From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Tassilo Horn Newsgroups: gmane.emacs.help Subject: Re: elisp - anonymous function in an association list? Date: Thu, 29 Nov 2007 16:41:36 +0100 Message-ID: <87ir3lrrdb.fsf@member.fsf.org> References: <10f246a9-2a9b-477e-806d-7e3b38ce2607@i29g2000prf.googlegroups.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: ger.gmane.org 1196357440 20100 80.91.229.12 (29 Nov 2007 17:30:40 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 29 Nov 2007 17:30:40 +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 Nov 29 18:30:49 2007 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1IxnDl-00034w-2N for geh-help-gnu-emacs@m.gmane.org; Thu, 29 Nov 2007 18:30:41 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IxnDV-00029y-8M for geh-help-gnu-emacs@m.gmane.org; Thu, 29 Nov 2007 12:30:25 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1IxnDG-00029d-II for help-gnu-emacs@gnu.org; Thu, 29 Nov 2007 12:30:10 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1IxnDB-00028x-S4 for help-gnu-emacs@gnu.org; Thu, 29 Nov 2007 12:30:10 -0500 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1IxnDB-00028u-NX for help-gnu-emacs@gnu.org; Thu, 29 Nov 2007 12:30:05 -0500 Original-Received: from main.gmane.org ([80.91.229.2] 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 1IxnDB-0000z7-5y for help-gnu-emacs@gnu.org; Thu, 29 Nov 2007 12:30:05 -0500 Original-Received: from root by ciao.gmane.org with local (Exim 4.43) id 1IxnD8-00070z-EG for help-gnu-emacs@gnu.org; Thu, 29 Nov 2007 17:30:02 +0000 Original-Received: from dslb-084-063-053-069.pools.arcor-ip.net ([84.63.53.69]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 29 Nov 2007 17:30:02 +0000 Original-Received: from tassilo by dslb-084-063-053-069.pools.arcor-ip.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Thu, 29 Nov 2007 17:30:02 +0000 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 33 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: dslb-084-063-053-069.pools.arcor-ip.net User-Agent: Gnus/5.110007 (No Gnus v0.7) Emacs/23.0.50 (gnu/linux) Cancel-Lock: sha1:bqgDmKTDbtaK6vvKcLCrYjw6d1E= X-detected-kernel: by monty-python.gnu.org: Linux 2.6, seldom 2.4 (older, 4) X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:49693 Archived-At: apatheticagnostic writes: Hi, > Both calls fail, with an error message like so: > > for "b": Debugger entered--Lisp error: (invalid-function ((function > (lambda nil (message "B worked too!"))))) > > for "a": Debugger entered--Lisp error: (invalid-function ((quote > (lambda nil (message "We worked!"))))) This works: --8<---------------cut here---------------start------------->8--- (defvar sample-alist '(("a" (lambda () (message "We worked!"))) ("b" (lambda () (message "B worked too!"))))) (defun test-call (x) (funcall (cadr (assoc x sample-alist)))) (test-call "a") (test-call "b") --8<---------------cut here---------------end--------------->8--- First, you don't need to quote the lambdas inside the list, which is already quoted. Second in `test-call' you don't want the cdr but the car of the cdr (= cadr) from the assoc. Bye, Tassilo