From mboxrd@z Thu Jan 1 00:00:00 1970 Path: news.gmane.org!not-for-mail From: ludo@chbouib.org (Ludovic =?iso-8859-1?Q?Court=E8s?=) Newsgroups: gmane.lisp.guile.devel Subject: Re: make-vtable Date: Sun, 18 Feb 2007 21:05:30 +0100 Message-ID: <878xevz0xh.fsf@chbouib.org> References: <877iunt6yl.fsf@zip.com.au> <87r6suv5k2.fsf@laas.fr> <877iulwxzd.fsf@zip.com.au> <871wktrwur.fsf@laas.fr> <87649zfib7.fsf@ossau.uklinux.net> NNTP-Posting-Host: lo.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Transfer-Encoding: 8bit X-Trace: sea.gmane.org 1171829184 14477 80.91.229.12 (18 Feb 2007 20:06:24 GMT) X-Complaints-To: usenet@sea.gmane.org NNTP-Posting-Date: Sun, 18 Feb 2007 20:06:24 +0000 (UTC) To: guile-devel@gnu.org Original-X-From: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Sun Feb 18 21:06:10 2007 Return-path: Envelope-to: guile-devel@m.gmane.org Original-Received: from lists.gnu.org ([199.232.76.165]) by lo.gmane.org with esmtp (Exim 4.50) id 1HIsIL-0000rm-QM for guile-devel@m.gmane.org; Sun, 18 Feb 2007 21:06:02 +0100 Original-Received: from localhost ([127.0.0.1] helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HIsIL-0000g3-7H for guile-devel@m.gmane.org; Sun, 18 Feb 2007 15:06:01 -0500 Original-Received: from mailman by lists.gnu.org with tmda-scanned (Exim 4.43) id 1HIsII-0000fy-Jq for guile-devel@gnu.org; Sun, 18 Feb 2007 15:05:58 -0500 Original-Received: from exim by lists.gnu.org with spam-scanned (Exim 4.43) id 1HIsIH-0000fm-2D for guile-devel@gnu.org; Sun, 18 Feb 2007 15:05:57 -0500 Original-Received: from [199.232.76.173] (helo=monty-python.gnu.org) by lists.gnu.org with esmtp (Exim 4.43) id 1HIsIG-0000fj-Re for guile-devel@gnu.org; Sun, 18 Feb 2007 15:05:56 -0500 Original-Received: from main.gmane.org ([80.91.229.2] helo=ciao.gmane.org) by monty-python.gnu.org with esmtps (TLS-1.0:RSA_AES_256_CBC_SHA:32) (Exim 4.52) id 1HIsIG-0002yw-7u for guile-devel@gnu.org; Sun, 18 Feb 2007 15:05:56 -0500 Original-Received: from list by ciao.gmane.org with local (Exim 4.43) id 1HIsIB-0003KV-Ts for guile-devel@gnu.org; Sun, 18 Feb 2007 21:05:52 +0100 Original-Received: from adh419.fdn.fr ([80.67.176.9]) by main.gmane.org with esmtp (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 18 Feb 2007 21:05:51 +0100 Original-Received: from ludo by adh419.fdn.fr with local (Gmexim 0.1 (Debian)) id 1AlnuQ-0007hv-00 for ; Sun, 18 Feb 2007 21:05:51 +0100 X-Injected-Via-Gmane: http://gmane.org/ Original-Lines: 27 Original-X-Complaints-To: usenet@sea.gmane.org X-Gmane-NNTP-Posting-Host: adh419.fdn.fr X-URL: http://www.laas.fr/~lcourtes/ X-Revolutionary-Date: 30 =?iso-8859-1?Q?Pluvi=F4se?= an 215 de la =?iso-8859-1?Q?R=E9volution?= X-PGP-Key-ID: 0xEB1F5364 X-PGP-Key: http://www.laas.fr/~lcourtes/ludovic.asc X-PGP-Fingerprint: 821D 815D 902A 7EAB 5CEE D120 7FBA 3D4F EB1F 5364 X-OS: i486-pc-linux-gnu User-Agent: Gnus/5.110006 (No Gnus v0.6) Emacs/21.4 (gnu/linux) Cancel-Lock: sha1:elyz/Nj7IFiDuxmB2IX4AZXB3pE= X-detected-kernel: Linux 2.6, seldom 2.4 (older, 4) X-BeenThere: guile-devel@gnu.org X-Mailman-Version: 2.1.5 Precedence: list List-Id: "Developers list for Guile, the GNU extensibility library" List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Original-Sender: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Errors-To: guile-devel-bounces+guile-devel=m.gmane.org@gnu.org Xref: news.gmane.org gmane.lisp.guile.devel:6532 Archived-At: Hi, Neil Jerram writes: > ludovic.courtes@laas.fr (Ludovic Courtès) writes: > >> More generally, a three-level architecture like the one you suggest >> would look fishy. For instance, GOOPS and other CLOS derivatives have >> and , representing respectively the "base" and "meta" >> levels, but they have no need for , or >> some such. > > Actually, a lot of the GOOPS doc finds it useful to talk in terms of > three levels: object, class, and metaclass. Right, but a "metaclass" is the class of class, i.e., a class (IOW, a metaclass is an instance of or a sub-class thereof). So that's really two levels. > Also, in practice, I've done a fair amount of programming using GOOPS, > and have found metaclass-level customization extremely useful. I didn't mean to say it's not useful, just that it's maybe not something one wants to know when reading about structs for the first time. Thanks, Ludovic. _______________________________________________ Guile-devel mailing list Guile-devel@gnu.org http://lists.gnu.org/mailman/listinfo/guile-devel