makunbound

makunbound Function

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.

Exceptional Situations:

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

See Also:

boundp, fmakunbound

Expanded Reference: makunbound

tip

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(makunbound )