From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Jean Louis Newsgroups: gmane.emacs.help Subject: Re: [External] : Re: Emacs 30.0 warning from `cl-pushnew' and `memql' Date: Thu, 29 Dec 2022 01:47:57 +0300 Message-ID: References: <878ritgaty.fsf@dataswamp.org> <87o7rprvia.fsf@web.de> <87zgb913fg.fsf@dataswamp.org> <87ilhveo2s.fsf@web.de> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 7bit Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="37587"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Mutt/2.2.9+54 (af2080d) (2022-11-21) Cc: Michael Heerdegen , "help-gnu-emacs@gnu.org" To: Drew Adams Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Thu Dec 29 00:36:49 2022 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 1pAfyb-0009a8-6g for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 29 Dec 2022 00:36:49 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pAfy5-0008Fq-2Q; Wed, 28 Dec 2022 18:36:17 -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 1pAfy1-0008Eu-6p for help-gnu-emacs@gnu.org; Wed, 28 Dec 2022 18:36:13 -0500 Original-Received: from stw1.rcdrun.com ([217.170.207.13]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pAfxz-0004uZ-26 for help-gnu-emacs@gnu.org; Wed, 28 Dec 2022 18:36:12 -0500 Original-Received: from localhost ([::ffff:102.85.220.49]) (AUTH: PLAIN admin, TLS: TLS1.3,256bits,ECDHE_RSA_AES_256_GCM_SHA384) by stw1.rcdrun.com with ESMTPSA id 0000000000103842.0000000063ACD2EA.00007374; Wed, 28 Dec 2022 16:36:09 -0700 Mail-Followup-To: Drew Adams , Michael Heerdegen , "help-gnu-emacs@gnu.org" Content-Disposition: inline In-Reply-To: Received-SPF: pass client-ip=217.170.207.13; envelope-from=bugs@gnu.support; helo=stw1.rcdrun.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, 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:142011 Archived-At: * Drew Adams [2022-12-29 00:24]: > > Michael, what is the fastest way to add element on stack of the list > > elements? > > > > Let us say I am adding only strings, would this be faster than `push': > > > > (setq my-list '()) > > (setq my-list (cons (quote "Word") my-list)) > > > I'm not Michael, but (push "Word" my-list) expands > to just that code. So no, neither is faster. > > (macroexpand-1 '(push "Word" mylist)) > > ;; ==> (setq mylist (cons "Word" mylist)) Thanks. > (And no reason to quote either () or a literal string.) There was reason. See here: (setq my-list '()) (benchmark 1000 (setq my-list (cons "Word" my-list))) Debugger entered--Lisp error: (invalid-function "Word") ("Word") (closure (t) nil ("Word"))() benchmark-call((closure (t) nil ("Word")) 1000) benchmark(1000 ("Word")) eval((benchmark 1000 (setq my-list (cons "Word" my-list))) nil) elisp--eval-last-sexp(nil) eval-last-sexp(nil) funcall-interactively(eval-last-sexp nil) call-interactively(eval-last-sexp nil nil) command-execute(eval-last-sexp) but then `benchmark` worked only first time, second time it gave error. -- Jean Take action in Free Software Foundation campaigns: https://www.fsf.org/campaigns In support of Richard M. Stallman https://stallmansupport.org/