From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: pjb@informatimago.com (Pascal J. Bourguignon) Newsgroups: gmane.emacs.help Subject: Re: Perferr cond over case? Date: Sun, 11 Oct 2009 20:17:33 +0200 Organization: Informatimago Message-ID: <87fx9pre0y.fsf@galatea.local> References: NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: ger.gmane.org 1255286457 7891 80.91.229.12 (11 Oct 2009 18:40:57 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 11 Oct 2009 18:40:57 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sun Oct 11 20:40:48 2009 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 1Mx3Lc-0004Dr-9d for geh-help-gnu-emacs@m.gmane.org; Sun, 11 Oct 2009 20:40:48 +0200 Original-Received: from localhost ([127.0.0.1]:45917 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1Mx3Lb-0004Dn-Mt for geh-help-gnu-emacs@m.gmane.org; Sun, 11 Oct 2009 14:40:47 -0400 Original-Path: news.stanford.edu!usenet.stanford.edu!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail Original-Newsgroups: gnu.emacs.help Original-Lines: 23 Original-X-Trace: individual.net P+m0o+PmYeBnFpXCWT22hwovh4JNcR/NL4DTrCYJAb29gTkoyP Cancel-Lock: sha1:ZWY0ZThhMjFkNzdlMzgxNzlkMGZhNzI1NTQwMjczNDAyMWU3ZTU5NA== sha1:lFstPEjkq8VWKD6e48aUPN1QbPw= Face: iVBORw0KGgoAAAANSUhEUgAAADAAAAAwAQMAAABtzGvEAAAABlBMVEUAAAD///+l2Z/dAAAA oElEQVR4nK3OsRHCMAwF0O8YQufUNIQRGIAja9CxSA55AxZgFO4coMgYrEDDQZWPIlNAjwq9 033pbOBPtbXuB6PKNBn5gZkhGa86Z4x2wE67O+06WxGD/HCOGR0deY3f9Ijwwt7rNGNf6Oac l/GuZTF1wFGKiYYHKSFAkjIo1b6sCYS1sVmFhhhahKQssRjRT90ITWUk6vvK3RsPGs+M1RuR mV+hO/VvFAAAAABJRU5ErkJggg== X-Accept-Language: fr, es, en X-Disabled: X-No-Archive: no User-Agent: Gnus/5.1008 (Gnus v5.10.8) Emacs/22.3 (darwin) Original-Xref: news.stanford.edu gnu.emacs.help:173762 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:68846 Archived-At: Nordlöw writes: > Does the use of the cl macro case() incurr some loss of performance > compare to using cond() instead? (macroexpand '(case (* 2 2 2 2 3) (10 'one) ((24 42) 'two) ((3 33) 'three) (otherwise 'unknown))) --> (let ((--cl-var-- (* 2 2 2 2 3))) (cond ((eql --cl-var-- (quote 10)) (quote one)) ((member* --cl-var-- (quote (24 42))) (quote two)) ((member* --cl-var-- (quote (3 33))) (quote three)) (t (quote unknown)))) What do you think? -- __Pascal Bourguignon__