Hello, Below is a code for, potentially useful macro for emacs, similar to the complement function in common lisp. It takes a function of any number of arguments and returns a function which is the complement of that function.
(defmacro complement (fn) `(lambda (&rest args) (not (apply ,fn args)))) -- Surendra Singhi www.public.asu.edu/~sksinghi/ "O thou my friend! The prosperity of Crime is like unto the lightning, whose traitorous brilliancies embellish the atmosphere but for an instant, in order to hurl into death's very depths the luckless one they have dazzled." -- Marquis de Sade _______________________________________________ Emacs-devel mailing list Emacs-devel@gnu.org http://lists.gnu.org/mailman/listinfo/emacs-devel
