220 20302 <4038707.19J27rkunV@tjmaciei-mobl4> article Path: news.gmane.org!not-for-mail From: Thiago Macieira Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Progress for universal template parameters Date: Sat, 05 Sep 2015 14:14:33 -0700 Lines: 41 Approved: news@gmane.org Message-ID: <4038707.19J27rkunV@tjmaciei-mobl4> References: <66e52f79-a8b0-4489-bd52-f13a95edf9f3@isocpp.org> <59c548ca-e595-4de1-81e0-a8d580c7a398@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset=UTF-8 X-Trace: ger.gmane.org 1441487698 3947 80.91.229.3 (5 Sep 2015 21:14:58 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Sat, 5 Sep 2015 21:14:58 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCB4TK757YBRBRVWVWXQKGQEK5TKYAI@isocpp.org Sat Sep 05 23:14:50 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-wi0-f200.google.com ([209.85.212.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZYKnP-0002zu-Jk for gclcip-std-proposals@m.gmane.org; Sat, 05 Sep 2015 23:14:47 +0200 Original-Received: by wicuu12 with SMTP id uu12sf15805644wic.2 for ; Sat, 05 Sep 2015 14:14:47 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:subject:date:message-id:user-agent :in-reply-to:references:mime-version:content-type:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=l17biWxLYqlwXxuRNbdRqIWdByXkWTAB3zcY5h6DexI=; b=Ca/jOxlt74ptcFHPqraa4biKLJGWmtqYO49x5he/ZyqSLDvvDzlWRcjJOEnjwPKHSu 7Qn2VG7Oo6w/zcI+tBAzfRayX5eM9nLGFAig0X1W9IHe4PeSPX3Tin7l1qklNNYvf4HO WHGdbVs4m25BQt4TCgFkxBxkrXue/TTANJK4pwVO+d9/aSsCqN0eYmHjMXgNriQPh+Cg g/EP2b197rEanMWJARMlrkO0F35pZfJ1q16Us5EZ+v/61Atv+77cnTTU/eR3XfzwPR5R a4tkGIX6sIIWeDRnGCbqikVFw+dF9dseoQwMj03zafEHYox/+j/JM4FxZ2Ahp2J6vjxe B/sQ= X-Gm-Message-State: ALoCoQmFj7uZhUD1dtPbM2wa+F22rYa+Ozn4Co5f9hJwh88IFgxHbDeAiS4JJcM7wCoIr2KoXmLj X-Received: by 10.152.27.10 with SMTP id p10mr2858136lag.1.1441487687154; Sat, 05 Sep 2015 14:14:47 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.180.205.244 with SMTP id lj20ls345314wic.52.canary; Sat, 05 Sep 2015 14:14:45 -0700 (PDT) X-Received: by 10.194.113.170 with SMTP id iz10mr20658538wjb.58.1441487685964; Sat, 05 Sep 2015 14:14:45 -0700 (PDT) Original-Received: from gondolin.macieira.info (gondolin.macieira.info. [2a01:4f8:d13:f81:21c:14ff:fe01:12a3]) by mx.google.com with ESMTP id gh10si12338947wic.24.2015.09.05.14.14.45 for ; Sat, 05 Sep 2015 14:14:45 -0700 (PDT) Received-SPF: pass (google.com: domain of thiago@macieira.org designates 2a01:4f8:d13:f81:21c:14ff:fe01:12a3 as permitted sender) client-ip=2a01:4f8:d13:f81:21c:14ff:fe01:12a3; Original-Received: from tjmaciei-mobl4.localnet (75-104-69-26.mobility.exede.net [75.104.69.26]) by gondolin.macieira.info (Postfix) with ESMTPSA id 5F87111A542 for ; Sat, 5 Sep 2015 14:14:44 -0700 (PDT) User-Agent: KMail/4.14.9 (Linux/4.1.6-1-desktop; KDE/4.14.9; x86_64; ; ) In-Reply-To: <59c548ca-e595-4de1-81e0-a8d580c7a398@isocpp.org> X-Original-Sender: thiago@macieira.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of thiago@macieira.org designates 2a01:4f8:d13:f81:21c:14ff:fe01:12a3 as permitted sender) smtp.mailfrom=thiago@macieira.org 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: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:20302 Archived-At: On Saturday 05 September 2015 11:59:02 Columbo wrote: > Am Samstag, 5. September 2015 20:52:56 UTC+2 schrieb Nicol Bolas: > > On Saturday, September 5, 2015 at 2:41:14 PM UTC-4, Columbo wrote: > >> A is not accepting everything. A is solely accepting class or alias > >> templates; > > > > So A accepts a type template, which could have any number of parameters of > > any kind. It's not clear what you can actually do with such a type > > template > > of unknown nature. > > Forward it, or instantiate it with arguments from which you know that they > are valid for this template. Sounds like you want a rebind structure instead. struct myrebind { template class TTP> using rebind = myrealtype; }; template struct A { using type = typename rebind::rebind; }; -- Thiago Macieira - thiago (AT) macieira.info - thiago (AT) kde.org Software Architect - Intel Open Source Technology Center PGP/GPG: 0x6EF45358; fingerprint: E067 918B B660 DBD1 105C 966C 33F5 F005 6EF4 5358 -- --- 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 email to std-proposals+unsubscribe@isocpp.org. To post to this group, send email to std-proposals@isocpp.org. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposals/. .