From ... Path: archiver1.google.com!news1.google.com!newsfeed.stanford.edu!news-spur1.maxwell.syr.edu!news.maxwell.syr.edu!newsfeed.icl.net!newsfeed.fjserv.net!diablo.netcom.net.uk!netcom.net.uk!news.tele.dk!small.news.tele.dk!129.240.148.23!uio.no!nntp.uio.no!ifi.uio.no!not-for-mail From: Erik Naggum Newsgroups: comp.lang.lisp Subject: Re: good lisp style ? Date: 22 Aug 2002 14:42:55 +0000 Organization: Naggum Software, Oslo, Norway Lines: 16 Message-ID: <3239016175883788@naggum.no> References: <3D64D77F.FDA2059D@in.the.newsgroup> <2hwuqjawth.fsf@vserver.cs.uit.no> <3D64E80F.6E61C900@in.the.newsgroup> <2hsn17at6z.fsf@vserver.cs.uit.no> Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: maud.ifi.uio.no 1030027376 11209 129.240.64.16 (22 Aug 2002 14:42:56 GMT) X-Complaints-To: abuse@ifi.uio.no NNTP-Posting-Date: 22 Aug 2002 14:42:56 GMT Mail-Copies-To: never User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 Xref: archiver1.google.com comp.lang.lisp:38513 * Frode Vatvedt Fjeld | Come to think of it, is mapcar really guaranteed to return a fresh | list? Yes. For two reasons: (1) The values is collects into a list are all fresh as far as mapcar is concerned. (2) Where would it find the old cons cells to use? It would be really stupid to use `mapcan´ or `mapcon´ with a function that returned old cons cells, however. -- Erik Naggum, Oslo, Norway Act from reason, and failure makes you rethink and study harder. Act from faith, and failure makes you blame someone and push harder.