fmakunbound

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ANSI Common Lisp 5 Data and Control Flow 5.3 Dictionary of Data and Control Flow

5.3.5 fmakunbound Function

Syntax:

fmakunbound name name

Pronunciation:

[ _'ef'makEn_'baünd ] or [ _'ef'mâkEn_'baünd ]

Arguments and Values:

name - a function name.

Description:

Removes the function or macro definition, if any, of name in the global environment.

Examples:

(defun add-some (x) (+ x 19)) ADD-SOME
 (fboundp 'add-some) true
 (flet ((add-some (x) (+ x 37)))
 (fmakunbound 'add-some)
 (add-some 1)) 38
 (fboundp 'add-some) false

Exceptional Situations:

Should signal an error of type type-error if name is not a function name.

The consequences are undefined if name is a special operator.

See Also:

fboundp, makunbound

Allegro CL Implementation Details:

None.

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