From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: henri-biard@francemel.fr Newsgroups: gmane.emacs.help Subject: Appending lists Date: Tue, 15 Jun 2021 03:47:57 +0200 (CEST) Message-ID: References: <87v96g2bf3.fsf@zoho.eu> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: quoted-printable Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="22141"; mail-complaints-to="usenet@ciao.gmane.io" To: moasenwood@zoho.eu, help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Jun 15 07:54:15 2021 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane-mx.org Original-Received: from lists.gnu.org ([209.51.188.17]) by ciao.gmane.io with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.92) (envelope-from ) id 1lt21f-0005al-1Y for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 15 Jun 2021 07:54:15 +0200 Original-Received: from localhost ([::1]:52254 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1lt21e-0000zC-2k for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 15 Jun 2021 01:54:14 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:42858) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lt20n-000857-V1 for help-gnu-emacs@gnu.org; Tue, 15 Jun 2021 01:53:21 -0400 Original-Received: from msg-2.mailo.com ([213.182.54.12]:56764) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1lt20m-0007vE-BW for help-gnu-emacs@gnu.org; Tue, 15 Jun 2021 01:53:21 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=francemel.fr; s=mailo; t=1623721681; bh=0b+iZAb93uV5hUak3J5PFOikDmWI9VSX5Jtg9Y60Uok=; h=X-EA-Auth:From:To:Date:Subject:MIME-Version:X-Mailer:Message-ID: In-Reply-To:Content-Type; b=WjQEu2pnfXCtRNalb8YNP+SScnTMIfb6sBPOn8XTyqQCla6FX9K1BMdDwxqJc26mG 2LNVM0iUSgGxpumD7THUuNuS6i215iVrGu55O2fxp/m0lSm1LZwmrl8Jz8Ceixu1px CQv96EvKdGwwQWl+3JVE8v5mT8/bMiTzWd6/+IKc= Original-Received: by www-7.mailo.com with http webmail; Tue, 15 Jun 2021 03:47:57 +0200 (CEST) X-EA-Auth: QUU13gvLRsyZPan8SHSlZSg6QYBeEmFLAjGyr+rkth7i+vYlYY6NMF6bobuER4YlPKFcfMndfaH/jk7ByBddO7dvelPujg8a X-Priority: 3 X-Mailer: COMS/EA21.01/r20210601 In-Reply-To: <87v96g2bf3.fsf@zoho.eu> Received-SPF: pass client-ip=213.182.54.12; envelope-from=henri-biard@francemel.fr; helo=msg-2.mailo.com X-Spam_score_int: -4 X-Spam_score: -0.5 X-Spam_bar: / X-Spam_report: (-0.5 / 5.0 requ) BAYES_00=-1.9, DATE_IN_PAST_03_06=1.592, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, HTML_MESSAGE=0.001, RCVD_IN_MSPIKE_H4=0.001, RCVD_IN_MSPIKE_WL=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action X-Content-Filtered-By: Mailman/MimeDel 2.1.23 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.io gmane.emacs.help:130858 Archived-At: >> Pierpaolo Bernardi wrote: >> (defvar newlist=20 >> (append city district)) >> Emanuel Berg > Looks - bad. Now I am really getting wound up ! Should I use (append city district) or (list city district) ? Using defvar seemed good enough for me.=20 Anyway, concatenating all the arguments in "append" make the result a list= . From: Emanuel Berg via Users list for the GNU Emacs text editor To: help-gnu-emacs@gnu.org Subject: Re: Appending lists Date: 15/06/2021 02:56:16 Europe/Paris Pierpaolo Bernardi wrote: > (defvar newlist=20 > (append city district)) Looks - bad. Forget about the initvalue, here people will have to agree to disagree tho. It makes development less "athletic" and fun, and more confusing when debugging/optimization and so re-eval start. Instead, use `defvar' to mute the byte-compiler then on the next line use `setq'. IOM! newlist - bad name > Il giorno 14 giugno 2021, alle ore 18:40, > henri-biard@francemel.fr ha scritto: > > I want to make a new list named newlist to be > > (append city district) > > and put the new list into a new list. There are many ways to do that. For example (setq list-one '(1 2)) ; (1 2) (setq list-one-two-times (list list-one list-one)) ; ((1 2) (1 2)) (setq list-one '(1 2 3)) ; (1 2 3) list-one-two-times ; ((1 2) (1 2)) <-- still --=20 underground experts united https://dataswamp.org/~incal