From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.io!.POSTED.blaine.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.help Subject: Re: Passing buffers to function in elisp Date: Thu, 23 Feb 2023 10:34:32 +0100 Message-ID: <87k008lo7r.fsf@web.de> References: <87mt56hg4e.fsf@iki.fi> Mime-Version: 1.0 Content-Type: text/plain Injection-Info: ciao.gmane.io; posting-host="blaine.gmane.org:116.202.254.214"; logging-data="8051"; mail-complaints-to="usenet@ciao.gmane.io" User-Agent: Gnus/5.13 (Gnus v5.13) To: help-gnu-emacs@gnu.org Cancel-Lock: sha1:aeNKVYif/2PFEZ7uC36gxjAicso= Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane-mx.org@gnu.org Thu Feb 23 10:35:19 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 1pV80U-0001rC-Sb for geh-help-gnu-emacs@m.gmane-mx.org; Thu, 23 Feb 2023 10:35:18 +0100 Original-Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pV7zy-0006Y3-4j; Thu, 23 Feb 2023 04:34:46 -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 1pV7zw-0006Xu-NO for help-gnu-emacs@gnu.org; Thu, 23 Feb 2023 04:34:44 -0500 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 1pV7zu-0001Oh-3t for help-gnu-emacs@gnu.org; Thu, 23 Feb 2023 04:34:44 -0500 Original-Received: from list by ciao.gmane.io with local (Exim 4.92) (envelope-from ) id 1pV7zp-0000dl-G7 for help-gnu-emacs@gnu.org; Thu, 23 Feb 2023 10:34:37 +0100 X-Injected-Via-Gmane: http://gmane.org/ 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: -13 X-Spam_score: -1.4 X-Spam_bar: - X-Spam_report: (-1.4 / 5.0 requ) BAYES_00=-1.9, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.25, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=no 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:142815 Archived-At: writes: > > Is it better just to assume in functions that the current buffer is > > the data buffer and work on that, instead of passing data as > > function arguments? > > That depends on your style and on the "contracts" you make > with yourself (and ultimately, of course, on what you are > trying to do: for each different purpose, some style will > be clearer/more efficient -- ideally both, but life and > things). And there is not only garbage, there is also the aspect of speed: many operations can be performed in buffers and likewise for strings, but sometimes operations are a lot faster for strings (modifying a buffer is a more complicated operation). Michael.