object—an object.
generalized-boolean—a generalized boolean.
Returns true if object is of type array
;
otherwise, returns false.
(arrayp (make-array '(2 3 4) :adjustable t)) → true (arrayp (make-array 6)) → true (arrayp #*1011) → true (arrayp "hi") → true (arrayp 'hi) → false (arrayp 12) → false
(arrayp object) ≡ (typep object 'array)