streamp object → generalized-boolean

object — an object.

generalized-boolean — a generalized boolean.

Returns true if object is of type stream; otherwise, returns false.

streamp is unaffected by whether object, if it is a stream, is open or closed.

(streamp *terminal-io*) → true 
(streamp 1) → false

(streamp object) ≡ (typep object 'stream)