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ANSI Common Lisp  5 Data and Control Flow 5.3 Dictionary of Data and Control Flow
- Syntax:
-
identity
object
 object
- Arguments and Values:
-
object - an object.
- Description:
-
Returns its argument object.
- Examples:
-
(identity 101) 101
(mapcan #'identity (list (list 1 2 3) '(4 5 6))) (1 2 3 4 5 6)
- Notes:
-
identity is intended for use with functions that require
a function as an argument.
(eql x (identity x)) returns true for all possible values of x,
but (eq x (identity x)) might return false when x is a number
or character.
identity could be defined by
(defun identity (x) x)
- Allegro CL Implementation Details:
-
None.
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