Apropos

makunboundFunction

    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