From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Evans Winner Newsgroups: gmane.emacs.help Subject: Re: why not "stripes" in: (let ((zebra 'stripes) ... ; strings vs symbols? Date: Tue, 31 Dec 2013 19:00:51 -0700 Organization: Aioe.org NNTP Server Message-ID: References: <87iou4dgjf.fsf@nl106-137-194.student.uu.se> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1388541913 28446 80.91.229.3 (1 Jan 2014 02:05:13 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 1 Jan 2014 02:05:13 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Wed Jan 01 03:05:21 2014 Return-path: Envelope-to: geh-help-gnu-emacs@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1VyBBP-0003WM-N0 for geh-help-gnu-emacs@m.gmane.org; Wed, 01 Jan 2014 03:05:19 +0100 Original-Received: from localhost ([::1]:36152 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1VyBBO-0004Jk-Ut for geh-help-gnu-emacs@m.gmane.org; Tue, 31 Dec 2013 21:05:18 -0500 Original-Path: usenet.stanford.edu!goblin2!goblin.stu.neva.ru!aioe.org!.POSTED!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 20 Original-NNTP-Posting-Host: nO13baff6LXb4EdX6Oysjg.user.speranza.aioe.org Original-X-Complaints-To: abuse@aioe.org User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3.50 (gnu/linux) X-Notice: Filtered by postfilter v. 0.8.2 Cancel-Lock: sha1:nrmlS74UCkbj8P5Jpqy5ar81swc= Original-Xref: usenet.stanford.edu gnu.emacs.help:202950 X-BeenThere: help-gnu-emacs@gnu.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: Users list for the GNU Emacs text editor List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Original-Sender: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.help:95219 Archived-At: Emanuel Berg writes: The only thing I can think of that I saw in other languages and not in Lisp is *pattern matching*: branching straight off the functions' heads, like it is possible to do (and a very common practice) in languages like Erlang, SML, and Haskell. But I suppose it could be implemented as a Lisp macro if you really cared for it. For what it's worth, you might find Shen interesting -- shenlanguage.org >From the "Shen in 15 Minutes" page: (define factorial 0 -> 1 X -> (* X (factorial (- X 1))))