From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: weber Newsgroups: gmane.emacs.help Subject: fif function from On Lisp Date: Tue, 4 Mar 2008 04:31:19 -0800 (PST) Organization: http://groups.google.com Message-ID: <5ac4de71-b4e5-4b3d-997c-e438b816740e@d4g2000prg.googlegroups.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=ISO-8859-1 Content-Transfer-Encoding: 7bit X-Trace: ger.gmane.org 1204640393 474 80.91.229.12 (4 Mar 2008 14:19:53 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 4 Mar 2008 14:19:53 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Tue Mar 04 15:20:17 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 1JWY06-0007ak-8Z for geh-help-gnu-emacs@m.gmane.org; Tue, 04 Mar 2008 15:20:14 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1JWXzZ-0006uN-Br for geh-help-gnu-emacs@m.gmane.org; Tue, 04 Mar 2008 09:19:41 -0500 Original-Path: shelby.stanford.edu!newsfeed.stanford.edu!postnews.google.com!d4g2000prg.googlegroups.com!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 18 Original-NNTP-Posting-Host: 189.32.73.15 Original-X-Trace: posting.google.com 1204633879 26019 127.0.0.1 (4 Mar 2008 12:31:19 GMT) Original-X-Complaints-To: groups-abuse@google.com Original-NNTP-Posting-Date: Tue, 4 Mar 2008 12:31:19 +0000 (UTC) Complaints-To: groups-abuse@google.com Injection-Info: d4g2000prg.googlegroups.com; posting-host=189.32.73.15; posting-account=7GrjgQoAAAD6slWURausdJnhFDkmQYC8 User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; en-US; rv:1.8.1.12) Gecko/20080201 Firefox/2.0.0.12,gzip(gfe),gzip(gfe) X-HTTP-Via: 1.1 stargate.datacom:3128 (squid/2.6.STABLE5) Original-Xref: shelby.stanford.edu gnu.emacs.help:156671 X-Mailman-Approved-At: Tue, 04 Mar 2008 09:19:22 -0500 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:52043 Archived-At: Hi folks. For some reason this function from On Lisp doesn't work: (defun fif (a b &optional c) '(lambda (x) (if (funcall a x) (funcall b x) (unless (null c) (funcall c x))))) I should be able to call it like this: (mapcar (fif 'zerop '1+ 1-) '(0 1 2 3) => (1 0 1 2) but i'm probably missing something that is differs from Common Lisp to Elisp. Thanks in advance, weber