From mboxrd@z Thu Jan  1 00:00:00 1970
Path: news.gmane.org!not-for-mail
From: Barry Margolin <barmar@alum.mit.edu>
Newsgroups: gmane.emacs.help
Subject: Re: 'length' function for lists and cons cells?
Date: Fri, 22 Mar 2013 03:45:09 -0400
Organization: A noiseless patient Spider
Message-ID: <barmar-7BD019.03450922032013@news.eternal-september.org>
References: <mailman.22586.1363890109.855.help-gnu-emacs@gnu.org>
	<87sj3opjfw.fsf@kuiper.lan.informatimago.com>
	<mailman.22618.1363919920.855.help-gnu-emacs@gnu.org>
NNTP-Posting-Host: plane.gmane.org
X-Trace: ger.gmane.org 1363953859 21515 80.91.229.3 (22 Mar 2013 12:04:19 GMT)
X-Complaints-To: usenet@ger.gmane.org
NNTP-Posting-Date: Fri, 22 Mar 2013 12:04:19 +0000 (UTC)
To: help-gnu-emacs@gnu.org
Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Mar 22 13:04:46 2013
Return-path: <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>
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 <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1UJ0i6-0005Ab-ES
	for geh-help-gnu-emacs@m.gmane.org; Fri, 22 Mar 2013 13:04:38 +0100
Original-Received: from localhost ([::1]:32895 helo=lists.gnu.org)
	by lists.gnu.org with esmtp (Exim 4.71)
	(envelope-from <help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org>)
	id 1UJ0hj-0008RX-1X
	for geh-help-gnu-emacs@m.gmane.org; Fri, 22 Mar 2013 08:04:15 -0400
Original-Path: usenet.stanford.edu!goblin1!goblin2!goblin.stu.neva.ru!feeder.erje.net!eu.feeder.erje.net!eternal-september.org!feeder.eternal-september.org!mx05.eternal-september.org!.POSTED!not-for-mail
Original-Newsgroups: gnu.emacs.help
Original-Lines: 17
Injection-Info: mx05.eternal-september.org;
	posting-host="2be9e9f5dd9af768b8861af71b85fc28"; 
	logging-data="20449"; mail-complaints-to="abuse@eternal-september.org";
	posting-account="U2FsdGVkX18eTBH8AGfswFKXBqIF8LwP"
User-Agent: MT-NewsWatcher/3.5.3b3 (Intel Mac OS X)
Cancel-Lock: sha1:tpn6dmbCQ5pS70moV6C0E//vyPQ=
Original-Xref: usenet.stanford.edu gnu.emacs.help:197384
X-Mailman-Approved-At: Fri, 22 Mar 2013 08:04:04 -0400
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 <help-gnu-emacs.gnu.org>
List-Unsubscribe: <https://lists.gnu.org/mailman/options/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=unsubscribe>
List-Archive: <http://lists.gnu.org/archive/html/help-gnu-emacs>
List-Post: <mailto:help-gnu-emacs@gnu.org>
List-Help: <mailto:help-gnu-emacs-request@gnu.org?subject=help>
List-Subscribe: <https://lists.gnu.org/mailman/listinfo/help-gnu-emacs>,
	<mailto:help-gnu-emacs-request@gnu.org?subject=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:89663
Archived-At: <http://permalink.gmane.org/gmane.emacs.help/89663>

In article <mailman.22618.1363919920.855.help-gnu-emacs@gnu.org>,
 Thorsten Jolitz <tjolitz@gmail.com> wrote:

> "Pascal J. Bourguignon" <pjb@informatimago.com> writes:
> 
> > I don't understand what you want to do.
> 
> well, avoid the errors I get when mapping alists with true lists and
> cons cells as elements with functions like 'lenght of 'cdr etc. 

Don't give dotted lists to functions that are supposed to map over them 
in the first place.

-- 
Barry Margolin, barmar@alum.mit.edu
Arlington, MA
*** PLEASE post questions in newsgroups, not directly to me ***