From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: Is there equivalent internal function for this list-has-elements? Date: Sun, 18 Oct 2020 16:43:11 -0400 Message-ID: References: Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="25935"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/28.0.50 (gnu/linux) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:ILro5JyH3mC7yzC+zTU6iA4jXqE= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Sun Oct 18 22:47:04 2020 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 1kUFa3-0006de-RT for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 18 Oct 2020 22:47:03 +0200 Original-Received: from localhost ([::1]:49114 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1kUFa2-00006f-SH for geh-help-gnu-emacs@m.gmane-mx.org; Sun, 18 Oct 2020 16:47:02 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:39046) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kUFWT-00061t-C8 for help-gnu-emacs@gnu.org; Sun, 18 Oct 2020 16:43:21 -0400 Original-Received: from static.214.254.202.116.clients.your-server.de ([116.202.254.214]:34522 helo=ciao.gmane.io) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1kUFWR-0002Ev-Vf for help-gnu-emacs@gnu.org; Sun, 18 Oct 2020 16:43:21 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1kUFWO-0002Jc-Qk for help-gnu-emacs@gnu.org; Sun, 18 Oct 2020 22:43:16 +0200 X-Injected-Via-Gmane: http://gmane.org/ Received-SPF: pass client-ip=116.202.254.214; envelope-from=geh-help-gnu-emacs@m.gmane-mx.org; helo=ciao.gmane.io X-detected-operating-system: by eggs.gnu.org: First seen = 2020/10/18 16:43:16 X-ACL-Warn: Detected OS = Linux 2.2.x-3.x [generic] [fuzzy] X-Spam_score_int: -15 X-Spam_score: -1.6 X-Spam_bar: - X-Spam_report: (-1.6 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no autolearn_force=no X-Spam_action: no action 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:124558 Archived-At: > Other question is, if there is any function other than pushnew, if I > do not wish to use the pushnew? Of course there is. And if you don't like the name `pushnew`, for example because it starts with the distateful "p", you can use `cl-pushnew`, which also has the advantage of not being deprecated. > I can maybe just make a check if element is in the list and then > simply push? You mean, do the same as `pushnew`? Yes, of course. You could also define a function or even a macro that does that for you. A good name for it could `my-pushnew` ;-) Stefan