From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: return first element in list with certain property Date: Tue, 21 Nov 2017 21:14:12 +0100 Message-ID: <867eujwfsb.fsf@zoho.com> References: <8660a60zjn.fsf@zoho.com> <87mv3gzndx.fsf@ericabrahamsen.net> <86ine4y7jy.fsf@zoho.com> <874lpozk0y.fsf@ericabrahamsen.net> <8660a4xuou.fsf@zoho.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1511295351 30912 195.159.176.226 (21 Nov 2017 20:15:51 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 21 Nov 2017 20:15:51 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Tue Nov 21 21:15:45 2017 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1eHExL-0007Wz-H7 for geh-help-gnu-emacs@m.gmane.org; Tue, 21 Nov 2017 21:15:44 +0100 Original-Received: from localhost ([::1]:36352 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eHExS-0000Wp-Ro for geh-help-gnu-emacs@m.gmane.org; Tue, 21 Nov 2017 15:15:50 -0500 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:59654) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1eHEwz-0000Wf-JN for help-gnu-emacs@gnu.org; Tue, 21 Nov 2017 15:15:22 -0500 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1eHEww-0008NJ-8U for help-gnu-emacs@gnu.org; Tue, 21 Nov 2017 15:15:21 -0500 Original-Received: from [195.159.176.226] (port=44294 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1eHEwv-0008Mk-Tv for help-gnu-emacs@gnu.org; Tue, 21 Nov 2017 15:15:18 -0500 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1eHEwh-0005Cz-Is for help-gnu-emacs@gnu.org; Tue, 21 Nov 2017 21:15:03 +0100 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Original-Lines: 24 Original-X-Complaints-To: usenet@blaine.gmane.org Mail-Copies-To: never Cancel-Lock: sha1:5omPxdubAnLB3xxm4jzEaz1eL8I= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.21 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.org@gnu.org Original-Sender: "help-gnu-emacs" Xref: news.gmane.org gmane.emacs.help:115038 Archived-At: Philipp Stephani wrote: > Please consider Knuth's statement about > premature optimization. Until your users have > actually complained about the speed of your > product and you have benchmarked it and > isolated cl-find-if as the culprit, there's > no need to micro-optimize. > Presumably cl-find-if has performed two > iterations for years or decades without > anybody being bothered enough to improve it. This is not an optimization issue in my eyes. It is just bizarre to have low-level operators on low-level data structures operate like this when there is no reason to, as the `cl-loop', `cl-dolist' and `seq-find' examples all show. It is like the basic building blocks of the universe. Better get them right. I'm a bottom-up guy. -- underground experts united http://user.it.uu.se/~embe8573