From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stephen Berman Newsgroups: gmane.emacs.help Subject: Re: 'length' function for lists and cons cells? Date: Thu, 21 Mar 2013 21:02:48 +0100 Message-ID: <87ip4kfrmf.fsf@rosalinde.fritz.box> References: <87620k7gwm.fsf@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1363896341 26267 80.91.229.3 (21 Mar 2013 20:05:41 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 21 Mar 2013 20:05:41 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Mar 21 21:06:06 2013 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1UIlkU-0000Ki-AW for geh-help-gnu-emacs@m.gmane.org; Thu, 21 Mar 2013 21:06:06 +0100 Original-Received: from localhost ([::1]:37656 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UIlk6-0004mq-VO for geh-help-gnu-emacs@m.gmane.org; Thu, 21 Mar 2013 16:05:42 -0400 Original-Received: from eggs.gnu.org ([208.118.235.92]:35180) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UIlhZ-0000KE-9e for help-gnu-emacs@gnu.org; Thu, 21 Mar 2013 16:03:11 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1UIlhS-0002gS-W7 for help-gnu-emacs@gnu.org; Thu, 21 Mar 2013 16:03:05 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:40306) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1UIlhS-0002g8-P7 for help-gnu-emacs@gnu.org; Thu, 21 Mar 2013 16:02:58 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1UIlho-0006up-M4 for help-gnu-emacs@gnu.org; Thu, 21 Mar 2013 21:03:20 +0100 Original-Received: from i59f56853.versanet.de ([89.245.104.83]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 21 Mar 2013 21:03:20 +0100 Original-Received: from stephen.berman by i59f56853.versanet.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 21 Mar 2013 21:03:20 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 14 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: i59f56853.versanet.de User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:89638 Archived-At: On Thu, 21 Mar 2013 19:21:29 +0100 Thorsten Jolitz wrote: > Hi List, > > which function could I use when I map an alist e.g. with dolist, that > contains both types of associations as shown below: cons cells, or lists > with 3 or more elements? > > 'length' doesn't work on cons cells: Since a cons cells always contains exactly two members (its car and its cdr), why do you want to call a function to find its length? Steve Berman