#### 14.2.17 listp [Function] ¶

`listp` object ⇒ generalized-boolean

#### Arguments and Values:: ¶

object—an object.

generalized-boolean—a generalized boolean.

#### Description:: ¶

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

#### Examples:: ¶

     (listp nil) ⇒  true
     (listp (cons 1 2)) ⇒  true
     (listp (make-array 6)) ⇒  false
     (listp t) ⇒  false

#### See Also:: ¶

consp [Function]

#### Notes:: ¶

If object is a cons, listp does not check whether object is a proper list; it returns true for any kind of list.

     (listp object) ≡ (typep object 'list) ≡ (typep object '(or cons null))