From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: David Kastrup Newsgroups: gmane.emacs.devel Subject: Re: Why aren't there functions such as filter, take-while, etc. "by default"? Date: Mon, 26 Apr 2010 10:35:35 +0200 Organization: Organization?!? Message-ID: <87aasq4nmw.fsf@lola.goethe.zz> References: <87fx2j5wle.fsf@lola.goethe.zz> <87eii24nwb.fsf@lola.goethe.zz> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=us-ascii X-Trace: dough.gmane.org 1272270967 20030 80.91.229.12 (26 Apr 2010 08:36:07 GMT) X-Complaints-To: usenet@dough.gmane.org NNTP-Posting-Date: Mon, 26 Apr 2010 08:36:07 +0000 (UTC) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Mon Apr 26 10:35:59 2010 connect(): No such file or directory Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1O6JnL-0007sV-2x for ged-emacs-devel@m.gmane.org; Mon, 26 Apr 2010 10:35:59 +0200 Original-Received: from localhost ([127.0.0.1]:38074 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1O6JnK-0000vI-Cj for ged-emacs-devel@m.gmane.org; Mon, 26 Apr 2010 04:35:58 -0400 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1O6JnC-0000tE-U0 for emacs-devel@gnu.org; Mon, 26 Apr 2010 04:35:50 -0400 Original-Received: from [140.186.70.92] (port=40595 helo=eggs.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1O6JnB-0000sR-KP for emacs-devel@gnu.org; Mon, 26 Apr 2010 04:35:50 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.69) (envelope-from ) id 1O6Jn9-0001xn-Tf for emacs-devel@gnu.org; Mon, 26 Apr 2010 04:35:49 -0400 Original-Received: from lo.gmane.org ([80.91.229.12]:60620) by eggs.gnu.org with esmtp (Exim 4.69) (envelope-from ) id 1O6Jn9-0001xh-MA for emacs-devel@gnu.org; Mon, 26 Apr 2010 04:35:47 -0400 Original-Received: from list by lo.gmane.org with local (Exim 4.69) (envelope-from ) id 1O6Jn6-0007jC-R2 for emacs-devel@gnu.org; Mon, 26 Apr 2010 10:35:44 +0200 Original-Received: from p5b2c1b55.dip.t-dialin.net ([91.44.27.85]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 26 Apr 2010 10:35:44 +0200 Original-Received: from dak by p5b2c1b55.dip.t-dialin.net with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Mon, 26 Apr 2010 10:35:44 +0200 X-Injected-Via-Gmane: http://gmane.org/ connect(): No such file or directory Original-Lines: 15 Original-X-Complaints-To: usenet@dough.gmane.org X-Gmane-NNTP-Posting-Host: p5b2c1b55.dip.t-dialin.net X-Face: 2FEFf>]>q>2iw=B6, xrUubRI>pR&Ml9=ao@P@i)L:\urd*t9M~y1^:+Y]'C0~{mAl`oQuAl \!3KEIp?*w`|bL5qr,H)LFO6Q=qx~iH4DN; i"; /yuIsqbLLCh/!U#X[S~(5eZ41to5f%E@'ELIi$t^ Vc\LWP@J5p^rst0+('>Er0=^1{]M9!p?&:\z]|;&=NP3AhB!B_bi^]Pfkw User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/23.1.92 (gnu/linux) Cancel-Lock: sha1:njScHOxGZ/SlrBcNdmD9pC78SnE= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.6 (newer, 3) X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.emacs.devel:124215 Archived-At: David Kastrup writes: > Since Lisp, after all, is supposed to be a functional language, I'd like > to see Emacs Lisp not penalize functional programming styles. Currently > it does, Not just With regard to performance, but also input readability (neither `(lambda ... ,outer ...) nor the crutches involving make-symbol are really straightforward), and predictability (dynamic rebinding!). > and so I don't think general-purpose iteration constructs encouraging > lambda predicates are a good idea for now. -- David Kastrup