From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Thierry Volpiatto Newsgroups: gmane.emacs.help Subject: Re: Adding Lists/Sequences Date: Wed, 24 Sep 2008 17:31:58 +0200 Message-ID: <87iqsl8sr5.fsf@thievol.homelinux.org> References: <3b97cca7-1c31-4e07-ba09-f0aeca96019c@34g2000hsh.googlegroups.com> <85r67apl6z.fsf@lola.goethe.zz> <877i92qauj.fsf@thievol.homelinux.org> <873ajprhpp.fsf@thievol.homelinux.org> <004a01c91e54$f1f940a0$0200a8c0@us.oracle.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1222269853 21776 80.91.229.12 (24 Sep 2008 15:24:13 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 24 Sep 2008 15:24:13 +0000 (UTC) Cc: help-gnu-emacs@gnu.org, 'David Kastrup' To: "Drew Adams" Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Sep 24 17:25:01 2008 connect(): Connection refused Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1KiWDk-0005qf-AW for geh-help-gnu-emacs@m.gmane.org; Wed, 24 Sep 2008 17:24:04 +0200 Original-Received: from localhost ([127.0.0.1]:60632 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KiWCh-00078u-Qn for geh-help-gnu-emacs@m.gmane.org; Wed, 24 Sep 2008 11:22:59 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1KiWCO-00078n-6g for help-gnu-emacs@gnu.org; Wed, 24 Sep 2008 11:22:40 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1KiWCK-00078J-Id for help-gnu-emacs@gnu.org; Wed, 24 Sep 2008 11:22:39 -0400 Original-Received: from [199.232.76.173] (port=53030 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KiWCK-00078G-8s for help-gnu-emacs@gnu.org; Wed, 24 Sep 2008 11:22:36 -0400 Original-Received: from nf-out-0910.google.com ([64.233.182.190]:45561) by monty-python.gnu.org with esmtp (Exim 4.60) (envelope-from ) id 1KiWCJ-0005vp-Ux for help-gnu-emacs@gnu.org; Wed, 24 Sep 2008 11:22:36 -0400 Original-Received: by nf-out-0910.google.com with SMTP id c7so1011269nfi.26 for ; Wed, 24 Sep 2008 08:22:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=gamma; h=domainkey-signature:received:received:from:to:cc:subject:references :date:in-reply-to:message-id:user-agent:mime-version:content-type; bh=oqLyGfKpmIucXL9KurdXYl2z5hSJNvkyU3j0MbO97bA=; b=iCzq2OsoE7f6KJ8I0/MyVfrdY67mxVHQbxehvVu3euMtZI/5QAxgFQxBeSKd9sMUPy Miz1NRTFZy5h1yfA3rOI2MZWtIHZ90v8QSGKUDiaL+gaMXPHdFzo7vdSfI1bWtkKKU/W 4PBjumjvUK2tl0LfEB176KQJEcfyOSAs0qQHg= DomainKey-Signature: a=rsa-sha1; c=nofws; d=gmail.com; s=gamma; h=from:to:cc:subject:references:date:in-reply-to:message-id :user-agent:mime-version:content-type; b=pi90jbGV+dQE53XipiSxUvHOsatcLtAH+BJGnMSQb33/udVV8Y6tUX/UjxJwdIXa8P zeuNz0ZBx4WFe0+5LlwtrYB3FKnj3WdkTWVqGZu0o6u1R6qBjgx5epmYMQOevEtV6u0b zfA2HRcEtzCTdG2Kd2sxKVVRrS12L9NXMDgR0= Original-Received: by 10.103.239.5 with SMTP id q5mr4891352mur.58.1222269752358; Wed, 24 Sep 2008 08:22:32 -0700 (PDT) Original-Received: from thievol.homelinux.org (9.77.197-77.rev.gaoland.net [77.197.77.9]) by mx.google.com with ESMTPS id e10sm3971440muf.14.2008.09.24.08.22.30 (version=TLSv1/SSLv3 cipher=RC4-MD5); Wed, 24 Sep 2008 08:22:31 -0700 (PDT) In-Reply-To: <004a01c91e54$f1f940a0$0200a8c0@us.oracle.com> (Drew Adams's message of "Wed, 24 Sep 2008 07:50:48 -0700") User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.0.60 (gnu/linux) X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6 (newer, 2) X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:58013 Archived-At: "Drew Adams" writes: >>> explain when it is good (if it is) to use these destructive functions. >> >> Generally, speed. Non-destructive operations often create >> or copy a lot of new cons cells. > > Or when you want to share Lisp structure. A special case is a circular > structure, which shares part(s) of itself with itself. > Can you provide a small example ? -- A + Thierry Volpiatto Location: Saint-Cyr-Sur-Mer - France