when_set_fns

Arguments

Returns

The expressions, in Lisp syntax, that have been set to be evaluated whenever the symbol's value changes.

Example

    Gamma> b = 5;
    5
    Gamma> add_set_function(#b,#princ("Changed.\n"));
    (princ "Changed.\n")
    Gamma> add_set_function(#b,#princ("Update now.\n"));
    (princ "Update now.\n")
    Gamma> b = 4;
    Update now.
    Changed.
    4
    Gamma> when_set_fns(#b);
    ((princ "Update now.\n") (princ "Changed.\n"))
    Gamma>  

See Also

add_set_function, remove_set_function