makunbound (Function)

Syntax:

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