220 24980 article Path: news.gmane.org!not-for-mail From: "'Walt Karas' via ISO C++ Standard - Future Proposals" Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: "Components" template with implicitly defined partial specializations for all classes Date: Sat, 5 Mar 2016 16:09:10 -0800 (PST) Lines: 157 Approved: news@gmane.org Message-ID: References: <56D9E17F.2070202@wanadoo.fr> <2b0bcca0-0939-49f7-939b-4d688f8dfe34@isocpp.org> <324dbff9-84da-46f2-b2f3-3d9fe0cc2082@isocpp.org> <56DA88DF.90000@wanadoo.fr> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_2036_136670969.1457222951009" X-Trace: ger.gmane.org 1457222960 2680 80.91.229.3 (6 Mar 2016 00:09:20 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sun, 6 Mar 2016 00:09:20 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBDFLZXWOVYIBBKHK5W3AKGQEDZGKKSY@isocpp.org Sun Mar 06 01:09:15 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pa0-f70.google.com ([209.85.220.70]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1acMG2-0007Hq-Ox for gclcip-std-proposals@m.gmane.org; Sun, 06 Mar 2016 01:09:14 +0100 Original-Received: by mail-pa0-f70.google.com with SMTP id a7sf118182622pax.1 for ; Sat, 05 Mar 2016 16:09:14 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :x-original-sender:reply-to:precedence:mailing-list:list-id :x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=QCL+XZGqBoUzDV2XsHyBY26UMvXNjdS0o+ULPFUB81M=; b=FQH7YUMdYHE4ZcrJNWTnl9YI/noH8W9W8fU0WeFvMdM3Owt/TN+ZG8xh6WlN65Xi13 giSrH0+8NpBQoaC8tVdRGdJW2w+oh2zOF3Mb14IvE+qNkTHtjJR3udmjrk0OF0cNehJ9 eHwQ0+MRqYDePZ9W5/p48G6v6C7BBV5Vj1bBN2h0yPdJseqzOXnZ0Aw/tgfT2yI6N1wq 2vVgBYKEPlTMc87fYD42oQIRZKmnmjGt5bmbLYrlaDYaibthkrZIPxqHLdvWGY3KX7qP RmaU4yJuizO55+F6POgGwGt4EmSowrm3lvdaZlPDkYzqJRdmsBo3P8vM05UXvlcfu4Kw ToEg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:message-id:in-reply-to:references :subject:mime-version:x-original-sender:reply-to:precedence :mailing-list:list-id:x-spam-checked-in-group:list-post:list-help :list-archive:list-subscribe:list-unsubscribe; bh=QCL+XZGqBoUzDV2XsHyBY26UMvXNjdS0o+ULPFUB81M=; b=Ve1w4yXd5X9IYO7psH2wnMd7so0d+daNeWHOEoKh+UjGDJQXHA12PyAPz/R9ZsbN4K 6mSf5o5wmCWFOFkPuUGTBgO1SK6oHafa0Gx5i81UC+9obpyRbs6Ik+r7tepBdi6Cma6q WPj3Mp43VzRT0A7CG0Wjq+UMKYQ2BpoCI+mQbjk7XKbfw6lOnQ93OEBCOwBNIDJf/czT JDCu8ynljZVBA7E5mtDQTrqysHiHlaoCeIzBY1Hrwu2usW7DbPp8nnYbFdQlWmHpY+S5 efNgLVHy4w0HPN+pzPM55Q4xJmlWIVARV0i1ejMWK/puB8ha4XzjH5ypFIVWYzNw2EVl ICSw== X-Gm-Message-State: AD7BkJLvroV0HSwhqYyr5veL3tYOy8/Y2WbB2BjeMmrIFbLLTYMBsDeT+GW8GEnoECiCqw== X-Received: by 10.66.55.74 with SMTP id q10mr1563149pap.12.1457222953778; Sat, 05 Mar 2016 16:09:13 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.107.155.210 with SMTP id d201ls585500ioe.100.gmail; Sat, 05 Mar 2016 16:09:12 -0800 (PST) X-Received: by 10.50.88.3 with SMTP id bc3mr110884igb.6.1457222952202; Sat, 05 Mar 2016 16:09:12 -0800 (PST) In-Reply-To: <56DA88DF.90000@wanadoo.fr> X-Original-Sender: wkaras@yahoo.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org X-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , X-Original-From: Walt Karas Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:24980 Archived-At: ------=_Part_2036_136670969.1457222951009 Content-Type: multipart/alternative; boundary="----=_Part_2037_665169538.1457222951010" ------=_Part_2037_665169538.1457222951010 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable On Saturday, March 5, 2016 at 2:21:06 AM UTC-5, Vicente J. Botet Escriba=20 wrote: > > Le 05/03/2016 03:08, 'Walt Karas' via ISO C++ Standard - Future Proposals= =20 > a =C3=A9crit : > > > > On Friday, March 4, 2016 at 8:22:12 PM UTC-5, Nicol Bolas wrote:=20 >> >> On Friday, March 4, 2016 at 2:53:26 PM UTC-5, Walt Karas wrote:=20 >>> >>> Personally I'm more interested in a generic endiance-swap function=20 >>> template. The books will be open in 2017, new features will be made, I= 'm=20 >>> selfishly thinking of the needs on my own turf. But why not do it in a= way=20 >>> that is more general, provides for multiple needs? >>> >> >> Yes... that's what *reflection* will do. Your way is the more=20 >> special-case and restrictive way. >> > > Are there other papers proposing support for reflection, besides p0255r0 = ? > > > > > Yes, look at > > http://www.open-std.org/jtc1/sc22/wg21/docs/papers/2016/. > > Vicente > I think it's a bad choice to not seriously consider a class=20 introspection/reflection capability that can support providing comparison= =20 operators as library templates. Maybe these do, but it's not clear to me. --=20 You received this message because you are subscribed to the Google Groups "= ISO C++ Standard - Future Proposals" group. To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. To view this discussion on the web visit https://groups.google.com/a/isocpp= ..org/d/msgid/std-proposals/c303f05a-15d4-445f-81f8-e12f67842bcc%40isocpp.or= g. ------=_Part_2037_665169538.1457222951010 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable


On Saturday, March 5, 2016 at 2:21:06 AM UTC-5, Vi= cente J. Botet Escriba wrote:
=20 =20 =20
Le 05/03/2016 03:08, 'Walt Karas' via ISO C++ Standard - Future Proposals a =C3=A9crit=C2=A0:


On Friday, March 4, 2016 at 8:22:12 PM UTC-5, Nicol Bolas wrote:
On Friday, March 4, 2016 at 2:53:26 PM UTC-5, Walt Karas wrote:
Personally I'm more interested in a gene= ric endiance-swap function template.=C2=A0 The books will be op= en in 2017, new features will be made, I'm selfishly thinking of the needs on my own turf.=C2=A0 But why not do = it in a way that is more general, provides for multiple needs?

Yes... that's what reflection will do. Your way is the more special-case and restrictive way.

Are there other papers proposing support for reflection, besides p0255r0 ?

Yes, look at

http://www.open-std.org/jtc1/sc22/wg21/docs/pap= ers/2016/.

Vicente

I think it's a ba= d choice to not seriously consider a class introspection/reflection capabil= ity that can support providing comparison operators as library templates. = =C2=A0Maybe these do, but it's not clear to me.

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