From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: No Wayman Newsgroups: gmane.emacs.bugs Subject: bug#70686: 30.0.50; cl--position is slow Date: Wed, 01 May 2024 08:20:56 -0400 Message-ID: <87ttjhwwnr.fsf@gmail.com> References: <87y18uwgsk.fsf@gmail.com> <86bk5ppwss.fsf@gnu.org> Mime-Version: 1.0 Content-Type: text/plain; format=flowed Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="33427"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: mu4e 1.12.4; emacs 30.0.50 Cc: 70686@debbugs.gnu.org To: Eli Zaretskii Original-X-From: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Wed May 01 14:22:07 2024 Return-path: Envelope-to: geb-bug-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 1s28yL-0008Nq-2s for geb-bug-gnu-emacs@m.gmane-mx.org; Wed, 01 May 2024 14:22:05 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1s28xy-0004EC-Lg; 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Wed, 01 May 2024 05:20:54 -0700 (PDT) Original-Received: from laptop ([2601:84:847f:c697:e217:2894:4724:14f4]) by smtp.gmail.com with ESMTPSA id et25-20020a05622a4b1900b0043abd262cc9sm3614353qtb.83.2024.05.01.05.20.54 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 01 May 2024 05:20:54 -0700 (PDT) In-Reply-To: <86bk5ppwss.fsf@gnu.org> (Eli Zaretskii's message of "Wed, 01 May 2024 14:59:47 +0300") X-BeenThere: debbugs-submit@debbugs.gnu.org X-Mailman-Version: 2.1.18 Precedence: list X-BeenThere: bug-gnu-emacs@gnu.org List-Id: "Bug reports for GNU Emacs, the Swiss army knife of text editors" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Original-Sender: bug-gnu-emacs-bounces+geb-bug-gnu-emacs=m.gmane-mx.org@gnu.org Xref: news.gmane.io gmane.emacs.bugs:284251 Archived-At: Eli Zaretskii writes: > Not sure why is this a bug report. Slow performance, especially in a widely used library like cl-lib, is a bug. Where would you prefer such observations be reported? > If cl-position is too slow for your application, you can always > use > something else, something that is less generic and more tailored > to your specific sequence type(s), no? As stated, I've done that and am aware of the general performance/flexibility trade-offs. It would be preferable to improve the performance of that function, as it would benefit anyone using it. Are you confident the performance trade-off is due to dispatching on sequence types in this case? Do you think the performance could be improved without sacrificing that flexibility? I'll dig into it more when I have time, but I'm starting a discussion here in case someone has already made an attempt or knows the answers to those questions.