From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?iso-8859-1?Q?Court=E8s?=) Newsgroups: gmane.lisp.guile.devel Subject: Re: sort needs a #:key argument Date: Tue, 20 Oct 2009 10:38:51 +0200 Message-ID: <87pr8impd0.fsf@gnu.org> References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1256027989 27708 80.91.229.12 (20 Oct 2009 08:39:49 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 20 Oct 2009 08:39:49 +0000 (UTC) To: guile-devel@gnu.org Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Tue Oct 20 10:39:38 2009 Return-path: Envelope-to: guile-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1N0AFl-0001Oc-W6 for guile-devel@m.gmane.org; Tue, 20 Oct 2009 10:39:38 +0200 Original-Received: from localhost ([127.0.0.1]:60304 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1N0AFl-0001QP-II for guile-devel@m.gmane.org; Tue, 20 Oct 2009 04:39:37 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1N0AFe-0001Jf-A8 for guile-devel@gnu.org; Tue, 20 Oct 2009 04:39:30 -0400 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1N0AFY-0001E1-5c for guile-devel@gnu.org; Tue, 20 Oct 2009 04:39:29 -0400 Original-Received: from [199.232.76.173] (port=54073 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1N0AFY-0001Dy-36 for guile-devel@gnu.org; Tue, 20 Oct 2009 04:39:24 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:56979) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1N0AFX-0008Nq-E8 for guile-devel@gnu.org; Tue, 20 Oct 2009 04:39:23 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.50) id 1N0AFT-0001Ij-Mc for guile-devel@gnu.org; Tue, 20 Oct 2009 10:39:19 +0200 Original-Received: from laptop-147-210-128-170.labri.fr ([147.210.128.170]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 20 Oct 2009 10:39:19 +0200 Original-Received: from ludo by laptop-147-210-128-170.labri.fr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Tue, 20 Oct 2009 10:39:19 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 17 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: laptop-147-210-128-170.labri.fr X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 29 =?iso-8859-1?Q?Vend=E9miaire?= an 218 de la =?iso-8859-1?Q?R=E9volution?= X-PGP-Key-ID: 0xEA52ECF4 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 821D 815D 902A 7EAB 5CEE D120 7FBA 3D4F EB1F 5364 X-OS: x86_64-unknown-linux-gnu User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1 (gnu/linux) Cancel-Lock: sha1:UUa/MUwaxFgkPsKd0zTmZYWNEWs= X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Errors-To: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.devel:9535 Archived-At: Hello, Andy Wingo writes: > (sort '((a . 1) (b . -2) (c . 3)) < cdr) > => ((b . -2) (a . 1) (c . 3)) FWIW I find: (sort '((a . 1) (b . -2) (c . 3)) (lambda (x y) (< (cdr x) (cdr y)))) more in the spirit of not “piling feature on top of feature”. Thanks, Ludo’.