ASSOC-KEYWORD.html -- ACL2 Version 6.3

### ASSOC-KEYWORD

look up key in a `keyword-value-listp`

    Major Section:  ACL2-BUILT-INS

If `l` is a list of even length of the form `(k1 a1 k2 a2 ... kn an)`, where each `ki` is a keyword, then `(assoc-keyword key l)` is the first tail of `l` starting with `key` if key is some `ki`, and is `nil` otherwise.

The guard for `(assoc-keyword key l)` is `(keyword-value-listp l)`.

To see the ACL2 definition of this function, see pf.