From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Thien-Thi Nguyen Newsgroups: gmane.emacs.devel Subject: Re: lists.texi Date: 21 Jun 2005 12:35:39 -0400 Message-ID: References: <200506182319.j5INJWF08937@raven.dms.auburn.edu> <200506190015.j5J0FQk09223@raven.dms.auburn.edu> <200506190037.j5J0b9Y09287@raven.dms.auburn.edu> <200506191747.j5JHlha11521@raven.dms.auburn.edu> <200506202312.j5KNCct19091@raven.dms.auburn.edu> NNTP-Posting-Host: main.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: sea.gmane.org 1119371894 17901 80.91.229.2 (21 Jun 2005 16:38:14 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Tue, 21 Jun 2005 16:38:14 +0000 (UTC) Cc: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Jun 21 18:38:11 2005 Return-path: Original-Received: from lists.gnu.org ([199.232.76.165]) by ciao.gmane.org with esmtp (Exim 4.43) id 1DklkY-0004zA-9Q for ged-emacs-devel@m.gmane.org; Tue, 21 Jun 2005 18:37:22 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1DkloY-0007J5-ME for ged-emacs-devel@m.gmane.org; Tue, 21 Jun 2005 12:41:30 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1Dklmo-0006i4-SL for emacs-devel@gnu.org; Tue, 21 Jun 2005 12:39:43 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1Dklmf-0006bB-G8 for emacs-devel@gnu.org; Tue, 21 Jun 2005 12:39:34 -0400 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Dklmd-0006Z0-Mq for emacs-devel@gnu.org; Tue, 21 Jun 2005 12:39:31 -0400 Original-Received: from [207.245.121.138] (helo=mail.agora-net.com) by monty-python.gnu.org with esmtp (TLS-1.0:RSA_ARCFOUR_SHA:16) (Exim 4.34) id 1Dklm6-0006mt-KO for emacs-devel@gnu.org; Tue, 21 Jun 2005 12:38:58 -0400 Original-Received: from ttn by mail.agora-net.com with local (Exim 4.34) id 1Dklit-0005yh-68; Tue, 21 Jun 2005 12:35:39 -0400 Original-To: Luc Teirlinck In-Reply-To: <200506202312.j5KNCct19091@raven.dms.auburn.edu> Original-Lines: 15 User-Agent: Gnus/5.09 (Gnus v5.9.0) Emacs/21.2 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:39235 X-Report-Spam: http://spam.gmane.org/gmane.emacs.devel:39235 Luc Teirlinck writes: > (defun ring-elements (ring) > "Return a list of the elements of RING in order, newest first." > (let (lst) > (dotimes (var (ring-length ring)) > (push (ring-ref ring var) lst)) > (nreverse lst))) an index of -1 returns the "oldest" element. so you could just `(ring-ref ring -1)' until the ring is exhausted, obviating both `nreverse' and `var' reference, while keeping the abstraction. thi