From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: =?ISO-8859-1?Q?Nordl=F6w?= Newsgroups: gmane.emacs.help Subject: Re: Checking if all values of a list are true Date: Fri, 11 Jul 2008 04:37:20 -0700 (PDT) Organization: http://groups.google.com Message-ID: <2d973602-87f8-4d16-a031-a99bab267a36@y21g2000hsf.googlegroups.com> References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1215776533 5828 80.91.229.12 (11 Jul 2008 11:42:13 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 11 Jul 2008 11:42:13 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Jul 11 13:43:00 2008 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 1KHH1e-0003KT-2i for geh-help-gnu-emacs@m.gmane.org; Fri, 11 Jul 2008 13:42:58 +0200 Original-Received: from localhost ([127.0.0.1]:36076 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1KHH0l-0000CG-7M for geh-help-gnu-emacs@m.gmane.org; Fri, 11 Jul 2008 07:42:03 -0400 Original-Path: news.stanford.edu!headwall.stanford.edu!newsfeed.stanford.edu!postnews.google.com!y21g2000hsf.googlegroups.com!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 27 Original-NNTP-Posting-Host: 81.170.250.228 Original-X-Trace: posting.google.com 1215776240 4593 127.0.0.1 (11 Jul 2008 11:37:20 GMT) Original-X-Complaints-To: groups-abuse@google.com Original-NNTP-Posting-Date: Fri, 11 Jul 2008 11:37:20 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: y21g2000hsf.googlegroups.com; posting-host=81.170.250.228; posting-account=ytJKAgoAAAA1tg4ScoRszebXiIldA5vg User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (X11; U; Linux i686; sv-SE; rv:1.9) Gecko/2008061015 Firefox/3.0,gzip(gfe),gzip(gfe) Original-Xref: news.stanford.edu gnu.emacs.help:160083 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:55428 Archived-At: On 11 Juli, 13:33, Nordl=F6w wrote: > On 11 Juli, 13:23, Nordl=F6w wrote: > > > How do I check if all values of a list are true? > > > This is my attempt: > > (reduce 'and '(t t)) > > > but I get the error: and (invalid-function and) > > > (functionp 'and) > > > gives true so why on earth doesn't this work? > > > Thanks in advance, > > Nordl=F6w > > Is there an alternative pure emacs-lisp way (non common-lisp (cl)) of > doing this? > > /Nordl=F6w It would be even better if Emacs already had a function typically named any-p(arg-list) that returned t if all values in arg-list are non-nil. /Nordl=F6w