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: type-of semantics unclear for records Date: Tue, 04 Apr 2017 21:10:48 -0400 Message-ID: References: <5a8f7878-6731-2d9f-36dc-52f06e680697@cs.ucla.edu> NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain X-Trace: blaine.gmane.org 1491354938 12555 195.159.176.226 (5 Apr 2017 01:15:38 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 5 Apr 2017 01:15:38 +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 Wed Apr 05 03:15:35 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 1cvZXf-0001mj-6h for ged-emacs-devel@m.gmane.org; Wed, 05 Apr 2017 03:15:23 +0200 Original-Received: from localhost ([::1]:38294 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cvZXl-0003uG-8K for ged-emacs-devel@m.gmane.org; Tue, 04 Apr 2017 21:15:29 -0400 Original-Received: from eggs.gnu.org ([2001:4830:134:3::10]:58218) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1cvZXf-0003tx-UO for emacs-devel@gnu.org; Tue, 04 Apr 2017 21:15:24 -0400 Original-Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1cvZXa-0007Z4-ED for emacs-devel@gnu.org; Tue, 04 Apr 2017 21:15:23 -0400 Original-Received: from [195.159.176.226] (port=45418 helo=blaine.gmane.org) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_128_CBC_SHA1:16) (Exim 4.71) (envelope-from ) id 1cvZXa-0007Yf-7z for emacs-devel@gnu.org; Tue, 04 Apr 2017 21:15:18 -0400 Original-Received: from list by blaine.gmane.org with local (Exim 4.84_2) (envelope-from ) id 1cvZXO-0000Ne-Vl for emacs-devel@gnu.org; Wed, 05 Apr 2017 03:15:06 +0200 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 8 Original-X-Complaints-To: usenet@blaine.gmane.org Cancel-Lock: sha1:6pOlvXV/Lqshd8ZBlXDSg3tf/dE= 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:213662 Archived-At: > I assume the behavior is intended to support subclassing of some sort; if so No, it's just that the first field can be a type name (a symbol) or a type descriptor (a record, where the first field holds the corresponding type name). Stefan