Subject: Re: Functional programming From: Erik Naggum <email@example.com> Date: 1999/11/10 Newsgroups: comp.lang.lisp Message-ID: <firstname.lastname@example.org> * Tord Kallqvist Romstad | This works, of course, but I thought matt meant that all the functions in | list-of-functions should be used on the same argument (in his example, a | news article). Having to construct a list of copies of this single | argument of the same length as the list of functions seems very | inconvenient. it would indeed, so we don't. given this very useful function: (defun circular-list (arg &rest args) (let ((car (list arg))) (nconc car args car))) for a single argument, the answer is simply this: (mapcar #'funcall <list-of-functions> (circular-list <arg>)) for a list of arguments, it gets just a _little_ hairier: (apply #'mapcar #'funcall <list-of-functions> (mapcar #'circular-list <arguments>)) but it's OK to be a little afraid of this code until you figure it out. #:Erik :) -- Attention Microsoft Shoppers! MS Monopoly Money 6.0 are now worthless.