CLHS: Function MAKUNBOUND

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Function MAKUNBOUND

Syntax:

makunbound symbol => symbol

Arguments and Values:

symbol---a symbol

Description:

Makes the symbol be unbound, regardless of whether it was previously bound.

Examples:

     (setf (symbol-value 'a) 1)
     (boundp 'a) =>  true
     a =>  1
     (makunbound 'a) =>  A
     (boundp 'a) =>  false

Side Effects:

The value cell of symbol is modified.

Affected By: None.

Exceptional Situations:

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

See Also:

boundp, fmakunbound

Notes: None.

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