| |
ANSI Common Lisp  14 Conses 14.2 Dictionary of Conses
- Syntax:
-
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
- 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))
- Allegro CL Implementation Details:
-
None.
|
