From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: Emanuel Berg Newsgroups: gmane.emacs.help Subject: Re: why are there [v e c t o r s] in Lisp? Date: Sat, 17 Oct 2015 01:30:50 +0200 Message-ID: <87io66pf11.fsf@debian.uxu> References: <87mvvjeg29.fsf@kuiper.lan.informatimago.com> <87io67pmr7.fsf@debian.uxu> <87mvvjzgup.fsf@fastmail.com> <87d1wfplu5.fsf@debian.uxu> <87io67zfl0.fsf@fastmail.com> NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: ger.gmane.org 1445037734 30732 80.91.229.3 (16 Oct 2015 23:22:14 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 16 Oct 2015 23:22:14 +0000 (UTC) To: help-gnu-emacs@gnu.org Original-X-From: help-gnu-emacs-bounces+geh-help-gnu-emacs=m.gmane.org@gnu.org Sat Oct 17 01:22:05 2015 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 1ZnEK2-00017n-Ky for geh-help-gnu-emacs@m.gmane.org; Sat, 17 Oct 2015 01:22:02 +0200 Original-Received: from localhost ([::1]:56277 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZnEK1-00076S-VM for geh-help-gnu-emacs@m.gmane.org; Fri, 16 Oct 2015 19:22:01 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:43287) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZnEJq-00076N-8U for help-gnu-emacs@gnu.org; Fri, 16 Oct 2015 19:21:51 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZnEJl-00080R-C7 for help-gnu-emacs@gnu.org; Fri, 16 Oct 2015 19:21:50 -0400 Original-Received: from plane.gmane.org ([80.91.229.3]:34802) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZnEJl-0007zT-4S for help-gnu-emacs@gnu.org; Fri, 16 Oct 2015 19:21:45 -0400 Original-Received: from list by plane.gmane.org with local (Exim 4.69) (envelope-from ) id 1ZnEJe-0000cj-C4 for help-gnu-emacs@gnu.org; Sat, 17 Oct 2015 01:21:38 +0200 Original-Received: from nl106-137-244.student.uu.se ([130.243.137.244]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 17 Oct 2015 01:21:38 +0200 Original-Received: from embe8573 by nl106-137-244.student.uu.se with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sat, 17 Oct 2015 01:21:38 +0200 X-Injected-Via-Gmane: http://gmane.org/ Mail-Followup-To: help-gnu-emacs@gnu.org Original-Lines: 23 Original-X-Complaints-To: usenet@ger.gmane.org X-Gmane-NNTP-Posting-Host: nl106-137-244.student.uu.se Mail-Copies-To: never User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/24.4 (gnu/linux) Cancel-Lock: sha1:OBpIOie6bYnaD6YFmYeQnImMz6Y= 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:107682 Archived-At: Random832 writes: > The thing is, if you can car a string people will > wonder why you can't cdr it. And with mutable > objects it's hard to make cdr work right. (fsvo > "right") You can't `car' a string or do anything with it that requires it to be a list, because it isn't. If you try to car it, the string will fail the `listp' test. But because it is natural to think of strings as lists of chars, perhaps from the C days of, say char *str = malloc(strlen(argv[argc - 1])); or actually because it is normal for humans to think of strings that way, it should be pointed out - and now that has happened - that the "string" syntax isn't a shorthand for creating lists of chars. -- underground experts united http://user.it.uu.se/~embe8573