220 21350 <00B1216C-BB35-4C7C-9BAF-9C59A996156A@gmail.com> article Path: news.gmane.org!not-for-mail From: David Krauss Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Conversion from lvalue to rvalue Date: Tue, 6 Oct 2015 21:35:23 +0800 Lines: 83 Approved: news@gmane.org Message-ID: <00B1216C-BB35-4C7C-9BAF-9C59A996156A@gmail.com> References: <31dedac5-7d51-402c-946e-0555c925f70d@isocpp.org> <116a66a2-90ea-4269-ac85-3432ff7094b0@isocpp.org> <42447957-4276-4f59-89b6-ab4be37c47c6@isocpp.org> <2C19913E-B6BC-423D-8570-939C3A573CDF@gmail.com> <67427BA5-818F-4C32-92DA-E8C07429CC26@gmail.com> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 (Mac OS X Mail 8.2 \(2104\)) Content-Type: multipart/alternative; boundary="Apple-Mail=_5C25EF5D-C51C-4E22-823C-8984A5861BEE" X-Trace: ger.gmane.org 1444138531 5805 80.91.229.3 (6 Oct 2015 13:35:31 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 6 Oct 2015 13:35:31 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCW25A7E3QCRBH44Z6YAKGQEYKMPBIA@isocpp.org Tue Oct 06 15:35:31 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pd0-f197.google.com ([209.85.192.197]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZjSOw-0006dq-2Q for gclcip-std-proposals@m.gmane.org; Tue, 06 Oct 2015 15:35:30 +0200 Original-Received: by pdnr2 with SMTP id r2sf379050109pdn.0 for ; Tue, 06 Oct 2015 06:35:28 -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:content-type:message-id:mime-version :subject:date:references:to:in-reply-to: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=L5LQkAUOmx3jmKKxoc8bfHA/VTQYjDQat6SIfVlgf6s=; b=kCk5TsGePSw8UaVqaz0xswOSs8Gnf9WkoTxQBGvDD6R2jFT6nl93ueI7my5cmzga3g E8g6Dsnxj6oKSDLcgMNHbQ/RuJAfyLWHPiHTn+ozr2WiUEDE30yCUjaLlbyCC7MG9jxe OWP4xYIuN9ko1Zx09P78qn9/w1SuhUDXwQsb6oqrjf48Qc5MgQZ6JNWHdmBDklaQ9ECT lfqNAuMeJAaMhmu7LsKe9ojPDDoplHboDVu60vac60D0osyMbjIqncQLGeqESfwmyIxj o7QPN4awbzXwEQDyH5sgvX4h21nJEBKXP158NR2m5KUphruQTA1dVCK8LFbhJVle8It2 sMTA== X-Gm-Message-State: ALoCoQnofrPi3oektiKdPzt8GSO5VzWTSpCLfjLSYpaxxFZ2L0sVyZn9w2d/+kA4Pq3q1dXh7qU/ X-Received: by 10.68.138.132 with SMTP id qq4mr30888154pbb.11.1444138528215; Tue, 06 Oct 2015 06:35:28 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.107.30.65 with SMTP id e62ls2195196ioe.49.gmail; Tue, 06 Oct 2015 06:35:27 -0700 (PDT) X-Received: by 10.66.122.98 with SMTP id lr2mr46900855pab.146.1444138527356; Tue, 06 Oct 2015 06:35:27 -0700 (PDT) Original-Received: from mail-pa0-x22b.google.com (mail-pa0-x22b.google.com. [2607:f8b0:400e:c03::22b]) by mx.google.com with ESMTPS id jo6si48992244pbc.90.2015.10.06.06.35.27 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 06 Oct 2015 06:35:27 -0700 (PDT) Received-SPF: pass (google.com: domain of potswa@gmail.com designates 2607:f8b0:400e:c03::22b as permitted sender) client-ip=2607:f8b0:400e:c03::22b; Original-Received: by pacex6 with SMTP id ex6so211200361pac.0 for ; Tue, 06 Oct 2015 06:35:27 -0700 (PDT) X-Received: by 10.66.136.39 with SMTP id px7mr46697701pab.23.1444138527052; Tue, 06 Oct 2015 06:35:27 -0700 (PDT) Original-Received: from [172.20.10.2] ([121.54.54.184]) by smtp.gmail.com with ESMTPSA id tj2sm33804763pab.4.2015.10.06.06.35.25 for (version=TLSv1/SSLv3 cipher=OTHER); Tue, 06 Oct 2015 06:35:26 -0700 (PDT) In-Reply-To: X-Mailer: Apple Mail (2.2104) X-Original-Sender: potswa@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of potswa@gmail.com designates 2607:f8b0:400e:c03::22b as permitted sender) smtp.mailfrom=potswa@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-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:21350 Archived-At: --Apple-Mail=_5C25EF5D-C51C-4E22-823C-8984A5861BEE Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset=UTF-8 > On 2015=E2=80=9310=E2=80=9306, at 9:18 PM, Agust=C3=ADn K-ballo Berg=C3= =A9 wrote: >=20 > What I meant was your email is surprising, it does not seem to be answeri= ng to anything I have said. I wonder if I am just missing it. You mentioned that decay_copy creates unnecessary copies (3/3 value categor= ies). My point is that auto{} creates slightly fewer (2/3), and my proposal= enables a solution which is ideal (1/3, only lvalues are copied). Also I mentioned a problem between my proposal and the tie() example, but t= hat=E2=80=99s fine, no problem =E2=80=94 no reference to a temporary is ret= ained. I=E2=80=99ve got a little flu today and the synapses aren=E2=80=99t = firing so well. --=20 ---=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. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposa= ls/. --Apple-Mail=_5C25EF5D-C51C-4E22-823C-8984A5861BEE Content-Transfer-Encoding: quoted-printable Content-Type: text/html; charset=UTF-8
On 2015=E2=80=9310= =E2=80=9306, at 9:18 PM, Agust=C3=ADn K-ballo Berg=C3=A9 <kaballo86@hotmail.com> wrote:<= /div>
What I meant= was your email is surprising, it does not seem to be answering to anything= I have said. I wonder if I am just missing it.

You me= ntioned that decay_copy creates un= necessary copies (3/3 value categories). My point is that auto{} creates slightly fewer (2/3), and my proposa= l enables a solution which is ideal (1/3, only lvalues are copied).

Also I mentioned a probl= em between my proposal and the tie()= example, but that=E2=80=99s fine, no problem =E2=80=94 no reference= to a temporary is retained. I=E2=80=99ve got a little flu today and the sy= napses aren=E2=80=99t firing so well.

<= /div>

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To unsubscribe from this group and stop receiving emails from it, send an e= mail to std-proposa= ls+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/<= /a>.
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