From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: weber Newsgroups: gmane.emacs.help Subject: Re: Scheme to elisp Date: 16 May 2007 10:18:15 -0700 Organization: http://groups.google.com Message-ID: <1179335895.203447.242300@y80g2000hsf.googlegroups.com> References: <1179320194.826658.32840@p77g2000hsh.googlegroups.com> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" X-Trace: sea.gmane.org 1179336819 8220 80.91.229.12 (16 May 2007 17:33:39 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Wed, 16 May 2007 17:33:39 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed May 16 19:33:38 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 1HoNNY-0005Sg-2v for geh-help-gnu-emacs@m.gmane.org; Wed, 16 May 2007 19:33:36 +0200 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HoNVY-0007yg-4g for geh-help-gnu-emacs@m.gmane.org; Wed, 16 May 2007 13:41:52 -0400 Original-Path: shelby.stanford.edu!newshub.stanford.edu!postnews.google.com!y80g2000hsf.googlegroups.com!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 51 Original-NNTP-Posting-Host: 200.182.179.170 Original-X-Trace: posting.google.com 1179335895 15560 127.0.0.1 (16 May 2007 17:18:15 GMT) Original-X-Complaints-To: groups-abuse@google.com Original-NNTP-Posting-Date: Wed, 16 May 2007 17:18:15 +0000 (UTC) In-Reply-To: User-Agent: G2/1.0 X-HTTP-UserAgent: Mozilla/5.0 (Windows; U; Windows NT 5.1; pt-BR; rv:1.8.1.3) Gecko/20070309 Firefox/2.0.0.3,gzip(gfe),gzip(gfe) X-HTTP-Via: 1.1 fw.datacom-telematica.com.br:3128 (squid/2.5.STABLE6) Complaints-To: groups-abuse@google.com Injection-Info: y80g2000hsf.googlegroups.com; posting-host=200.182.179.170; posting-account=pG57fA0AAADtQ-4h1MyvjXjZpSNZC0zj Original-Xref: shelby.stanford.edu gnu.emacs.help:148453 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:44033 Archived-At: On 16 maio, 12:58, Joost Kremers wrote: > weber wrote: > > Or in a simplified form, my problem is : why the snippet below does > > not work? > > [note: the original indentation was confusing:] > > > (defun f (n) > > (let ((g (lambda (x) (+ 5 x)))) > > (g (+ n 1)))) > > > (f 1) -> void-function g > > well, elisp is a lisp2, rather than a lisp1 (as scheme is), so a symbol can > have both a value as a variable *and* a function definition. with let, you > assign g a value *as a variable*, it does not affect the *function* > definition of the symbol g. > > it is possible to assign an anonymous function as the variable value of a > symbol. if you do this, you can use either funcall or apply (they have > different uses) to call the (anonymous) function stored in the variable, > like this: > > (defun f (n) > (let ((g (lambda (x) (+ 5 x)))) > (funcall g (+ n 1)))) > > alternatively, if you use the common-lisp compatibility package, you can > use either flet or labels to create function bindings: > > (defun f (n) > (flet ((g (x) (+ 5 x))) > (g (+ n 1)))) > > note that with flet, you don't use anonymous functions. the syntax is: > > (flet (( . )) > () > ...) > > HTH > > -- > Joost Kremers joostkrem...@yahoo.com > Selbst in die Unterwelt dringt durch Spalten Licht > EN:SiS(9) Thank you very much for the explanation... It did helped! -weber