From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.help Subject: Re: Why aren't `find`, `find-if`, `remove-if` part of Emacs Lisp? Date: Fri, 20 Jun 2014 09:45:45 -0400 Message-ID: References: <87d2e78nn7.fsf@gmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1403272004 19774 80.91.229.3 (20 Jun 2014 13:46:44 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 20 Jun 2014 13:46:44 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Fri Jun 20 15:46:37 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 1Wxz9H-0001MX-Sn for geh-help-gnu-emacs@m.gmane.org; Fri, 20 Jun 2014 15:46:36 +0200 Original-Received: from localhost ([::1]:41040 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wxz9H-0005l1-EN for geh-help-gnu-emacs@m.gmane.org; Fri, 20 Jun 2014 09:46:35 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:35336) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wxz8x-0005kJ-NL for help-gnu-emacs@gnu.org; Fri, 20 Jun 2014 09:46:24 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1Wxz8k-0003ai-OF for help-gnu-emacs@gnu.org; Fri, 20 Jun 2014 09:46:15 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:52401) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1Wxz8k-0003aa-Hn for help-gnu-emacs@gnu.org; Fri, 20 Jun 2014 09:46:02 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1Wxz8j-0000jT-E6 for help-gnu-emacs@gnu.org; Fri, 20 Jun 2014 15:46:01 +0200 Original-Received: from 75-119-224-253.dsl.teksavvy.com ([75.119.224.253]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 20 Jun 2014 15:46:01 +0200 Original-Received: from monnier by 75-119-224-253.dsl.teksavvy.com with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Fri, 20 Jun 2014 15:46:01 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 15 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: 75-119-224-253.dsl.teksavvy.com User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4.50 (gnu/linux) Cancel-Lock: sha1:7N50p2RTHjipV+5vpzYVPE7Ouzs= X-detected-operating-system: by eggs.gnu.org: Genre and OS details not recognized. X-Received-From: 80.91.229.3 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:98347 Archived-At: > Ruby: > [0,1,2,3].select( &:odd? ) > ==>[1, 3] Once you have a list object, then obviously, you've loaded that library. Doesn't mean that lists are part of the core language. > # List.filter (fun x -> x > 0) [0;1;2;3] ;; > - : int list = [1; 2; 3] The "List." part proves my point here. Stefan