remove_set_function
remove_set_function — removes a set function from a
symbol.
Syntax
remove_set_function (symbol, s_exp)
Arguments
- symbol
- The symbol from which to remove the
expression.
- s_exp
- An expression set for the symbol, such as that added by add_set_function.
Returns
The expression, in Lisp syntax, which was removed, or nil if none was
removed.
Description
This function removes a set expression from the
symbol. The
s_exp is compared to all of the
current expression set for the
symbol using the comparison
function eq.
Example
Gamma> b = 5;
5
Gamma> add_set_function(#b,#princ("changed\n"));
(princ "changed\n")
Gamma> b = 4;
changed
4
Gamma> remove_set_function(#b,#princ("changed\n"));
(princ "changed\n")
Gamma> b = 3;
3
Gamma>
