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)
Side Effects: None.
Affected By: None.
Exceptional Situations: None.
See Also: None.
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)
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