From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: Too many permutations computed Date: Thu, 03 Aug 2023 18:08:09 +0200 Message-ID: <873510kt1y.fsf@dataswamp.org> References: <87sf91eopn.fsf@dataswamp.org> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="32359"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:IhIHXmvPUc3QzQ8tfNY2oFfGR6g= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Fri Aug 04 20:27:43 2023 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 1qRzWZ-0008CS-KJ for geh-help-gnu-emacs@m.gmane-mx.org; Fri, 04 Aug 2023 20:27:43 +0200 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qRzWD-0005A1-Fo; Fri, 04 Aug 2023 14:27:21 -0400 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 1qRasJ-0003U0-BU for help-gnu-emacs@gnu.org; Thu, 03 Aug 2023 12:08:31 -0400 Original-Received: from ciao.gmane.io ([116.202.254.214]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qRasH-0003xV-MQ for help-gnu-emacs@gnu.org; Thu, 03 Aug 2023 12:08:31 -0400 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1qRasF-0005Eo-F1 for help-gnu-emacs@gnu.org; Thu, 03 Aug 2023 18:08:27 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Mail-Copies-To: never 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: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no autolearn_force=no X-Spam_action: no action X-Mailman-Approved-At: Fri, 04 Aug 2023 14:27:19 -0400 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:144594 Archived-At: uzibalqa wrote: >> (while (< j h) [...] >> (setq j (1+ j))) >> [...] >> for i := 0; i < k-1; i += 1 do [...] > > Do you understand what the i += 1 does ? It is the same as > i++, am I right ? The difference lies in the timing of when > the increment takes place (immediately in the case of i += > 1, and after the value is used in the case of i++). Do you > think the distinction mentioned makes a difference for the > algorithm ? It is up to the designer of the pseudo code to decide if it works like that, if it does then it would make a difference, yes. See if you can write the Elisp as close as possible to the pseudo code, including the variable names: (cl-loop for i from 0 to ... ) -- underground experts united https://dataswamp.org/~incal