220 11798 article Path: news.gmane.org!not-for-mail From: Ville Voutilainen Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: N4078: Rvalue reference overloads for value() method returns object by value Date: Thu, 10 Jul 2014 12:01:14 +0300 Lines: 23 Approved: news@gmane.org Message-ID: References: <4DA018C3-2327-4F55-B7F8-7988EC7B789A@gmail.com> <1a858a77-310b-4591-aaf5-960c40d9f5fc@isocpp.org> <66AF41C1-CB37-4311-98EA-D47DBC6068DC@gmail.com> <66c38b61-7a95-4ace-b34f-2346bb334fb9@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 1404982883 6550 80.91.229.3 (10 Jul 2014 09:01:23 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Thu, 10 Jul 2014 09:01:23 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBC5JHI7A7ALRBWVM7GOQKGQEVX5E3RA@isocpp.org Thu Jul 10 11:01:17 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-qg0-f71.google.com ([209.85.192.71]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1X5AE7-00061I-U1 for gclcip-std-proposals@m.gmane.org; Thu, 10 Jul 2014 11:01:16 +0200 Original-Received: by mail-qg0-f71.google.com with SMTP id f51sf265004qge.6 for ; Thu, 10 Jul 2014 02:01:15 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:mime-version:in-reply-to:references:date :message-id:subject:from:to:x-original-sender :x-original-authentication-results:reply-to:precedence:mailing-list :list-id:list-post:list-help:list-archive:list-subscribe :list-unsubscribe:content-type; bh=1wx1N9DsvZ8eOggkdn+OXOBQR6uyVCuK80OXwbKwRu4=; b=ePmjmLcmALXpQAgw7j4PO21GAy/PJEu2iFXoJAGjyPQ2v79RVqFnYPKI9lL/mJW3kZ 9zXG7+0CexIrZQwY5xv8lqoCIqLDmf7GQPkDse8GP38oKGmQviXy1M8QdW6Mqi7BvJZq X+nyTdnhd4okxQDPedj6c2z7sWB3DElTvDKYY5fN4gniJUl1Yixyuskw0XpgV+dx1MaC ZskR9m/qeN3PhoRMnaoZZb+Bzoc0q71xTgdU/qqdkbzg2tXGlkU1p5CQuSgdld/iws8g uiLecTDFmOJXkP+n+BmQpASRpHQencH1zh0EMj8/NRrncczy9U71/p48StKuP5z1wSSk hrIA== X-Gm-Message-State: ALoCoQn7te5Ql1x9j3pWBipJBLCDzsH7Dp8l2Riczmd7XtsBoKv8itk2nCpRzNwQPRUk9USL9HUc X-Received: by 10.236.230.106 with SMTP id i100mr19321926yhq.27.1404982875152; Thu, 10 Jul 2014 02:01:15 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.140.98.11 with SMTP id n11ls6386qge.11.gmail; Thu, 10 Jul 2014 02:01:14 -0700 (PDT) X-Received: by 10.140.85.166 with SMTP id n35mr72409269qgd.67.1404982874471; Thu, 10 Jul 2014 02:01:14 -0700 (PDT) Original-Received: from mail-qg0-x230.google.com (mail-qg0-x230.google.com [2607:f8b0:400d:c04::230]) by mx.google.com with ESMTPS id b3si63191368qak.97.2014.07.10.02.01.14 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Thu, 10 Jul 2014 02:01:14 -0700 (PDT) Received-SPF: pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:400d:c04::230 as permitted sender) client-ip=2607:f8b0:400d:c04::230; Original-Received: by mail-qg0-f48.google.com with SMTP id q108so7201933qgd.7 for ; Thu, 10 Jul 2014 02:01:14 -0700 (PDT) X-Received: by 10.140.109.118 with SMTP id k109mr73087680qgf.98.1404982874362; Thu, 10 Jul 2014 02:01:14 -0700 (PDT) Original-Received: by 10.224.31.137 with HTTP; Thu, 10 Jul 2014 02:01:14 -0700 (PDT) In-Reply-To: X-Original-Sender: ville.voutilainen@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:400d:c04::230 as permitted sender) smtp.mail=ville.voutilainen@gmail.com; dkim=pass header.i=@gmail.com; dmarc=pass (p=NONE dis=NONE) header.from=gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: 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:11798 Archived-At: On 10 July 2014 11:58, David Krauss wrote: > Risky micro-optimization should never be the default. If It's not a micro-optimization. > forward-by-reference returns are sometimes desired for performance, then add > them under a function name like forward_*() or provide a suitable additional > sibling to std::forward() to handle such cases. Do not foist the hack on > everyone. The standard library already "foists the hack" on everyone. For, apparently, good reasons. -- --- 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/. .