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fboundp Data and Control Flow Dictionary flet
Function

fmakunbound

fmakunbound name ⇒ name

Pronunciation

pronounced ,ef ’mak e n,baund or pronounced ,ef ’m\=a k e n,baund

Arguments and Values

namea 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

Backlinks

Data and Control Flow Dictionary, fboundp, fdefinition, Function Forms, makunbound, symbol-function, symbol, Symbols in the COMMON-LISP Package