From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Stefan Monnier via Users list for the GNU Emacs text editor Newsgroups: gmane.emacs.help Subject: Re: Closures in Emacs and their usage scenarios. Date: Mon, 27 Sep 2021 22:55:51 -0400 Message-ID: References: Reply-To: Stefan Monnier Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="15640"; 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:fOhq8N0BUoCJiET+ifADZQTInZI= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Sep 28 04:56:21 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 1mV3I5-0003tf-38 for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 28 Sep 2021 04:56:21 +0200 Original-Received: from localhost ([::1]:57372 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1mV3I3-00038i-02 for geh-help-gnu-emacs@m.gmane-mx.org; Mon, 27 Sep 2021 22:56:19 -0400 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]:36712) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mV3Hj-00038Y-Ei for help-gnu-emacs@gnu.org; Mon, 27 Sep 2021 22:55:59 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]:50632) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1mV3Hi-0002Nl-0a for help-gnu-emacs@gnu.org; Mon, 27 Sep 2021 22:55:59 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1mV3Hg-0003U5-Cd for help-gnu-emacs@gnu.org; Tue, 28 Sep 2021 04:55:56 +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-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:133315 Archived-At: > I noticed the document on closure here [1] implemented in Emacs/Elisp currently. > But it's only a very concise and short introduction, and I want to > know more about the closures in Emacs and their usage scenarios. > Any helpful tips are welcome. Maybe a good starting point is https://en.wikipedia.org/wiki/Closure_(computer_programming) -- Stefan