Subject: Re: detecting circular lists From: Erik Naggum <erik@naggum.net> Date: 2000/08/20 Newsgroups: comp.lang.lisp Message-ID: <3175783095888690@naggum.net> * nicknews@ptcstudios.com | Is there a Common Lisp function that detects whether or not a list | is circular? The function list-length returns the length of a proper list, or nil when applied to a circular list. #:Erik -- If this is not what you expected, please alter your expectations.