《通链参考手册》


Function FMAKUNBOUND

●语法设定:

fmakunbound name => name

●发音:

[,ef'makuhn,band] or [,ef'maykuhn,band]

●参数和值:

name---a function name.

●详情:

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

●例子:

(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

●副作用: None.

●受制于: 无。

●例外情况:

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.

●更多信息:

fboundp, makunbound

●说明: 无。


X3J13设计清单非标准部分,可查下面章节:


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