220 11752 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: Wed, 9 Jul 2014 22:39:18 +0300 Lines: 25 Approved: news@gmane.org Message-ID: References: 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 1404934769 4394 80.91.229.3 (9 Jul 2014 19:39:29 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 9 Jul 2014 19:39:29 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBC5JHI7A7ALRBZVU62OQKGQEZJYVFSI@isocpp.org Wed Jul 09 21:39:24 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pa0-f71.google.com ([209.85.220.71]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1X4xi6-0004G8-ID for gclcip-std-proposals@m.gmane.org; Wed, 09 Jul 2014 21:39:22 +0200 Original-Received: by mail-pa0-f71.google.com with SMTP id eu11sf53368510pac.2 for ; Wed, 09 Jul 2014 12:39:21 -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=F6Suhrh0Air/GJlwjzD5Wiroz2FxtmY7COg+1raGpuY=; b=AeQcrY3+V7tUrlUfUI5UK6oCEeoigA2WeblIEDlBHPA6q+Ko/hxfAG0IhTI0AMWN+k f7NVhXmyUsoAuLZTdnVWOiGj2hoAL3pRji6lFLj9iIG87jCWBjFfHGJyFrEItIk29Ti/ bFNM7MlMkzR6HXO/EtDlCMeFnL1Uu7AztsR5jo8roxImnydD8Td3xtLydzDoWCu/fWzf k8zK2Euk3bHFveacKVHYxtyoUQ4IP2gMl850QhLaxIWM9uGUuSXM7R7X40C/qlaWyrW9 57mSW4RSZ99Cn/YcQ9GWleNm0A25rCJO2QPz6LaFTqjduvBZvUjnNCSabkruxMVaaFyq aTcA== X-Gm-Message-State: ALoCoQnvf2YxDOYpDIMrUNBl8FJ06s2PL3b+qIpE0lQ6NX8j3bl+AyMM4LM6QSYo9iBbVsYP81vi X-Received: by 10.66.121.2 with SMTP id lg2mr10538575pab.43.1404934761118; Wed, 09 Jul 2014 12:39:21 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.140.30.165 with SMTP id d34ls2593376qgd.25.gmail; Wed, 09 Jul 2014 12:39:18 -0700 (PDT) X-Received: by 10.53.4.11 with SMTP id ca11mr1568948vdd.72.1404934758261; Wed, 09 Jul 2014 12:39:18 -0700 (PDT) Original-Received: from mail-vc0-x235.google.com (mail-vc0-x235.google.com [2607:f8b0:400c:c03::235]) by mx.google.com with ESMTPS id kh9si21970250vdb.21.2014.07.09.12.39.18 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Wed, 09 Jul 2014 12:39:18 -0700 (PDT) Received-SPF: pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:400c:c03::235 as permitted sender) client-ip=2607:f8b0:400c:c03::235; Original-Received: by mail-vc0-f181.google.com with SMTP id il7so8008714vcb.26 for ; Wed, 09 Jul 2014 12:39:18 -0700 (PDT) X-Received: by 10.220.81.194 with SMTP id y2mr26342074vck.29.1404934758161; Wed, 09 Jul 2014 12:39:18 -0700 (PDT) Original-Received: by 10.224.31.137 with HTTP; Wed, 9 Jul 2014 12:39:18 -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:f8b0:400c:c03::235 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:11752 Archived-At: On 9 July 2014 22:22, 'Jeffrey Yasskin' via ISO C++ Standard - Future Proposals wrote: >> I think the "yes, moving twice is fine, but what if the move ends up >> copying?" issue >> and the "perfect-forwarding the underlying value from an optional >> becomes tricky" >> issue are worth discussing in LEWG. They certainly change my (minor) preference. > > SGTM. Can you file a "NEEDS_DISCUSSION" issue on > https://issues.isocpp.org/? We'll also need an NB comment on the PDTS > if we're going to fix it for V1. Filed as https://issues.isocpp.org/show_bug.cgi?id=45 The NB comment can also probably be arranged. ;) -- --- 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/. .