From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Michael Heerdegen Newsgroups: gmane.emacs.help Subject: Re: alist-get in Emacs 24? Date: Thu, 08 Oct 2015 18:14:17 +0200 Message-ID: <87vbahjq1y.fsf@web.de> References: <871tddvl08.fsf@mbork.pl> <877fn5hgg8.fsf@web.de> <87k2qyij75.fsf@mbork.pl> <87egh5g48f.fsf@web.de> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1444321030 10293 80.91.229.3 (8 Oct 2015 16:17:10 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 8 Oct 2015 16:17:10 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Thu Oct 08 18:17:04 2015 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from eggs.gnu.org ([208.118.235.92]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZkDsN-0005rE-84 for geh-help-gnu-emacs@m.gmane.org; Thu, 08 Oct 2015 18:17:03 +0200 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZkDrI-0007mi-ON for geh-help-gnu-emacs@m.gmane.org; Thu, 08 Oct 2015 12:17:02 -0400 Original-Received: from lists.gnu.org ([2001:4830:134:3::11]:54813) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZkDrI-0007jv-88 for geh-help-gnu-emacs@m.gmane.org; Thu, 08 Oct 2015 12:15:56 -0400 Original-Received: from localhost ([::1]:35848 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZkDrI-0008NW-2Q for geh-help-gnu-emacs@m.gmane.org; Thu, 08 Oct 2015 12:15:56 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:33544) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZkDqZ-00087u-8c for help-gnu-emacs@gnu.org; Thu, 08 Oct 2015 12:15:33 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZkDps-0005SU-QY for help-gnu-emacs@gnu.org; Thu, 08 Oct 2015 12:15:11 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:58238) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZkDps-0005S2-IJ for help-gnu-emacs@gnu.org; Thu, 08 Oct 2015 12:14:28 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1ZkDpp-0003c3-L9 for help-gnu-emacs@gnu.org; Thu, 08 Oct 2015 18:14:25 +0200 Original-Received: from ip-90-186-0-85.web.vodafone.de ([90.186.0.85]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 08 Oct 2015 18:14:25 +0200 Original-Received: from michael_heerdegen by ip-90-186-0-85.web.vodafone.de with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 08 Oct 2015 18:14:25 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 17 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: ip-90-186-0-85.web.vodafone.de User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/25.0.50 (gnu/linux) Cancel-Lock: sha1:BTUIkRB27hlpcT+o+GEjeXS4tVo= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 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-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org X-detected-operating-system: by eggs.gnu.org: Error: Malformed IPv6 address (bad octet value). X-Received-From: 2001:4830:134:3::11 Xref: news.gmane.org gmane.emacs.help:107556 Archived-At: Drew Adams writes: > Yes, with such (destructive) functions, if you have a variable > pointing to the list (empty or not), you do need to re-set it > to the result returned by the function. But that's all, AFAIK. Our views just differ in whether you think of a `setter' as already including the above (undoubtedly necessary) "res-set" operation or not. I understood "setter" as the term is used for (generalized) variables like in gv.el. What I meant is that just passing by value is not sufficient, you have to set a symbol's value somewhere. With regard to that, no, this is not different from `delete'. Michael.