From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: "Pascal J. Bourguignon" Newsgroups: gmane.emacs.help Subject: Re: Always using let* Date: Mon, 15 Sep 2014 04:12:56 +0200 Organization: Informatimago Message-ID: <87sijtljh3.fsf@kuiper.lan.informatimago.com> References: <87fvfukmso.fsf@Equus.decebal.nl> <87ppexemlc.fsf@debian.uxu> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1410747629 5152 80.91.229.3 (15 Sep 2014 02:20:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Mon, 15 Sep 2014 02:20:29 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Mon Sep 15 04:20:24 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 1XTLtv-0001Lu-K0 for geh-help-gnu-emacs@m.gmane.org; Mon, 15 Sep 2014 04:20:23 +0200 Original-Received: from localhost ([::1]:56875 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1XTLtu-0001Ml-Vz for geh-help-gnu-emacs@m.gmane.org; Sun, 14 Sep 2014 22:20:22 -0400 Original-Path: usenet.stanford.edu!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 41 Original-X-Trace: individual.net 9yT9a4BuTlYUNP11oNr1ownFQcbodL+zJ5Abtch5S+hZblgvlQ Cancel-Lock: sha1:OWYxYzU0MzRlM2YxZWZiODY3MzZkZjhjMmUyZmZjNzUzMTg3MjM2Mg== sha1:c9AVm6C0JEtz2pzieDxuERbugUg= Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA oElEQVR4nK3OsRHCMAwF0O8YQufUNIQRGIAja9CxSA55AxZgFO4coMgYrEDDQZWPIlNAjwq9 033pbOBPtbXuB6PKNBn5gZkhGa86Z4x2wE67O+06WxGD/HCOGR0deY3f9Ijwwt7rNGNf6Oac l/GuZTF1wFGKiYYHKSFAkjIo1b6sCYS1sVmFhhhahKQssRjRT90ITWUk6vvK3RsPGs+M1RuR mV+hO/VvFAAAAABJRU5ErkJggg== X-Accept-Language: fr, es, en User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.3 (gnu/linux) Original-Xref: usenet.stanford.edu gnu.emacs.help:207620 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:99894 Archived-At: Emanuel Berg writes: > Drew Adams writes: > >> Lisps such as Common Lisp were specifically designed >> with this parallel evaluation in mind. The spec (and >> CLTL(2)) > > CLTL(2) = "Common Lisp The Language", 2nd edition, by > Guy Steele. > > Here it is, as a PDF - 1097 pages, according to > 'exiftool': > > http://www.lispmachine.net/books/common_lisp_the_language.pdf > >> Whether a given Common Lisp implementation takes >> advantage of this inherent parallelism is optional. >> Likewise for the other explicitly parallel constructs >> in CL. >> >> For `psetf', for example, CLTL says that "the >> assignments of new values are done in parallel. ..." > > Again, what do you mean by "parallel"? Is it parallel > (i.e., truly concurrent) computation on different CPUs > (cores), or is it some other kind of parallelism or > pipelining? It means that: (psetf a b b a) exchanges the values of b and a. -- __Pascal Bourguignon__ http://www.informatimago.com/ “The factory of the future will have only two employees, a man and a dog. The man will be there to feed the dog. The dog will be there to keep the man from touching the equipment.” -- Carl Bass CEO Autodesk