From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mp0 ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by ms11 with LMTPS id UNQnO9lT118ybQAA0tVLHw (envelope-from ) for ; Mon, 14 Dec 2020 12:00:25 +0000 Received: from aspmx1.migadu.com ([2001:41d0:2:4a6f::]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)) by mp0 with LMTPS id iA8EN9lT119YOQAA1q6Kng (envelope-from ) for ; Mon, 14 Dec 2020 12:00:25 +0000 Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by aspmx1.migadu.com (Postfix) with ESMTPS id B795C9402D6 for ; Mon, 14 Dec 2020 12:00:25 +0000 (UTC) Received: from localhost ([::1]:35574 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kokyA-0004Fn-2m for larch@yhetil.org; Mon, 14 Dec 2020 05:20:42 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:41026) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kokxy-0004EB-HM for guix-devel@gnu.org; Mon, 14 Dec 2020 05:20:30 -0500 Received: from fencepost.gnu.org ([2001:470:142:3::e]:49702) by eggs.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kokxy-0000h5-94; Mon, 14 Dec 2020 05:20:30 -0500 Received: from [2a01:e0a:1d:7270:af76:b9b:ca24:c465] (port=39938 helo=ribbon) by fencepost.gnu.org with esmtpsa (TLS1.2:RSA_AES_256_CBC_SHA1:256) (Exim 4.82) (envelope-from ) id 1kokxx-0000Gm-AT; Mon, 14 Dec 2020 05:20:29 -0500 From: =?utf-8?Q?Ludovic_Court=C3=A8s?= To: zimoun Subject: Re: [outreachy] Walk through the Git history References: <86r1nwfdeu.fsf@gmail.com> <86lfe3fc0t.fsf@gmail.com> <868sa2gbjg.fsf@gmail.com> X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 24 Frimaire an 229 de la =?utf-8?Q?R=C3=A9volution?= X-PGP-Key-ID: 0x090B11993D9AEBB5 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 3CE4 6455 8A84 FDC6 9DB4 0CFB 090B 1199 3D9A EBB5 X-OS: x86_64-pc-linux-gnu Date: Mon, 14 Dec 2020 11:20:27 +0100 In-Reply-To: <868sa2gbjg.fsf@gmail.com> (zimoun's message of "Sat, 12 Dec 2020 18:49:07 +0100") Message-ID: <878sa0vgd0.fsf@gnu.org> User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/27.1 (gnu/linux) MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable X-BeenThere: guix-devel@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: "Development of GNU Guix and the GNU System distribution." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Guix Devel , Mathieu Othacehe Errors-To: guix-devel-bounces+larch=yhetil.org@gnu.org Sender: "Guix-devel" X-Migadu-Flow: FLOW_IN X-Migadu-Spam-Score: -2.81 Authentication-Results: aspmx1.migadu.com; dkim=none; dmarc=pass (policy=none) header.from=gnu.org; spf=pass (aspmx1.migadu.com: domain of guix-devel-bounces@gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=guix-devel-bounces@gnu.org X-Migadu-Queue-Id: B795C9402D6 X-Spam-Score: -2.81 X-Migadu-Scanner: scn0.migadu.com X-TUID: rkz4Kp34DJyN Hi, zimoun skribis: > On Sat, 12 Dec 2020 at 14:24, Magali wrote: > >>> Awaiting how to walk the history tree, I am proposing to use the loop as >>> Mathieu said. However, =E2=80=99match=E2=80=99 is preferred over =E2= =80=99car=E2=80=99. >> >> I got curious as to why it is preferred, hehe. Is there a special >> reason? > > I do not really know. I am just taking in count previous Ludo=E2=80=99s > comments, for example [1]. From my understanding, it seems more > aesthetic. Maybe Ludo or someone else would comment more. :-) =E2=80=98match=E2=80=99 is usually clearer and less error-prone: it checks = that the list actually has the right shape. https://guix.gnu.org/manual/en/html_node/Data-Types-and-Pattern-Matching.= html https://www.gnu.org/software/guile/manual/html_node/Pattern-Matching.html I hope this sheds some light on this! Ludo=E2=80=99.