: TMConfig -> Application -> ApplicationWindow -> Notebook -> Label -> ScrolledWindow -> Terminal -> Int -> FontDescription -> IO TMState
traceShowMTMState :: TMState -> IO ()

-- | The font size for the Termonad terminal. There are two ways to set the
--   fontsize, corresponding to the two different ways to set the font size
--   in the Pango font rendering library.
--   
--   If you're not sure which to use, try <a>FontSizePoints</a> first and
--   see how it looks. It should generally correspond to font sizes you are
--   used to from other applications.
data FontSize

-- | This sets the font size based on "points". The conversion between a
--   point and an actual size depends on the system configuration and the
--   output device. The function <a>fontDescriptionSetSize</a> is used to
--   set the font size. See the documentation for that function for more
--   info.
FontSizePoints :: Int -> FontSize

-- | This sets the font size based on "device units". In general, this can
--   be thought of as one pixel. The function
--   <a>fontDescriptionSetAbsoluteSize</a> is used to set the font size.
--   See the documentation for that function for more info.
FontSizeUnits :: Double -> FontSize

-- | The default <a>FontSize</a> used if not specified.
--   
--   <pre>
--   &gt;&gt;&gt; defaultFontSize
--   FontSizePoints 12
--   </pre>
defaultFontSize :: FontSize

-- | Modify a <a>FontSize</a> by adding some value.
--   
--   <pre>
--   &gt;&gt;&gt; modFontSize 1 (FontSizePoints 13)
--   FontSizePoints 14
--   
--   &gt;&gt;&gt; modFontSize 1 (FontSizeUnits 9.0)
--   FontSizeUnits 10.0
--   </pre>
--   
--   You can reduce the font size by passing a negative value.
--   
--   <pre>
--   &gt;&gt;&gt; modFontSize (-2) (FontSizePoints 13)
--   FontSizePoints 11
--   </pre>
--   
--   If you try to create a font size less than 1, then the old font size
--   will be used.
--   
--   <pre>
--   &gt;&gt;&gt; modFontSize (-10) (FontSizePoints 5)
--   FontSizePoints 5
--   
--   &gt;&gt;&gt; modFontSize (-1) (FontSizeUnits 1.0)
--   FontSizeUnits 1.0
--   </pre>
modFontSize :: Int -> FontSize -> FontSize

-- | Settings for the font to be used in Termonad.
data FontConfig
FontConfig :: !Text -> !FontSize -> FontConfig

-- | The font family to use. Example: <tt>"DejaVu Sans Mono"</tt> or
--   <tt>"Source Code Pro"</tt>
[fontFamily] :: FontConfig -> !Text

-- | The font size.
[fontSize] :: FontConfig -> !FontSize

-- | The default <a>FontConfig</a> to use if not specified.
--   
--   <pre>
--   &gt;&gt;&gt; defaultFontConfig == FontConfig {fontFamily = "Monospace", fontSize = defaultFontSize}
--   True
--   </pre>
defaultFontConfig :: FontConfig

-- | This data type represents an option that can either be <a>Option</a>
--   or <a>Unset</a>.
--   
--   This data type is used in situations where leaving an option unset
--   results in a special state that is not representable by setting any
--   specific value.
--   
--   Examples of this include the <tt>cursorFgColour</tt> and
--   <tt>cursorBgColour</tt> options supplied by the <tt>ColourConfig</tt>
--   <tt>ConfigExtension</tt>. By default, <tt>cursorFgColour</tt> and
--   <tt>cursorBgColour</tt> are both <a>Unset</a>. However, when
--   <tt>cursorBgColour</tt> is <a>Option</a>, <tt>cursorFgColour</tt>
--   defaults to the color of the text underneath. There is no way to
--   represent this by setting <tt>cursorFgColour</tt>.
data Option a
Unset :: Option a
Set :: !a -> Option a

-- | Run a function over the value contained in an <a>Option</a>. Return
--   <a>mempty</a> when <a>Option</a> is <a>Unset</a>.
--   
--   <pre>
--   &gt;&gt;&gt; whenSet (Set [1,2,3]) (++ [4,5,6]) :: [Int]
--   [1,2,3,4,5,6]
--   
--   &gt;&gt;&gt; whenSet Unset (++ [4,5,6]) :: [Int]
--   []
--   </pre>
whenSet :: Monoid m => Option a -> (a -> m) -> m

-- | Whether or not to show the scroll bar in a terminal.
data ShowScrollbar

-- | Never show the scroll bar, even if there are too many lines on the
--   terminal to show all at once. You should still be able to scroll with
--   the mouse wheel.
ShowScrollbarNever :: ShowScrollbar

-- | Always show the scrollbar, even if it is not needed.
ShowScrollbarAlways :: ShowScrollbar

-- | Only show the scrollbar if there are too many lines on the terminal to
--   show all at once.
ShowScrollbarIfNeeded :: ShowScrollbar

-- | Whether or not to show the tab bar for switching tabs.
data ShowTabBar

-- | Never show the tab bar, even if there are multiple tabs open. This may
--   be confusing if you plan on using multiple tabs.
ShowTabBarNever :: ShowTabBar

-- | Always show the tab bar, even if you only have one tab open.
ShowTabBarAlways :: ShowTabBar

-- | Only show the tab bar if you have multiple tabs open.
ShowTabBarIfNeeded :: ShowTabBar

-- | Configuration options for Termonad.
--   
--   See <a>defaultConfigOptions</a> for the default values.
data ConfigOptions
ConfigOptions :: !FontConfig -> !ShowScrollbar -> !Integer -> !Bool -> !Text -> !Bool -> !ShowTabBar -> !CursorBlinkMode -> !Bool -> !Bool -> !Bool -> ConfigOptions

-- | Specific options for fonts.
[fontConfig] :: ConfigOptions -> !FontConfig

-- | When to show the scroll bar.
[showScrollbar] :: ConfigOptions -> !ShowScrollbar

-- | The number of lines to keep in the scroll back history for each
--   terminal.
[scrollbackLen] :: ConfigOptions -> !Integer

-- | Whether or not to ask you for confirmation when closing individual
--   terminals or Termonad itself. It is generally safer to keep this as
--   <a>True</a>.
[confirmExit] :: ConfigOptions -> !Bool

-- | When double-clicking on text in the terminal with the mouse, Termonad
--   will use this value to determine what to highlight. The individual
--   characters in this list will be counted as part of a word.
--   
--   For instance if <a>wordCharExceptions</a> is <tt>""</tt>, then when
--   you double-click on the text <tt>http://</tt>, only the <tt>http</tt>
--   portion will be highlighted. If <a>wordCharExceptions</a> is
--   <tt>":"</tt>, then the <tt>http:</tt> portion will be highlighted.
[wordCharExceptions] :: ConfigOptions -> !Text

-- | Whether or not to show the <tt>File</tt> <tt>Edit</tt> etc menu.
[showMenu] :: ConfigOptions -> !Bool

-- | When to show the tab bar.
[showTabBar] :: ConfigOptions -> !ShowTabBar

-- | How to handle cursor blink.
[cursorBlinkMode] :: ConfigOptions -> !CursorBlinkMode

-- | This option controls whether or not to force bold text to use colors
--   from the <a>ExtendedPalatte</a>.
--   
--   If <a>True</a>, then colored bold text will <i>always</i> use colors
--   from the <a>ExtendedPalatte</a>. There will be no way to print bold
--   text colored with the <a>BasicPalatte</a>.
--   
--   This often isn't a big problem, since many TUI applications use bold
--   in combination with colors from the <a>ExtendedPalatte</a>. Also, the
--   VTE default blue color can be difficult to read with a dark
--   background, and enabling this can work around the problem. See
--   <a>https://github.com/cdepillabout/termonad/issues/177</a> for more
--   information.
--   
--   If <a>False</a>, then bold can be applied separately to colors from
--   both the <a>BasicPalatte</a> and <a>ExtendedPalatte</a>.
[boldIsBright] :: ConfigOptions -> !Bool

-- | Enable SIXEL to draw graphics in a terminal.
--   
--   In order for this option to do anything, you need to be using a
--   version of VTE &gt;= 0.63, and compile VTE with SIXEL support.
--   
--   Note that even if you do the above, there may still be some problems
--   with SIXEL support in VTE. Follow
--   <a>https://gitlab.gnome.org/GNOME/vte/-/issues/253</a> for more
--   information.
[enableSixel] :: ConfigOptions -> !Bool

-- | Allow terminal to use bold text.
--   
--   You may want to disable this, for instance, if you use a font that
--   doesn't look good when bold.
[allowBold] :: ConfigOptions -> !Bool

-- | The default <a>ConfigOptions</a>.
--   
--   <pre>
--   &gt;&gt;&gt; :{
--     let defConfOpt =
--           ConfigOptions
--             { fontConfig = defaultFontConfig
--             , showScrollbar = ShowScrollbarIfNeeded
--             , scrollbackLen = 10000
--             , confirmExit = True
--             , wordCharExceptions = "-#%&amp;+,./=?@\\_~\183:"
--             , showMenu = True
--             , showTabBar = ShowTabBarIfNeeded
--             , cursorBlinkMode = CursorBlinkModeOn
--             , boldIsBright = False
--             , enableSixel = False
--             , allowBold = True
--             }
--     in defaultConfigOptions == defConfOpt
--   :}
--   True
--   </pre>
defaultConfigOptions :: ConfigOptions

-- | The Termonad <a>ConfigOptions</a> along with the <a>ConfigHooks</a>.
data TMConfig
TMConfig :: !ConfigOptions -> !ConfigHooks -> TMConfig
[options] :: TMConfig -> !ConfigOptions
[hooks] :: TMConfig -> !ConfigHooks

-- | The default <a>TMConfig</a>.
--   
--   <a>options</a> is <a>defaultConfigOptions</a> and <a>hooks</a> is
--   <a>defaultConfigHooks</a>.
defaultTMConfig :: TMConfig

-- | Hooks into certain termonad operations and VTE events. Used to modify
--   termonad's behaviour in order to implement new functionality. Fields
--   should have sane <tt>Semigroup</tt> and <tt>Monoid</tt> instances so
--   that config extensions can be combined uniformly and new hooks can be
--   added without incident.
newtype ConfigHooks
ConfigHooks :: (TMState -> Terminal -> IO ()) -> ConfigHooks

-- | Produce an IO action to run on creation of new <tt>Terminal</tt>,
--   given <tt>TMState</tt> and the <tt>Terminal</tt> in question.
[createTermHook] :: ConfigHooks -> TMState -> Terminal -> IO ()

-- | Default values for the <a>ConfigHooks</a>.
--   
--   <ul>
--   <li>The default function for <a>createTermHook</a> is
--   <a>defaultCreateTermHook</a>.</li>
--   </ul>
defaultConfigHooks :: ConfigHooks

-- | Default value for <a>createTermHook</a>. Does nothing.
defaultCreateTermHook :: TMState -> Terminal -> IO ()
data FocusNotSameErr
FocusListFocusExistsButNoNotebookTabWidget :: FocusNotSameErr
NotebookTabWidgetDiffersFromFocusListFocus :: FocusNotSameErr
NotebookTabWidgetExistsButNoFocusListFocus :: FocusNotSameErr
data TabsDoNotMatch

-- | The first <a>Int</a> is the number of tabs in the actual GTK
--   <a>Notebook</a>. The second <a>Int</a> is the number of tabs in the
--   <a>FocusList</a>.
TabLengthsDifferent :: Int -> Int -> TabsDoNotMatch

-- | The tab at index <a>Int</a> is different between the actual GTK
--   <a>Notebook</a> and the <a>FocusList</a>.
TabAtIndexDifferent :: Int -> TabsDoNotMatch
data TMStateInvariantErr
FocusNotSame :: FocusNotSameErr -> Int -> TMStateInvariantErr
TabsDoNotMatch :: TabsDoNotMatch -> TMStateInvariantErr

-- | Gather up the invariants for <a>TMState'</a> and return them as a
--   list.
--   
--   If no invariants have been violated, then this function should return
--   an empty list.
invariantTMState' :: TMState' -> IO [TMStateInvariantErr]

-- | Check the invariants for <a>TMState'</a>, and call <a>fail</a> if we
--   find that they have been violated.
assertInvariantTMState :: TMState -> IO ()
pPrintTMState :: TMState -> IO ()
instance Data.Aeson.Types.ToJSON.ToJSON Termonad.Types.FontSize
instance GHC.Show.Show Termonad.Types.FontSize
instance GHC.Generics.Generic Termonad.Types.FontSize
instance Data.Aeson.Types.FromJSON.FromJSON Termonad.Types.FontSize
instance GHC.Classes.Eq Termonad.Types.FontSize
instance Data.Aeson.Types.ToJSON.ToJSON Termonad.Types.FontConfig
instance GHC.Show.Show Termonad.Types.FontConfig
instance GHC.Generics.Generic Termonad.Types.FontConfig
instance Data.Aeson.Types.FromJSON.FromJSON Termonad.Types.FontConfig
instance GHC.Classes.Eq Termonad.Types.FontConfig
instance Data.Foldable.Foldable Termonad.Types.Option
instance GHC.Base.Functor Termonad.Types.Option
instance GHC.Classes.Ord a => GHC.Classes.Ord (Termonad.Types.Option a)
instance GHC.Classes.Eq a => GHC.Classes.Eq (Termonad.Types.Option a)
instance GHC.Read.Read a => GHC.Read.Read (Termonad.Types.Option a)
instance GHC.Show.Show a => GHC.Show.Show (Termonad.Types.Option a)
instance Data.Aeson.Types.ToJSON.ToJSON Termonad.Types.ShowScrollbar
instance GHC.Show.Show Termonad.Types.ShowScrollbar
instance Data.Aeson.Types.FromJSON.FromJSON Termonad.Types.ShowScrollbar
instance GHC.Generics.Generic Termonad.Types.ShowScrollbar
instance GHC.Classes.Eq Termonad.Types.ShowScrollbar
instance GHC.Enum.Enum Termonad.Types.ShowScrollbar
instance Data.Aeson.Types.ToJSON.ToJSON Termonad.Types.ShowTabBar
instance GHC.Show.Show Termonad.Types.ShowTabBar
instance Data.Aeson.Types.FromJSON.FromJSON Termonad.Types.ShowTabBar
instance GHC.Generics.Generic Termonad.Types.ShowTabBar
instance GHC.Classes.Eq Termonad.Types.ShowTabBar
instance GHC.Enum.Enum Termonad.Types.ShowTabBar
instance Data.Aeson.Types.ToJSON.ToJSON Termonad.Types.ConfigOptions
instance GHC.Show.Show Termonad.Types.ConfigOptions
instance Data.Aeson.Types.FromJSON.FromJSON Termonad.Types.ConfigOptions
instance GHC.Generics.Generic Termonad.Types.ConfigOptions
instance GHC.Classes.Eq Termonad.Types.ConfigOptions
instance GHC.Show.Show Termonad.Types.TMConfig
instance GHC.Show.Show Termonad.Types.FocusNotSameErr
instance GHC.Show.Show Termonad.Types.TabsDoNotMatch
instance GHC.Show.Show Termonad.Types.TMStateInvariantErr
instance GHC.Show.Show Termonad.Types.TMState'
instance GHC.Show.Show Termonad.Types.ConfigHooks
instance GHC.Show.Show Termonad.Types.TMNotebook
instance GHC.Show.Show Termonad.Types.TMNotebookTab
instance GHC.Classes.Eq Termonad.Types.TMNotebookTab
instance GHC.Show.Show Termonad.Types.TMTerm
instance GHC.Classes.Eq Termonad.Types.TMTerm
instance Data.Aeson.Types.FromJSON.FromJSON GI.Vte.Enums.CursorBlinkMode
instance Data.Aeson.Types.ToJSON.ToJSON GI.Vte.Enums.CursorBlinkMode

module Termonad.PreferencesFile

-- | Get the path to the preferences file
--   <tt>~/.config/termonad/termonad.yaml</tt>.
getPreferencesFile :: IO FilePath

-- | Read the configuration for the preferences file
--   <tt>~/.config/termonad/termonad.yaml</tt>. This file stores only the
--   <a>options</a> of <a>TMConfig</a> so <a>hooks</a> are initialized with
--   <a>defaultConfigHooks</a>. If the file doesn't exist, create it with
--   the default values.
--   
--   Any options that do not exist will get initialized with values from
--   <a>defaultConfigOptions</a>.
tmConfigFromPreferencesFile :: IO TMConfig

-- | Read the <a>ConfigOptions</a> out of a configuration file.
--   
--   Merge the raw <a>ConfigOptions</a> with <a>defaultConfigOptions</a>.
--   This makes sure that old versions of the configuration file will still
--   be able to be read even if new options are added to
--   <a>ConfigOptions</a> in new versions of Termonad.
readFileWithDefaults :: FilePath -> IO (Either Text ConfigOptions)

-- | Merge <a>Value</a>s recursively.
--   
--   This merges <a>Value</a>s recursively in <a>Object</a> values, taking
--   values that have been explicitly over the defaults. The defaults are
--   only used if there is no value that has been explicitly set.
--   
--   For <a>Array</a>, <a>Value</a>, <a>Number</a>, <a>Value</a>, and
--   <a>Null</a>, take the first <a>Value</a> (the one that has been
--   explicitly set in the user's config file):
--   
--   <pre>
--   &gt;&gt;&gt; mergeObjVals (Array [Number 1, Number 2]) (Array [String "hello"])
--   Array [Number 1.0,Number 2.0]
--   
--   &gt;&gt;&gt; mergeObjVals (String "hello") (String "bye")
--   String "hello"
--   
--   &gt;&gt;&gt; mergeObjVals (Number 1) (Number 2)
--   Number 1.0
--   
--   &gt;&gt;&gt; mergeObjVals (Bool True) (Bool False)
--   Bool True
--   
--   &gt;&gt;&gt; mergeObjVals Null Null
--   Null
--   </pre>
--   
--   Note that <a>Value</a>s in <a>Array</a>s are not recursed into:
--   
--   <pre>
--   &gt;&gt;&gt; let obj1 = object ["hello" .= Number 2]
--   
--   &gt;&gt;&gt; let obj2 = object ["hello" .= String "bye"]
--   
--   &gt;&gt;&gt; mergeObjVals (Array [obj1]) (Array [obj2])
--   Array [Object (fromList [("hello",Number 2.0)])]
--   </pre>
--   
--   <a>Object</a>s are recursed into. Unique keys from both Maps will be
--   used. Keys that are in both Maps will be merged according to the rules
--   above:
--   
--   <pre>
--   &gt;&gt;&gt; let object1 = object ["hello" .= Number 1, "bye" .= Number 100]
--   
--   &gt;&gt;&gt; let object2 = object ["hello" .= Number 2, "goat" .= String "chicken"]
--   
--   &gt;&gt;&gt; mergeObjVals object1 object2
--   Object (fromList [("bye",Number 100.0),("goat",String "chicken"),("hello",Number 1.0)])
--   </pre>
--   
--   <a>Value</a>s of different types will use the second <a>Value</a>:
--   
--   <pre>
--   &gt;&gt;&gt; mergeObjVals Null (String "bye")
--   String "bye"
--   
--   &gt;&gt;&gt; mergeObjVals (Bool True) (Number 2)
--   Number 2.0
--   
--   &gt;&gt;&gt; mergeObjVals (Object mempty) (Bool False)
--   Bool False
--   </pre>
mergeObjVals :: Value -> Value -> Value
writePreferencesFile :: FilePath -> ConfigOptions -> IO ()

-- | Save the configuration to the preferences file
--   <tt>~/.config/termonad/termonad.yaml</tt>
saveToPreferencesFile :: TMConfig -> IO ()

module Termonad.Lenses
lensUnique :: Lens' TMTerm Unique
lensTerm :: Lens' TMTerm Terminal
lensPid :: Lens' TMTerm Int
lensTMNotebookTabTermContainer :: Lens' TMNotebookTab ScrolledWindow
lensTMNotebookTabTerm :: Lens' TMNotebookTab TMTerm
lensTMNotebookTabLabel :: Lens' TMNotebookTab Label
lensTMNotebookTabs :: Lens' TMNotebook (FocusList TMNotebookTab)
lensTMNotebook :: Lens' TMNotebook Notebook
lensTMStateNotebook :: Lens' TMState' TMNotebook
lensTMStateFontDesc :: Lens' TMState' FontDescription
lensTMStateConfig :: Lens' TMState' TMConfig
lensTMStateAppWin :: Lens' TMState' ApplicationWindow
lensTMStateApp :: Lens' TMState' Application
_FontSizeUnits :: Prism' FontSize Double
_FontSizePoints :: Prism' FontSize Int
lensFontSize :: Lens' FontConfig FontSize
lensFontFamily :: Lens' FontConfig Text
lensWordCharExceptions :: Lens' ConfigOptions Text
lensShowTabBar :: Lens' ConfigOptions ShowTabBar
lensShowScrollbar :: Lens' ConfigOptions ShowScrollbar
lensShowMenu :: Lens' ConfigOptions Bool
lensScrollbackLen :: Lens' ConfigOptions Integer
lensFontConfig :: Lens' ConfigOptions FontConfig
lensEnableSixel :: Lens' ConfigOptions Bool
lensCursorBlinkMode :: Lens' ConfigOptions CursorBlinkMode
lensConfirmExit :: Lens' ConfigOptions Bool
lensBoldIsBright :: Lens' ConfigOptions Bool
lensAllowBold :: Lens' ConfigOptions Bool
lensCreateTermHook :: Iso' ConfigHooks (TMState -> Terminal -> IO ())
lensOptions :: Lens' TMConfig ConfigOptions
lensHooks :: Lens' TMConfig ConfigHooks

module Termonad.Term
focusTerm :: Int -> TMState -> IO ()
altNumSwitchTerm :: Int -> TMState -> IO ()
termNextPage :: TMState -> IO ()
termPrevPage :: TMState -> IO ()
termExitFocused :: TMState -> IO ()
termClose :: TMNotebookTab -> TMState -> IO ()
termExitWithConfirmation :: TMNotebookTab -> TMState -> IO ()
termExit :: TMNotebookTab -> TMState -> IO ()
relabelTabs :: TMState -> IO ()

-- | Compute the text for a <a>Label</a> for a GTK Notebook tab.
--   
--   <pre>
--   &gt;&gt;&gt; computeTabLabel 0 (Just "me@machine:~")
--   "1. me@machine:~"
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; computeTabLabel 5 (Just "bash process")
--   "6. bash process"
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; computeTabLabel 2 Nothing
--   "3. shell"
--   </pre>
computeTabLabel :: Int -> Maybe Text -> Text

-- | Update the given <a>Label</a> for a GTK Notebook tab.
--   
--   The new text for the label is determined by the <a>computeTabLabel</a>
--   function.
relabelTab :: Notebook -> Label -> ScrolledWindow -> Terminal -> IO ()
showScrollbarToPolicy :: ShowScrollbar -> PolicyType
createScrolledWin :: TMState -> IO ScrolledWindow
createNotebookTabLabel :: IO (Box, Label, Button)
setShowTabs :: TMConfig -> Notebook -> IO ()
toRGBA :: Colour Double -> IO RGBA

-- | TODO: This should probably be implemented in an external package,
--   since it is a generally useful utility.
--   
--   It should also be implemented for windows and osx.
cwdOfPid :: Int -> IO (Maybe Text)

-- | Get the current working directory from the shell in the focused tab of
--   a notebook.
--   
--   Returns <a>Nothing</a> if there is no focused tab of the notebook, or
--   the current working directory could not be detected for the shell.
getCWDFromFocusedTab :: TMNotebook -> IO (Maybe Text)

-- | Create the VTE <a>Terminal</a>, set the fonts and options
createAndInitVteTerm :: FontDescription -> ConfigOptions -> IO Terminal

-- | Starts a shell in a terminal and return a new TMTerm
launchShell :: Terminal -> Maybe Text -> IO Int

-- | Add a page to the notebook and switch to it.
addPage :: TMState -> TMNotebookTab -> Box -> IO ()

-- | Set the keyboard focus on a vte terminal
setFocusOn :: ApplicationWindow -> Terminal -> IO ()

-- | Create a new <a>TMTerm</a>, setting it up and adding it to the
--   GTKNotebook.
createTerm :: (TMState -> EventKey -> IO Bool) -> TMState -> IO TMTerm

-- | Popup the context menu on right click
handleMousePress :: ApplicationWindow -> Terminal -> EventButton -> IO Bool
eventButtonToEvent :: EventButton -> Event

module Termonad.Keys
showKeys :: EventKey -> IO Bool
data Key
Key :: Word32 -> Set ModifierType -> Key
[keyVal] :: Key -> Word32
[keyMods] :: Key -> Set ModifierType
toKey :: Word32 -> Set ModifierType -> Key
keyMap :: Map Key (TMState -> IO Bool)
stopProp :: (TMState -> IO a) -> TMState -> IO Bool
removeStrangeModifiers :: Key -> Key
handleKeyPress :: TMState -> EventKey -> IO Bool
instance GHC.Show.Show Termonad.Keys.Key
instance GHC.Classes.Ord Termonad.Keys.Key
instance GHC.Classes.Eq Termonad.Keys.Key


-- | To use this config extension in your
--   <tt>~/.config/termonad/termonad.hs</tt>, first import this module.
--   Create a new <a>ColourExtension</a> with the
--   <a>createColourExtension</a> function. Then add the
--   <a>ColourExtension</a> to your <a>TMConfig</a> with the
--   <a>addColourExtension</a> function.
--   
--   See <a>this code</a> for a simple example.
--   
--   When setting colors, you may find it convenient to use the
--   <a>print-console-colors</a> package, which provides an executable
--   called <tt>print-console-colors</tt> that prints all of the colors for
--   your terminal.
module Termonad.Config.Colour

-- | The configuration for the colors used by Termonad.
--   
--   <a>foregroundColour</a> and <a>backgroundColour</a> allow you to set
--   the color of the foreground text and background of the terminal.
--   
--   <a>highlightFgColour</a> and <a>highlightBgColour</a> allow you to set
--   the color of the foreground and background of the highlighted text.
--   
--   <a>palette</a> allows you to set the full color palette used by the
--   terminal. See <a>Palette</a> for more information.
--   
--   If you don't set <a>foregroundColour</a>, <a>backgroundColour</a>,
--   <a>highlightFgColour</a>, <a>highlightBgColour</a>, or <a>palette</a>,
--   the defaults from VTE are used.
--   
--   If you want to use a terminal with a white (or light) background and a
--   black foreground, it may be a good idea to change some of the colors
--   in the <a>Palette</a> as well.
--   
--   VTE works as follows: if you don't explicitly set a background or
--   foreground color, it takes the 0th colour from the <a>palette</a> to
--   be the background color, and the 7th colour from the <a>palette</a> to
--   be the foreground color. If you notice oddities with colouring in
--   certain applications, it may be helpful to make sure that these
--   <a>palette</a> colours match up with the <a>backgroundColour</a> and
--   <a>foregroundColour</a> you have set.)
--   
--   <a>cursorFgColour</a> and <a>cursorBgColour</a> allow you to set the
--   foreground color of the text under the cursor, as well as the color of
--   the cursor itself.
--   
--   Termonad will behave differently depending on the combination
--   <a>cursorFgColour</a> and <a>cursorBgColour</a> being <a>Set</a> vs.
--   <a>Unset</a>. Here is the summary of the different possibilities:
--   
--   <ul>
--   <li><a>cursorFgColour</a> is <a>Set</a> and <a>cursorBgColour</a> is
--   <a>Set</a>The foreground and background colors of the cursor are as
--   you have set.</li>
--   <li><a>cursorFgColour</a> is <a>Set</a> and <a>cursorBgColour</a> is
--   <a>Unset</a>The cursor background color turns completely black so that
--   it is not visible. The foreground color of the cursor is the color
--   that you have <a>Set</a>. This ends up being mostly unusable, so you
--   are recommended to always <a>Set</a> <a>cursorBgColour</a> when you
--   have <a>Set</a> <a>cursorFgColour</a>.</li>
--   <li><a>cursorFgColour</a> is <a>Unset</a> and <a>cursorBgColour</a> is
--   <a>Set</a>The cursor background color becomes the color you
--   <a>Set</a>, while the cursor foreground color doesn't change from the
--   letter it is over. For instance, imagine there is a letter on the
--   screen with a black background and a green foreground. If you bring
--   the cursor overtop of it, the cursor background will be the color you
--   have <a>Set</a>, while the cursor foreground will be green.This is
--   completely usable, but is slightly annoying if you place the cursor
--   over a letter with the same foreground color as the cursor's
--   background color, because the letter will not be readable. For
--   instance, imagine you have set your cursor background color to red,
--   and somewhere on the screen there is a letter with a black background
--   and a red foreground. If you move your cursor over the letter, the
--   background of the cursor will be red (as you have set), and the cursor
--   foreground will be red (to match the original foreground color of the
--   letter). This will make it so you can't actually read the letter,
--   because the foreground and background are both red.</li>
--   <li><a>cursorFgColour</a> is <a>Unset</a> and <a>cursorBgColour</a> is
--   <a>Unset</a>This combination makes the cursor inverse of whatever text
--   it is over. If your cursor is over red text with a black background,
--   the cursor background will be red and the cursor foreground will be
--   black.This is the default.</li>
--   </ul>
--   
--   <a>cursorFgColour</a> is not supported in <tt>vte-2.91</tt> versions
--   older than 0.44. (This is somewhat confusing. Note that
--   <tt>vte-2.91</tt> is the name of the system library, and <tt>0.44</tt>
--   is its version number.)
--   
--   See <a>defaultColourConfig</a> for the defaults for
--   <a>ColourConfig</a> used in Termonad.
data ColourConfig c
ColourConfig :: !Option c -> !Option c -> !Option c -> !Option c -> !Option c -> !Option c -> !Palette c -> ColourConfig c

-- | Foreground color of the cursor. This is the color of the text that the
--   cursor is over. This is not supported on older versions of VTE.
[cursorFgColour] :: ColourConfig c -> !Option c

-- | Background color of the cursor. This is the color of the cursor
--   itself.
[cursorBgColour] :: ColourConfig c -> !Option c

-- | Color of the default foreground text in the terminal.
[foregroundColour] :: ColourConfig c -> !Option c

-- | Background color for the terminal
[backgroundColour] :: ColourConfig c -> !Option c

-- | Foreground color for the highlighted text.
[highlightFgColour] :: ColourConfig c -> !Option c

-- | Background color for the highlighted text.
[highlightBgColour] :: ColourConfig c -> !Option c

-- | Color palette for the terminal. See <a>Palette</a>.
[palette] :: ColourConfig c -> !Palette c

-- | Default setting for a <a>ColourConfig</a>. The cursor colors, font
--   foreground color, background color, highlighted text color, and color
--   palette are all left at the defaults set by VTE.
--   
--   <pre>
--   &gt;&gt;&gt; defaultColourConfig
--   ColourConfig {cursorFgColour = Unset, cursorBgColour = Unset, foregroundColour = Unset, backgroundColour = Unset, highlightFgColour = Unset, highlightBgColour = Unset, palette = NoPalette}
--   </pre>
defaultColourConfig :: ColourConfig (AlphaColour Double)

-- | This newtype is for length 8 lists. Construct it with <a>mkList8</a>
--   or <a>unsafeMkList8</a>
data List8 a

-- | This newtype is for length 6 lists. Construct it with <a>mkList6</a>
--   or <a>unsafeMkList6</a>
data List6 a

-- | This newtype is for length 24 lists. Construct it with <a>mkList24</a>
--   or <a>unsafeMkList24</a>
data List24 a

-- | This newtype is for 6x6x6 matrices.. Construct it with <a>mkMatrix</a>
--   or <a>unsafeMkMatrix</a>
data Matrix a

-- | Typesafe smart constructor for length 8 lists.
mkList8 :: [a] -> Maybe (List8 a)

-- | Unsafe smart constructor for length 8 lists.
unsafeMkList8 :: [a] -> List8 a

-- | Set a given value in a <a>List8</a>.
--   
--   Internally uses <a>setAt</a>. See documentation on <a>setAt</a> for
--   some examples.
setAtList8 :: Int -> a -> List8 a -> List8 a

-- | Set a given value in a <a>List8</a>.
--   
--   Internally uses <a>overAt</a>. See documentation on <a>overAt</a> for
--   some examples.
overAtList8 :: Int -> (a -> a) -> List8 a -> List8 a

-- | Typesafe smart constructor for length 6 lists.
mkList6 :: [a] -> Maybe (List6 a)

-- | Unsafe smart constructor for length 6 lists.
unsafeMkList6 :: [a] -> List6 a

-- | Set a given value in a <a>List6</a>.
--   
--   Internally uses <a>setAt</a>. See documentation on <a>setAt</a> for
--   some examples.
setAtList6 :: Int -> a -> List6 a -> List6 a

-- | Set a given value in a <a>List6</a>.
--   
--   Internally uses <a>overAt</a>. See documentation on <a>overAt</a> for
--   some examples.
overAtList6 :: Int -> (a -> a) -> List6 a -> List6 a

-- | Typesafe smart constructor for length 24 lists.
mkList24 :: [a] -> Maybe (List24 a)

-- | Unsafe smart constructor for length 24 lists.
unsafeMkList24 :: [a] -> List24 a

-- | Set a given value in a <a>List24</a>.
--   
--   Internally uses <a>setAt</a>. See documentation on <a>setAt</a> for
--   some examples.
setAtList24 :: Int -> a -> List24 a -> List24 a

-- | Set a given value in a <a>List24</a>.
--   
--   Internally uses <a>overAt</a>. See documentation on <a>overAt</a> for
--   some examples.
overAtList24 :: Int -> (a -> a) -> List24 a -> List24 a

-- | Unsafe smart constructor for 6x6x6 Matrices.
mkMatrix :: [[[a]]] -> Maybe (Matrix a)

-- | Unsafe smart constructor for 6x6x6 Matrices.
unsafeMkMatrix :: [[[a]]] -> Matrix a

-- | Set a given value in a <a>Matrix</a>.
--   
--   Internally uses <a>setAt</a>. See documentation on <a>setAt</a> for
--   some examples.
setAtMatrix :: Int -> Int -> Int -> a -> Matrix a -> Matrix a

-- | Set a given value in a <a>Matrix</a>.
--   
--   Internally uses <a>overAt</a>. See documentation on <a>overAt</a> for
--   some examples.
overAtMatrix :: Int -> Int -> Int -> (a -> a) -> Matrix a -> Matrix a
lensCursorFgColour :: forall c_a1ikz. Lens' (ColourConfig c_a1ikz) (Option c_a1ikz)
lensCursorBgColour :: forall c_a1ikz. Lens' (ColourConfig c_a1ikz) (Option c_a1ikz)
lensForegroundColour :: forall c_a1ikz. Lens' (ColourConfig c_a1ikz) (Option c_a1ikz)
lensBackgroundColour :: forall c_a1ikz. Lens' (ColourConfig c_a1ikz) (Option c_a1ikz)
lensHighlightFgColour :: forall c_a1ikz. Lens' (ColourConfig c_a1ikz) (Option c_a1ikz)
lensHighlightBgColour :: forall c_a1ikz. Lens' (ColourConfig c_a1ikz) (Option c_a1ikz)
lensPalette :: forall c_a1ikz. Lens' (ColourConfig c_a1ikz) (Palette c_a1ikz)

-- | Extension that allows setting colors for terminals in Termonad.
data ColourExtension
ColourExtension :: MVar (ColourConfig (AlphaColour Double)) -> (TMState -> Terminal -> IO ()) -> ColourExtension

-- | <a>MVar</a> holding the current <a>ColourConfig</a>. This could
--   potentially be passed to other extensions or user code. This would
--   allow changing the colors for new terminals in realtime.
[colourExtConf] :: ColourExtension -> MVar (ColourConfig (AlphaColour Double))

-- | The <tt>createTermHook</tt> used by the <a>ColourExtension</a>. This
--   sets the colors for a new terminal based on the <a>ColourConfig</a> in
--   <a>colourExtConf</a>.
[colourExtCreateTermHook] :: ColourExtension -> TMState -> Terminal -> IO ()

-- | Create a <a>ColourExtension</a> based on a given <a>ColourConfig</a>.
--   
--   Most users will want to use this.
createColourExtension :: ColourConfig (AlphaColour Double) -> IO ColourExtension

-- | Create a <a>ColourExtension</a> based on <a>defaultColourConfig</a>.
--   
--   Note that this is not needed if you just want to use the default
--   colors for Termonad. However, if you want to pass around the
--   <a>MVar</a> <a>ColourConfig</a> for extensions to use, then you may
--   need this function.
createDefColourExtension :: IO ColourExtension

-- | This is similar to <a>addColourConfig</a>, but can be used on a
--   <a>ColourExtension</a> created with <a>createColourExtension</a>.
addColourExtension :: TMConfig -> ColourExtension -> TMConfig

-- | Add a given <a>ColourConfig</a> to a <a>TMConfig</a>. This adds
--   <a>colourHook</a> to the <tt>createTermHook</tt> in <a>TMConfig</a>.
addColourConfig :: TMConfig -> ColourConfig (AlphaColour Double) -> IO TMConfig

-- | The default <tt>createTermHook</tt> for
--   <a>colourExtCreateTermHook</a>. Set the colors for a terminal based on
--   the given <a>ColourConfig</a>.
colourHook :: MVar (ColourConfig (AlphaColour Double)) -> TMState -> Terminal -> IO ()

-- | This function shows how to combine <tt>createTermHook</tt>s.
--   
--   This first runs the old hook, followed by the new hook.
--   
--   This is used internally by <a>addColourConfig</a> and
--   <a>addColourExtension</a>.
addColourHook :: (TMState -> Terminal -> IO ()) -> (TMState -> Terminal -> IO ()) -> TMState -> Terminal -> IO ()

-- | This is the color palette to use for the terminal. Each data
--   constructor lets you set progressively more colors. These colors are
--   used by the terminal to render <a>ANSI escape color codes</a>.
--   
--   There are 256 total terminal colors. <a>BasicPalette</a> lets you set
--   the first 8, <a>ExtendedPalette</a> lets you set the first 16,
--   <a>ColourCubePalette</a> lets you set the first 232, and
--   <a>FullPalette</a> lets you set all 256.
--   
--   The first 8 colors codes are the standard colors. The next 8 are the
--   extended (light) colors. The next 216 are a full color cube. The last
--   24 are a grey scale.
--   
--   The following image gives an idea of what each individual color looks
--   like:
--   
--   
--   This picture does not exactly match up with Termonad's default colors,
--   but it gives an idea of what each block of colors represents.
--   
--   You can use <a>defaultStandardColours</a>, <a>defaultLightColours</a>,
--   <a>defaultColourCube</a>, and <a>defaultGreyscale</a> as a starting
--   point to customize the colors. The only time you'd need to use a
--   constructor other than <a>NoPalette</a> is when you want to customize
--   the default colors. That is to say, using <a>FullPalette</a> with all
--   the defaults should give you the same result as using
--   <a>NoPalette</a>.
data Palette c

-- | Don't set any colors and just use the default from VTE. This is a
--   black background with light grey text.
NoPalette :: Palette c

-- | Set the colors from the standard colors.
BasicPalette :: !List8 c -> Palette c

-- | Set the colors from the extended (light) colors (as well as standard
--   colors).
ExtendedPalette :: !List8 c -> !List8 c -> Palette c

-- | Set the colors from the color cube (as well as the standard colors and
--   extended colors).
ColourCubePalette :: !List8 c -> !List8 c -> !Matrix c -> Palette c

-- | Set the colors from the grey scale (as well as the standard colors,
--   extended colors, and color cube).
FullPalette :: !List8 c -> !List8 c -> !Matrix c -> !List24 c -> Palette c

-- | A <tt>Vec</tt> of standard colors. Default value for
--   <a>BasicPalette</a>.
--   
--   <pre>
--   &gt;&gt;&gt; showColourVec defaultStandardColours
--   ["#000000ff","#c00000ff","#00c000ff","#c0c000ff","#0000c0ff","#c000c0ff","#00c0c0ff","#c0c0c0ff"]
--   </pre>
defaultStandardColours :: (Ord b, Floating b) => List8 (AlphaColour b)

-- | A <tt>Vec</tt> of extended (light) colors. Default value for
--   <a>ExtendedPalette</a>.
--   
--   <pre>
--   &gt;&gt;&gt; showColourVec defaultLightColours
--   ["#3f3f3fff","#ff3f3fff","#3fff3fff","#ffff3fff","#3f3fffff","#ff3fffff","#3fffffff","#ffffffff"]
--   </pre>
defaultLightColours :: (Ord b, Floating b) => List8 (AlphaColour b)

-- | A matrix of a 6 x 6 x 6 color cube. Default value for
--   <a>ColourCubePalette</a>.
--   
--   <pre>
--   &gt;&gt;&gt; putStrLn $ pack $ showColourCube defaultColourCube
--   [ [ #000000ff, #00005fff, #000087ff, #0000afff, #0000d7ff, #0000ffff
--     , #005f00ff, #005f5fff, #005f87ff, #005fafff, #005fd7ff, #005fffff
--     , #008700ff, #00875fff, #008787ff, #0087afff, #0087d7ff, #0087ffff
--     , #00af00ff, #00af5fff, #00af87ff, #00afafff, #00afd7ff, #00afffff
--     , #00d700ff, #00d75fff, #00d787ff, #00d7afff, #00d7d7ff, #00d7ffff
--     , #00ff00ff, #00ff5fff, #00ff87ff, #00ffafff, #00ffd7ff, #00ffffff
--     ]
--   , [ #5f0000ff, #5f005fff, #5f0087ff, #5f00afff, #5f00d7ff, #5f00ffff
--     , #5f5f00ff, #5f5f5fff, #5f5f87ff, #5f5fafff, #5f5fd7ff, #5f5fffff
--     , #5f8700ff, #5f875fff, #5f8787ff, #5f87afff, #5f87d7ff, #5f87ffff
--     , #5faf00ff, #5faf5fff, #5faf87ff, #5fafafff, #5fafd7ff, #5fafffff
--     , #5fd700ff, #5fd75fff, #5fd787ff, #5fd7afff, #5fd7d7ff, #5fd7ffff
--     , #5fff00ff, #5fff5fff, #5fff87ff, #5fffafff, #5fffd7ff, #5fffffff
--     ]
--   , [ #870000ff, #87005fff, #870087ff, #8700afff, #8700d7ff, #8700ffff
--     , #875f00ff, #875f5fff, #875f87ff, #875fafff, #875fd7ff, #875fffff
--     , #878700ff, #87875fff, #878787ff, #8787afff, #8787d7ff, #8787ffff
--     , #87af00ff, #87af5fff, #87af87ff, #87afafff, #87afd7ff, #87afffff
--     , #87d700ff, #87d75fff, #87d787ff, #87d7afff, #87d7d7ff, #87d7ffff
--     , #87ff00ff, #87ff5fff, #87ff87ff, #87ffafff, #87ffd7ff, #87ffffff
--     ]
--   , [ #af0000ff, #af005fff, #af0087ff, #af00afff, #af00d7ff, #af00ffff
--     , #af5f00ff, #af5f5fff, #af5f87ff, #af5fafff, #af5fd7ff, #af5fffff
--     , #af8700ff, #af875fff, #af8787ff, #af87afff, #af87d7ff, #af87ffff
--     , #afaf00ff, #afaf5fff, #afaf87ff, #afafafff, #afafd7ff, #afafffff
--     , #afd700ff, #afd75fff, #afd787ff, #afd7afff, #afd7d7ff, #afd7ffff
--     , #afff00ff, #afff5fff, #afff87ff, #afffafff, #afffd7ff, #afffffff
--     ]
--   , [ #d70000ff, #d7005fff, #d70087ff, #d700afff, #d700d7ff, #d700ffff
--     , #d75f00ff, #d75f5fff, #d75f87ff, #d75fafff, #d75fd7ff, #d75fffff
--     , #d78700ff, #d7875fff, #d78787ff, #d787afff, #d787d7ff, #d787ffff
--     , #d7af00ff, #d7af5fff, #d7af87ff, #d7afafff, #d7afd7ff, #d7afffff
--     , #d7d700ff, #d7d75fff, #d7d787ff, #d7d7afff, #d7d7d7ff, #d7d7ffff
--     , #d7ff00ff, #d7ff5fff, #d7ff87ff, #d7ffafff, #d7ffd7ff, #d7ffffff
--     ]
--   , [ #ff0000ff, #ff005fff, #ff0087ff, #ff00afff, #ff00d7ff, #ff00ffff
--     , #ff5f00ff, #ff5f5fff, #ff5f87ff, #ff5fafff, #ff5fd7ff, #ff5fffff
--     , #ff8700ff, #ff875fff, #ff8787ff, #ff87afff, #ff87d7ff, #ff87ffff
--     , #ffaf00ff, #ffaf5fff, #ffaf87ff, #ffafafff, #ffafd7ff, #ffafffff
--     , #ffd700ff, #ffd75fff, #ffd787ff, #ffd7afff, #ffd7d7ff, #ffd7ffff
--     , #ffff00ff, #ffff5fff, #ffff87ff, #ffffafff, #ffffd7ff, #ffffffff
--     ]
--   ]
--   </pre>
defaultColourCube :: (Ord b, Floating b) => Matrix (AlphaColour b)

-- | A List of a grey scale. Default value for <a>FullPalette</a>.
--   
--   <pre>
--   &gt;&gt;&gt; fmap sRGB32show defaultGreyscale
--   List24 {getList24 = ["#080808ff","#121212ff","#1c1c1cff","#262626ff","#303030ff","#3a3a3aff","#444444ff","#4e4e4eff","#585858ff","#626262ff","#6c6c6cff","#767676ff","#808080ff","#8a8a8aff","#949494ff","#9e9e9eff","#a8a8a8ff","#b2b2b2ff","#bcbcbcff","#c6c6c6ff","#d0d0d0ff","#dadadaff","#e4e4e4ff","#eeeeeeff"]}
--   </pre>
defaultGreyscale :: (Ord b, Floating b) => List24 (AlphaColour b)

-- | This type represents a <a>Colour</a> that may be semi-transparent.
--   
--   The <a>Monoid</a> instance allows you to composite colours.
--   
--   <pre>
--   x `mappend` y == x `over` y
--   </pre>
--   
--   To get the (pre-multiplied) colour channel of an <a>AlphaColour</a>
--   <tt>c</tt>, simply composite <tt>c</tt> over black.
--   
--   <pre>
--   c `over` black
--   </pre>
data () => AlphaColour a

-- | Create an <a>AlphaColour</a> that is fully <a>opaque</a>.
--   
--   <pre>
--   &gt;&gt;&gt; sRGB32show $ createColour 64 96 128
--   "#406080ff"
--   
--   &gt;&gt;&gt; sRGB32show $ createColour 0 0 0
--   "#000000ff"
--   </pre>
--   
--   Similar to <a>sRGB24</a> but for <a>AlphaColour</a>.
createColour :: Word8 -> Word8 -> Word8 -> AlphaColour Double

-- | Create an <a>AlphaColour</a> from a four <a>Word8</a>s.
--   
--   <pre>
--   &gt;&gt;&gt; sRGB32show $ sRGB32 64 96 128 255
--   "#406080ff"
--   
--   &gt;&gt;&gt; sRGB32show $ sRGB32 0x08 0x10 0x20 0x01
--   "#08102001"
--   </pre>
--   
--   Note that if you specify the alpha as 0 (which means completely
--   translucent), all the color channels will be set to 0 as well.
--   
--   <pre>
--   &gt;&gt;&gt; sRGB32show $ sRGB32 100 150 200 0
--   "#00000000"
--   </pre>
--   
--   Similar to <a>sRGB24</a> but also includes an alpha channel. Most
--   users will probably want to use <a>createColour</a> instead.
sRGB32 :: Word8 -> Word8 -> Word8 -> Word8 -> AlphaColour Double

-- | Show an <a>AlphaColour</a> in hex.
--   
--   <pre>
--   &gt;&gt;&gt; sRGB32show (opaque red)
--   "#ff0000ff"
--   </pre>
--   
--   Similar to <a>sRGB24show</a>.
sRGB32show :: AlphaColour Double -> String

-- | Creates an opaque <a>AlphaColour</a> from a <a>Colour</a>.
opaque :: Num a => Colour a -> AlphaColour a

-- | This <a>AlphaColour</a> is entirely transparent and has no associated
--   colour channel.
transparent :: Num a => AlphaColour a

-- | A helper function for showing all the colors in <tt>Vec</tt> of
--   colors.
showColourVec :: List8 (AlphaColour Double) -> [String]

-- | Helper function for showing all the colors in a color cube. This is
--   used for debugging.
showColourCube :: Matrix (AlphaColour Double) -> String

-- | Convert a <a>Palette</a> to a list of colors. This is helpful for
--   debugging.
paletteToList :: Palette c -> [c]

-- | Create a vector of colors based on input bits.
--   
--   This is used to derive <a>defaultStandardColours</a> and
--   <a>defaultLightColours</a>.
--   
--   <pre>
--   &gt;&gt;&gt; coloursFromBits 192 0 == defaultStandardColours
--   True
--   </pre>
--   
--   <pre>
--   &gt;&gt;&gt; coloursFromBits 192 63 == defaultLightColours
--   True
--   </pre>
--   
--   In general, as an end-user, you shouldn't need to use this.
coloursFromBits :: forall b. (Ord b, Floating b) => Word8 -> Word8 -> List8 (AlphaColour b)

-- | Specify a colour cube with one colour vector for its displacement and
--   three colour vectors for its edges. Produces a uniform 6x6x6 grid
--   bounded by and orthognal to the faces.
cube :: forall b. Fractional b => AlphaColour b -> AlphaColour b -> AlphaColour b -> AlphaColour b -> Matrix (AlphaColour b)

-- | Set a given value in a list.
--   
--   <pre>
--   &gt;&gt;&gt; setAt 2 "hello" ["a","b","c","d"]
--   ["a","b","hello","d"]
--   </pre>
--   
--   You can set the first and last values in the list as well:
--   
--   <pre>
--   &gt;&gt;&gt; setAt 0 "hello" ["a","b","c","d"]
--   ["hello","b","c","d"]
--   
--   &gt;&gt;&gt; setAt 3 "hello" ["a","b","c","d"]
--   ["a","b","c","hello"]
--   </pre>
--   
--   If you try to set a value outside of the list, you'll get back the
--   same list:
--   
--   <pre>
--   &gt;&gt;&gt; setAt (-10) "hello" ["a","b","c","d"]
--   ["a","b","c","d"]
--   
--   &gt;&gt;&gt; setAt 100 "hello" ["a","b","c","d"]
--   ["a","b","c","d"]
--   </pre>
setAt :: forall a. Int -> a -> [a] -> [a]

-- | Update a given value in a list.
--   
--   <pre>
--   &gt;&gt;&gt; overAt 2 (\x -&gt; x ++ x) ["a","b","c","d"]
--   ["a","b","cc","d"]
--   </pre>
--   
--   You can update the first and last values in the list as well:
--   
--   <pre>
--   &gt;&gt;&gt; overAt 0 (\x -&gt; "bye") ["a","b","c","d"]
--   ["bye","b","c","d"]
--   
--   &gt;&gt;&gt; overAt 3 (\x -&gt; "") ["a","b","c","d"]
--   ["a","b","c",""]
--   </pre>
--   
--   If you try to set a value outside of the list, you'll get back the
--   same list:
--   
--   <pre>
--   &gt;&gt;&gt; overAt (-10) (\_ -&gt; "foobar") ["a","b","c","d"]
--   ["a","b","c","d"]
--   
--   &gt;&gt;&gt; overAt 100 (\_ -&gt; "baz") ["a","b","c","d"]
--   ["a","b","c","d"]
--   </pre>
overAt :: forall a. Int -> (a -> a) -> [a] -> [a]
instance GHC.Base.Functor Termonad.Config.Colour.List8
instance Data.Foldable.Foldable Termonad.Config.Colour.List8
instance GHC.Classes.Eq a => GHC.Classes.Eq (Termonad.Config.Colour.List8 a)
instance GHC.Show.Show a => GHC.Show.Show (Termonad.Config.Colour.List8 a)
instance GHC.Base.Functor Termonad.Config.Colour.List6
instance Data.Foldable.Foldable Termonad.Config.Colour.List6
instance GHC.Classes.Eq a => GHC.Classes.Eq (Termonad.Config.Colour.List6 a)
instance GHC.Show.Show a => GHC.Show.Show (Termonad.Config.Colour.List6 a)
instance GHC.Base.Functor Termonad.Config.Colour.List24
instance Data.Foldable.Foldable Termonad.Config.Colour.List24
instance GHC.Classes.Eq a => GHC.Classes.Eq (Termonad.Config.Colour.List24 a)
instance GHC.Show.Show a => GHC.Show.Show (Termonad.Config.Colour.List24 a)
instance Data.Foldable.Foldable Termonad.Config.Colour.Matrix
instance GHC.Base.Functor Termonad.Config.Colour.Matrix
instance GHC.Classes.Eq a => GHC.Classes.Eq (Termonad.Config.Colour.Matrix a)
instance GHC.Show.Show a => GHC.Show.Show (Termonad.Config.Colour.Matrix a)
instance Data.Foldable.Foldable Termonad.Config.Colour.Palette
instance GHC.Base.Functor Termonad.Config.Colour.Palette
instance GHC.Show.Show c => GHC.Show.Show (Termonad.Config.Colour.Palette c)
instance GHC.Classes.Eq c => GHC.Classes.Eq (Termonad.Config.Colour.Palette c)
instance GHC.Base.Functor Termonad.Config.Colour.ColourConfig
instance GHC.Show.Show c => GHC.Show.Show (Termonad.Config.Colour.ColourConfig c)
instance GHC.Classes.Eq c => GHC.Classes.Eq (Termonad.Config.Colour.ColourConfig c)


-- | This module exposes termonad's basic configuration options. To set
--   these options in your config, first ensure you've imported
--   <a>Termonad</a>.
--   
--   Then for your main, apply <a>start</a> or <a>defaultMain</a> to a
--   <a>TMConfig</a> value. We suggest you build such values by performing
--   record updates on the <a>defaultTMConfig</a> rather than using the
--   <a>TMConfig</a> constructor, as the latter is much more likely to
--   break when there are changes to the <a>TMConfig</a> type.
--   
--   E.g.
--   
--   <pre>
--   -- Re-exports this module.
--   import <a>Termonad</a>
--   
--   main :: IO ()
--   main = <tt>start</tt> $ <a>defaultTMConfig</a>
--     { <a>showScrollbar</a> = <a>ShowScrollbarNever</a>
--     , <a>confirmExit</a> = False
--     , <a>showMenu</a> = False
--     , <a>cursorBlinkMode</a> = <a>CursorBlinkModeOff</a>
--     }
--   </pre>
--   
--   Additional options can be found in the following modules.
--   
--   <ul>
--   <li><a>Termonad.Config.Colour</a></li>
--   </ul>
--   
--   If you want to see an example configuration file, as well as an
--   explanation for how to use Termonad, see the Termonad <a>README</a>.
module Termonad.Config

-- | The Termonad <a>ConfigOptions</a> along with the <a>ConfigHooks</a>.
data TMConfig
TMConfig :: !ConfigOptions -> !ConfigHooks -> TMConfig
[options] :: TMConfig -> !ConfigOptions
[hooks] :: TMConfig -> !ConfigHooks

-- | The default <a>TMConfig</a>.
--   
--   <a>options</a> is <a>defaultConfigOptions</a> and <a>hooks</a> is
--   <a>defaultConfigHooks</a>.
defaultTMConfig :: TMConfig

-- | Configuration options for Termonad.
--   
--   See <a>defaultConfigOptions</a> for the default values.
data ConfigOptions
ConfigOptions :: !FontConfig -> !ShowScrollbar -> !Integer -> !Bool -> !Text -> !Bool -> !ShowTabBar -> !CursorBlinkMode -> !Bool -> !Bool -> !Bool -> ConfigOptions

-- | Specific options for fonts.
[fontConfig] :: ConfigOptions -> !FontConfig

-- | When to show the scroll bar.
[showScrollbar] :: ConfigOptions -> !ShowScrollbar

-- | The number of lines to keep in the scroll back history for each
--   terminal.
[scrollbackLen] :: ConfigOptions -> !Integer

-- | Whether or not to ask you for confirmation when closing individual
--   terminals or Termonad itself. It is generally safer to keep this as
--   <a>True</a>.
[confirmExit] :: ConfigOptions -> !Bool

-- | When double-clicking on text in the terminal with the mouse, Termonad
--   will use this value to determine what to highlight. The individual
--   characters in this list will be counted as part of a word.
--   
--   For instance if <a>wordCharExceptions</a> is <tt>""</tt>, then when
--   you double-click on the text <tt>http://</tt>, only the <tt>http</tt>
--   portion will be highlighted. If <a>wordCharExceptions</a> is
--   <tt>":"</tt>, then the <tt>http:</tt> portion will be highlighted.
[wordCharExceptions] :: ConfigOptions -> !Text

-- | Whether or not to show the <tt>File</tt> <tt>Edit</tt> etc menu.
[showMenu] :: ConfigOptions -> !Bool

-- | When to show the tab bar.
[showTabBar] :: ConfigOptions -> !ShowTabBar

-- | How to handle cursor blink.
[cursorBlinkMode] :: ConfigOptions -> !CursorBlinkMode

-- | This option controls whether or not to force bold text to use colors
--   from the <a>ExtendedPalatte</a>.
--   
--   If <a>True</a>, then colored bold text will <i>always</i> use colors
--   from the <a>ExtendedPalatte</a>. There will be no way to print bold
--   text colored with the <a>BasicPalatte</a>.
--   
--   This often isn't a big problem, since many TUI applications use bold
--   in combination with colors from the <a>ExtendedPalatte</a>. Also, the
--   VTE default blue color can be difficult to read with a dark
--   background, and enabling this can work around the problem. See
--   <a>https://github.com/cdepillabout/termonad/issues/177</a> for more
--   information.
--   
--   If <a>False</a>, then bold can be applied separately to colors from
--   both the <a>BasicPalatte</a> and <a>ExtendedPalatte</a>.
[boldIsBright] :: ConfigOptions -> !Bool

-- | Enable SIXEL to draw graphics in a terminal.
--   
--   In order for this option to do anything, you need to be using a
--   version of VTE &gt;= 0.63, and compile VTE with SIXEL support.
--   
--   Note that even if you do the above, there may still be some problems
--   with SIXEL support in VTE. Follow
--   <a>https://gitlab.gnome.org/GNOME/vte/-/issues/253</a> for more
--   information.
[enableSixel] :: ConfigOptions -> !Bool

-- | Allow terminal to use bold text.
--   
--   You may want to disable this, for instance, if you use a font that
--   doesn't look good when bold.
[allowBold] :: ConfigOptions -> !Bool

-- | The default <a>ConfigOptions</a>.
--   
--   <pre>
--   &gt;&gt;&gt; :{
--     let defConfOpt =
--           ConfigOptions
--             { fontConfig = defaultFontConfig
--             , showScrollbar = ShowScrollbarIfNeeded
--             , scrollbackLen = 10000
--             , confirmExit = True
--             , wordCharExceptions = "-#%&amp;+,./=?@\\_~\183:"
--             , showMenu = True
--             , showTabBar = ShowTabBarIfNeeded
--             , cursorBlinkMode = CursorBlinkModeOn
--             , boldIsBright = False
--             , enableSixel = False
--             , allowBold = True
--             }
--     in defaultConfigOptions == defConfOpt
--   :}
--   True
--   </pre>
defaultConfigOptions :: ConfigOptions

-- | Hooks into certain termonad operations and VTE events. Used to modify
--   termonad's behaviour in order to implement new functionality. Fields
--   should have sane <tt>Semigroup</tt> and <tt>Monoid</tt> instances so
--   that config extensions can be combined uniformly and new hooks can be
--   added without incident.
newtype ConfigHooks
ConfigHooks :: (TMState -> Terminal -> IO ()) -> ConfigHooks

-- | Produce an IO action to run on creation of new <tt>Terminal</tt>,
--   given <tt>TMState</tt> and the <tt>Terminal</tt> in question.
[createTermHook] :: ConfigHooks -> TMState -> Terminal -> IO ()

-- | Default values for the <a>ConfigHooks</a>.
--   
--   <ul>
--   <li>The default function for <a>createTermHook</a> is
--   <a>defaultCreateTermHook</a>.</li>
--   </ul>
defaultConfigHooks :: ConfigHooks

-- | The font size for the Termonad terminal. There are two ways to set the
--   fontsize, corresponding to the two different ways to set the font size
--   in the Pango font rendering library.
--   
--   If you're not sure which to use, try <a>FontSizePoints</a> first and
--   see how it looks. It should generally correspond to font sizes you are
--   used to from other applications.
data FontSize

-- | This sets the font size based on "points". The conversion between a
--   point and an actual size depends on the system configuration and the
--   output device. The function <a>fontDescriptionSetSize</a> is used to
--   set the font size. See the documentation for that function for more
--   info.
FontSizePoints :: Int -> FontSize

-- | This sets the font size based on "device units". In general, this can
--   be thought of as one pixel. The function
--   <a>fontDescriptionSetAbsoluteSize</a> is used to set the font size.
--   See the documentation for that function for more info.
FontSizeUnits :: Double -> FontSize

-- | The default <a>FontSize</a> used if not specified.
--   
--   <pre>
--   &gt;&gt;&gt; defaultFontSize
--   FontSizePoints 12
--   </pre>
defaultFontSize :: FontSize

-- | Settings for the font to be used in Termonad.
data FontConfig
FontConfig :: !Text -> !FontSize -> FontConfig

-- | The font family to use. Example: <tt>"DejaVu Sans Mono"</tt> or
--   <tt>"Source Code Pro"</tt>
[fontFamily] :: FontConfig -> !Text

-- | The font size.
[fontSize] :: FontConfig -> !FontSize

-- | The default <a>FontConfig</a> to use if not specified.
--   
--   <pre>
--   &gt;&gt;&gt; defaultFontConfig == FontConfig {fontFamily = "Monospace", fontSize = defaultFontSize}
--   True
--   </pre>
defaultFontConfig :: FontConfig

-- | This data type represents an option that can either be <a>Option</a>
--   or <a>Unset</a>.
--   
--   This data type is used in situations where leaving an option unset
--   results in a special state that is not representable by setting any
--   specific value.
--   
--   Examples of this include the <tt>cursorFgColour</tt> and
--   <tt>cursorBgColour</tt> options supplied by the <tt>ColourConfig</tt>
--   <tt>ConfigExtension</tt>. By default, <tt>cursorFgColour</tt> and
--   <tt>cursorBgColour</tt> are both <a>Unset</a>. However, when
--   <tt>cursorBgColour</tt> is <a>Option</a>, <tt>cursorFgColour</tt>
--   defaults to the color of the text underneath. There is no way to
--   represent this by setting <tt>cursorFgColour</tt>.
data Option a
Unset :: Option a
Set :: !a -> Option a

-- | Whether or not to show the scroll bar in a terminal.
data ShowScrollbar

-- | Never show the scroll bar, even if there are too many lines on the
--   terminal to show all at once. You should still be able to scroll with
--   the mouse wheel.
ShowScrollbarNever :: ShowScrollbar

-- | Always show the scrollbar, even if it is not needed.
ShowScrollbarAlways :: ShowScrollbar

-- | Only show the scrollbar if there are too many lines on the terminal to
--   show all at once.
ShowScrollbarIfNeeded :: ShowScrollbar

-- | Whether or not to show the tab bar for switching tabs.
data ShowTabBar

-- | Never show the tab bar, even if there are multiple tabs open. This may
--   be confusing if you plan on using multiple tabs.
ShowTabBarNever :: ShowTabBar

-- | Always show the tab bar, even if you only have one tab open.
ShowTabBarAlways :: ShowTabBar

-- | Only show the tab bar if you have multiple tabs open.
ShowTabBarIfNeeded :: ShowTabBar

-- | An enumerated type which can be used to indicate the cursor blink mode
--   for the terminal.
data () => CursorBlinkMode

-- | Follow GTK+ settings for cursor blinking.
CursorBlinkModeSystem :: CursorBlinkMode

-- | Cursor blinks.
CursorBlinkModeOn :: CursorBlinkMode

-- | Cursor does not blink.
CursorBlinkModeOff :: CursorBlinkMode

-- | Catch-all for unknown values
AnotherCursorBlinkMode :: Int -> CursorBlinkMode

-- | Read the configuration for the preferences file
--   <tt>~/.config/termonad/termonad.yaml</tt>. This file stores only the
--   <a>options</a> of <a>TMConfig</a> so <a>hooks</a> are initialized with
--   <a>defaultConfigHooks</a>. If the file doesn't exist, create it with
--   the default values.
--   
--   Any options that do not exist will get initialized with values from
--   <a>defaultConfigOptions</a>.
tmConfigFromPreferencesFile :: IO TMConfig

module Termonad.XML
interfaceDoc :: Document
interfaceText :: Text
menuDoc :: Document
menuText :: Text
aboutDoc :: Document
aboutText :: Text
closeTabDoc :: Document
closeTabText :: Text
preferencesText :: Text

module Termonad.App
setupScreenStyle :: IO ()
createFontDescFromConfig :: TMConfig -> IO FontDescription
createFontDesc :: FontSize -> Text -> IO FontDescription
setFontDescSize :: FontDescription -> FontSize -> IO ()
adjustFontDescSize :: (FontSize -> FontSize) -> FontDescription -> IO ()
modifyFontSizeForAllTerms :: (FontSize -> FontSize) -> TMState -> IO ()
fontSizeFromFontDescription :: FontDescription -> IO FontSize
fontConfigFromFontDescription :: FontDescription -> IO (Maybe FontConfig)
compareScrolledWinAndTab :: ScrolledWindow -> TMNotebookTab -> Bool
updateFLTabPos :: TMState -> Int -> Int -> IO ()

-- | Try to figure out whether Termonad should exit. This also used to
--   figure out if Termonad should close a given terminal.
--   
--   This reads the <a>confirmExit</a> setting from <a>ConfigOptions</a> to
--   check whether the user wants to be notified when either Termonad or a
--   given terminal is about to be closed.
--   
--   If <a>confirmExit</a> is <a>True</a>, then a dialog is presented to
--   the user asking them if they really want to exit or close the
--   terminal. Their response is sent back as a <a>ResponseType</a>.
--   
--   If <a>confirmExit</a> is <a>False</a>, then this function always
--   returns <a>ResponseTypeYes</a>.
askShouldExit :: TMState -> IO ResponseType

-- | Force Termonad to exit without asking the user whether or not to do
--   so.
forceQuit :: TMState -> IO ()
setupTermonad :: TMConfig -> Application -> ApplicationWindow -> Builder -> IO ()
appActivate :: TMConfig -> Application -> IO ()
showAboutDialog :: Application -> IO ()
showFindDialog :: Application -> IO (Maybe Text)
doFind :: TMState -> IO ()
findAbove :: TMState -> IO ()
findBelow :: TMState -> IO ()
setShowMenuBar :: Application -> Bool -> IO ()

-- | Fill a combo box with ids and labels
--   
--   The ids are stored in the combobox as <a>Text</a>, so their type
--   should be an instance of the <a>Show</a> type class.
comboBoxFill :: forall a. Show a => ComboBoxText -> [(a, Text)] -> IO ()

-- | Set the current active item in a combobox given an input id.
comboBoxSetActive :: Show a => ComboBoxText -> a -> IO ()

-- | Get the current active item in a combobox
--   
--   The list of values to be searched in the combobox must be given as a
--   parameter. These values are converted to Text then compared to the
--   current id.
comboBoxGetActive :: forall a. (Show a, Enum a) => ComboBoxText -> [a] -> IO (Maybe a)
applyNewPreferences :: TMState -> IO ()
applyNewPreferencesToTab :: TMState -> TMNotebookTab -> IO ()

-- | Show the preferences dialog.
--   
--   When the user clicks on the Ok button, it copies the new settings to
--   TMState. Then apply them to the current terminals.
showPreferencesDialog :: TMState -> IO ()
appStartup :: Application -> IO ()

-- | Run Termonad with the given <a>TMConfig</a>.
--   
--   Do not perform any of the recompilation operations that the
--   <a>defaultMain</a> function does.
start :: TMConfig -> IO ()

-- | Run Termonad with the given <a>TMConfig</a>.
--   
--   This function will check if there is a
--   <tt>~/.config/termonad/termonad.hs</tt> file and a
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> binary. Termonad will
--   perform different actions based on whether or not these two files
--   exist.
--   
--   Here are the four different possible actions based on the existence of
--   these two files.
--   
--   <ul>
--   <li><tt>~/.config/termonad/termonad.hs</tt> exists,
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> existsThe timestamps
--   of these two files are checked. If the
--   <tt>~/.config/termonad/termonad.hs</tt> file has been modified after
--   the <tt>~/.cache/termonad/termonad-linux-x86_64</tt> binary, then
--   Termonad will use GHC to recompile the
--   <tt>~/.config/termonad/termonad.hs</tt> file, producing a new binary
--   at <tt>~/.cache/termonad/termonad-linux-x86_64</tt>. This new binary
--   will be re-executed. The <a>TMConfig</a> passed to this
--   <a>defaultMain</a> will be effectively thrown away.If GHC fails to
--   recompile the <tt>~/.config/termonad/termonad.hs</tt> file, then
--   Termonad will just execute <a>start</a> with the <a>TMConfig</a>
--   passed in.If the <tt>~/.cache/termonad/termonad-linux-x86_64</tt>
--   binary has been modified after the
--   <tt>~/.config/termonad/termonad.hs</tt> file, then Termonad will
--   re-exec the <tt>~/.cache/termonad/termonad-linux-x86_64</tt> binary.
--   The <a>TMConfig</a> passed to this <a>defaultMain</a> will be
--   effectively thrown away.</li>
--   <li><tt>~/.config/termonad/termonad.hs</tt> exists,
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> does not
--   existTermonad will use GHC to recompile the
--   <tt>~/.config/termonad/termonad.hs</tt> file, producing a new binary
--   at <tt>~/.cache/termonad/termonad-linux-x86_64</tt>. This new binary
--   will be re-executed. The <a>TMConfig</a> passed to this
--   <a>defaultMain</a> will be effectively thrown away.If GHC fails to
--   recompile the <tt>~/.config/termonad/termonad.hs</tt> file, then
--   Termonad will just execute <a>start</a> with the <a>TMConfig</a>
--   passed in.</li>
--   <li><tt>~/.config/termonad/termonad.hs</tt> does not exist,
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> existsTermonad will
--   ignore the <tt>~/.cache/termonad/termonad-linux-x86_64</tt> binary and
--   just run <a>start</a> with the <a>TMConfig</a> passed to this
--   function.</li>
--   <li><tt>~/.config/termonad/termonad.hs</tt> does not exist,
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> does not
--   existTermonad will run <a>start</a> with the <a>TMConfig</a> passed to
--   this function.</li>
--   </ul>
--   
--   Other notes:
--   
--   <ol>
--   <li>That the locations of <tt>~/.config/termonad/termonad.hs</tt> and
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> may differ depending
--   on your system.</li>
--   <li>In your own <tt>~/.config/termonad/termonad.hs</tt> file, you can
--   use either <a>defaultMain</a> or <a>start</a>. As long as you always
--   execute the system-wide <tt>termonad</tt> binary (instead of the
--   binary produced as <tt>~/.cache/termonad/termonad-linux-x86_64</tt>),
--   the effect should be the same.</li>
--   </ol>
defaultMain :: TMConfig -> IO ()


-- | This module exposes termonad's basic configuration options, as well as
--   <a>defaultMain</a>.
--   
--   If you want to configure Termonad, please take a look at
--   <a>Termonad.Config</a>.
module Termonad

-- | Run Termonad with the given <a>TMConfig</a>.
--   
--   This function will check if there is a
--   <tt>~/.config/termonad/termonad.hs</tt> file and a
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> binary. Termonad will
--   perform different actions based on whether or not these two files
--   exist.
--   
--   Here are the four different possible actions based on the existence of
--   these two files.
--   
--   <ul>
--   <li><tt>~/.config/termonad/termonad.hs</tt> exists,
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> existsThe timestamps
--   of these two files are checked. If the
--   <tt>~/.config/termonad/termonad.hs</tt> file has been modified after
--   the <tt>~/.cache/termonad/termonad-linux-x86_64</tt> binary, then
--   Termonad will use GHC to recompile the
--   <tt>~/.config/termonad/termonad.hs</tt> file, producing a new binary
--   at <tt>~/.cache/termonad/termonad-linux-x86_64</tt>. This new binary
--   will be re-executed. The <a>TMConfig</a> passed to this
--   <a>defaultMain</a> will be effectively thrown away.If GHC fails to
--   recompile the <tt>~/.config/termonad/termonad.hs</tt> file, then
--   Termonad will just execute <a>start</a> with the <a>TMConfig</a>
--   passed in.If the <tt>~/.cache/termonad/termonad-linux-x86_64</tt>
--   binary has been modified after the
--   <tt>~/.config/termonad/termonad.hs</tt> file, then Termonad will
--   re-exec the <tt>~/.cache/termonad/termonad-linux-x86_64</tt> binary.
--   The <a>TMConfig</a> passed to this <a>defaultMain</a> will be
--   effectively thrown away.</li>
--   <li><tt>~/.config/termonad/termonad.hs</tt> exists,
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> does not
--   existTermonad will use GHC to recompile the
--   <tt>~/.config/termonad/termonad.hs</tt> file, producing a new binary
--   at <tt>~/.cache/termonad/termonad-linux-x86_64</tt>. This new binary
--   will be re-executed. The <a>TMConfig</a> passed to this
--   <a>defaultMain</a> will be effectively thrown away.If GHC fails to
--   recompile the <tt>~/.config/termonad/termonad.hs</tt> file, then
--   Termonad will just execute <a>start</a> with the <a>TMConfig</a>
--   passed in.</li>
--   <li><tt>~/.config/termonad/termonad.hs</tt> does not exist,
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> existsTermonad will
--   ignore the <tt>~/.cache/termonad/termonad-linux-x86_64</tt> binary and
--   just run <a>start</a> with the <a>TMConfig</a> passed to this
--   function.</li>
--   <li><tt>~/.config/termonad/termonad.hs</tt> does not exist,
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> does not
--   existTermonad will run <a>start</a> with the <a>TMConfig</a> passed to
--   this function.</li>
--   </ul>
--   
--   Other notes:
--   
--   <ol>
--   <li>That the locations of <tt>~/.config/termonad/termonad.hs</tt> and
--   <tt>~/.cache/termonad/termonad-linux-x86_64</tt> may differ depending
--   on your system.</li>
--   <li>In your own <tt>~/.config/termonad/termonad.hs</tt> file, you can
--   use either <a>defaultMain</a> or <a>start</a>. As long as you always
--   execute the system-wide <tt>termonad</tt> binary (instead of the
--   binary produced as <tt>~/.cache/termonad/termonad-linux-x86_64</tt>),
--   the effect should be the same.</li>
--   </ol>
defaultMain :: TMConfig -> IO ()

-- | Run Termonad with the given <a>TMConfig</a>.
--   
--   Do not perform any of the recompilation operations that the
--   <a>defaultMain</a> function does.
start :: TMConfig -> IO ()
