`size'
------

size(VECT|MAT)
     :: `[VECT ̒]' ܂ `[MAT ̍s,MAT ̗]'.

RETURN
     Xg
VECT
     xNg
MAT
     s

   * VECT , MAT ̃TCYXgŏo͂.
   * LIST ̃TCY `length()', LɌP̐ 
     `nmono()' p.

     [0] A = newvect(4);
     [ 0 0 0 0 ]
     [1] size(A);
     [4]
     [2] B = newmat(2,3,[[1,2,3],[4,5,6]]);
     [ 1 2 3 ]
     [ 4 5 6 ]
     [3] size(B);
     [2,3]

Q
     `length', `nmono'

