From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Tomas Hlavaty Newsgroups: gmane.emacs.help Subject: Re: Advantage using mapc over dolist Date: Tue, 03 Dec 2024 21:04:46 +0100 Message-ID: <87r06o4joh.fsf@neko.mail-host-address-is-not-set> References: <87zflevbwm.fsf@neko.mail-host-address-is-not-set> <87frn5lswe.fsf@neko.mail-host-address-is-not-set> <875xo1lr1q.fsf@neko.mail-host-address-is-not-set> <87mshdrze6.fsf@neko.mail-host-address-is-not-set> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="40731"; mail-complaints-to="usenet@ciao.gmane.io" Cc: help-gnu-emacs@gnu.org To: Jean Louis Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Tue Dec 03 21:05:26 2024 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 1tIZ9A-000AMO-Uf for geh-help-gnu-emacs@m.gmane-mx.org; Tue, 03 Dec 2024 21:05:24 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1tIZ8g-0004OQ-OF; Tue, 03 Dec 2024 15:04:54 -0500 Original-Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tIZ8e-0004O8-Lr for help-gnu-emacs@gnu.org; Tue, 03 Dec 2024 15:04:52 -0500 Original-Received: from logand.com ([37.48.87.44]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1tIZ8d-0002GY-5d for help-gnu-emacs@gnu.org; Tue, 03 Dec 2024 15:04:52 -0500 Original-Received: by logand.com (Postfix, from userid 1001) id AF79B1A0369; Tue, 3 Dec 2024 21:04:47 +0100 (CET) X-Mailer: emacs 29.4 (via feedmail 11-beta-1 I) In-Reply-To: Received-SPF: pass client-ip=37.48.87.44; envelope-from=tom@logand.com; helo=logand.com X-Spam_score_int: -18 X-Spam_score: -1.9 X-Spam_bar: - X-Spam_report: (-1.9 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.29 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-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.help:148561 Archived-At: On Tue 03 Dec 2024 at 22:24, Jean Louis wrote: >> > I am an Emacs Lisp programmer, and all Common Lisp functions >> > prefixed with `cl-` I find liberating in the sense that personally >> > within Emacs Lisp I do not like mixing it because it is not Common Lisp. Maybe the issue is that too many things were degraded into cl-*. And now very complex bad ideas are pushed as replacement fix. >> > But within Emacs, I like using Emacs Lisp pure Not sure what does "Emacs Lisp pure" mean. Does it mean "Whatever comes with Emacs except cl-* stuff."? "Emacs Lisp pure" had CASE and ECASE in 1993 (conversion to RCS according to git) until 2012 iirc. > But Tomas, I mentioned nothing about pcase. I said cl- namespace being > separate feels liberating to me as my personal choice. If you wish to > use those commands without cl-prefix, there is solution that Stefan > wrote in recent email. Bad workarounds do not fill me with joy. >> Anytime I process complex >> data recursively, I reach for labels. There does not seem to be an >> alternative, does it? > > I have no idea about it, let me see what AI says: That AI is not good enough. The examples are too trivial to justify labels. This function has a structure which does justify labels: (defun parse-rss (dom) (let (z) (cl-labels ((link (x) (when (consp x) (cl-case (car x) (link (push (caddr x) z)) (t (mapc #'link (cddr x)))))) (rec (x) (when (consp x) (cl-case (car x) (item (link x)) (t (mapc #'rec (cddr x))))))) (rec dom)) (nreverse z))) > So I would say, I would not get frustrated, rather just make an alias > for me and use `labels' wherever I wish and want. This does not address the problem. In my Elisp code, I simply require cl-lib, add those cl- prefixes where needed and live with the result. However, here simple and likely pre-CL functions and macros are degraded to cl-*, people are discouraged from using cl-* and encouraged to use something even more bonkers than cl-* ;-)