From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!.POSTED!not-for-mail From: Stefan Monnier Newsgroups: gmane.emacs.devel Subject: Re: If records are not sequences, why does aref work on records? Date: Tue, 11 Apr 2017 08:27:54 -0400 Message-ID: References: <86pogo4vty.fsf@molnjunk.nocrew.org> <8360igof0k.fsf@gnu.org> <867f2w4qdk.fsf@molnjunk.nocrew.org> <0e6a0a16-8133-b2bc-404a-d0016f0c655e@cs.ucla.edu> <86h9202knq.fsf@molnjunk.nocrew.org> <4f2a1d4c-8703-4f07-a721-ea28c348631d@default> <864ly02i1m.fsf@molnjunk.nocrew.org> <7342364e-98f9-87d5-72d2-2f2d46d239f3@gmail.com> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1491914065 9316 195.159.176.226 (11 Apr 2017 12:34:25 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 11 Apr 2017 12:34:25 +0000 (UTC) User-Agent: Gnus/5.13 (Gnus v5.13) Emacs/26.0.50 (gnu/linux) To: emacs-devel@gnu.org Original-X-From: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Tue Apr 11 14:34:18 2017 Return-path: Envelope-to: ged-emacs-devel@m.gmane.org Original-Received: from lists.gnu.org ([208.118.235.17]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1cxuzw-0002Bt-5y for ged-emacs-devel@m.gmane.org; Tue, 11 Apr 2017 14:34:16 +0200 Original-Received: from localhost ([::1]:39060 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cxv00-0001v3-JZ for ged-emacs-devel@m.gmane.org; Tue, 11 Apr 2017 08:34:20 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:39555) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cxutz-0005KB-1d for emacs-devel@gnu.org; Tue, 11 Apr 2017 08:28:10 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cxutv-0004La-V9 for emacs-devel@gnu.org; Tue, 11 Apr 2017 08:28:07 -0400 Original-Received: from [195.159.176.226] (port=51686 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cxutv-0004L6-Pl for emacs-devel@gnu.org; Tue, 11 Apr 2017 08:28:03 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1cxutn-0003oB-I7 for emacs-devel@gnu.org; Tue, 11 Apr 2017 14:27:55 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 10 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:OfHNIr4CMscnMYdFEQeqxtvbY44= X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] [fuzzy] X-Received-From: 195.159.176.226 X-BeenThere: emacs-devel@gnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: "Emacs development discussions." List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: emacs-devel-bounces+ged-emacs-devel=m.gmane.org@gnu.org Original-Sender: "Emacs-devel" Xref: news.gmane.org gmane.emacs.devel:213851 Archived-At: > On the other hand, it is wasteful to create myriad 'copy-FOO' > functions that all do the same thing. We may as well have > one function 'copy-struct' function that copies all kinds of sequences. The only reason cl-defstruct defines `copy-FOO` is because Common-Lisp's defstruct does. I can't remember ever seeing Elisp code make use of those "copiers". Stefan