From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@gnu.org (Ludovic =?iso-8859-1?Q?Court=E8s?=) Newsgroups: gmane.lisp.guile.user Subject: Re: Dynamic variable binding Date: Wed, 12 Nov 2008 23:05:34 +0100 Message-ID: <87bpwkd2hd.fsf@gnu.org> References: <8wro202o.fsf@vps203.linuxvps.org> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1226527737 6548 80.91.229.12 (12 Nov 2008 22:08:57 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 12 Nov 2008 22:08:57 +0000 (UTC) To: guile-user@gnu.org Original-X-From: guile-user-bounces+guile-user=m.gmane.org@gnu.org Wed Nov 12 23:09:59 2008 Return-path: Envelope-to: guile-user@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1L0NuP-0004Vm-3w for guile-user@m.gmane.org; Wed, 12 Nov 2008 23:09:58 +0100 Original-Received: from localhost ([127.0.0.1]:53231 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1L0NtG-0001LY-LO for guile-user@m.gmane.org; Wed, 12 Nov 2008 17:08:46 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1L0NqO-00005w-DO for guile-user@gnu.org; Wed, 12 Nov 2008 17:05:48 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1L0NqM-00004s-El for guile-user@gnu.org; Wed, 12 Nov 2008 17:05:47 -0500 Original-Received: from [199.232.76.173] (port=40059 helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1L0NqL-0008WK-M7 for guile-user@gnu.org; Wed, 12 Nov 2008 17:05:45 -0500 Original-Received: from main.gmane.org ([80.91.229.2]:53292 helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.60) (envelope-from ) id 1L0NqL-00069v-0M for guile-user@gnu.org; Wed, 12 Nov 2008 17:05:45 -0500 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1L0NqI-0000P7-5b for guile-user@gnu.org; Wed, 12 Nov 2008 22:05:42 +0000 Original-Received: from reverse-83.fdn.fr ([80.67.176.83]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 12 Nov 2008 22:05:42 +0000 Original-Received: from ludo by reverse-83.fdn.fr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Wed, 12 Nov 2008 22:05:42 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 20 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: reverse-83.fdn.fr X-URL: http://www.fdn.fr/~lcourtes/ X-Revolutionary-Date: 22 Brumaire an 217 de la =?iso-8859-1?Q?R=E9volution?= X-PGP-Key-ID: 0xEA52ECF4 X-PGP-Key: http://www.fdn.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 821D 815D 902A 7EAB 5CEE D120 7FBA 3D4F EB1F 5364 X-OS: i686-pc-linux-gnu User-Agent: Gnus/5.11 (Gnus v5.11) Emacs/22.3 (gnu/linux) Cancel-Lock: sha1:mfuVM301MnT7JSNUJXWVyGoBvWg= X-detected-operating-system: by monty-python.gnu.org: GNU/Linux 2.6, seldom 2.4 (older, 4) X-BeenThere: guile-user@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: General Guile related discussions List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: guile-user-bounces+guile-user=m.gmane.org@gnu.org Errors-To: guile-user-bounces+guile-user=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.user:6891 Archived-At: Hello! Sebastian Tennant writes: > What exactly happens when you 'define' a symbol? In Guile (non-portable) terms, "(define foo 'bar)" is equivalent to: (module-define! (current-module) 'foo 'bar) or, at a lower-level: (module-add! (current-module) 'foo (make-variable 'bar)) But, just like "`eval' is evil", run-time symbol definition doesn't sound right. Surely, there are other ways that you could use to solve your problem more elegantly. Thanks, Ludo'.