220 11841 article Path: news.gmane.org!not-for-mail From: David Krauss Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: N4078: Rvalue reference overloads for value() method returns object by value Date: Fri, 11 Jul 2014 17:02:01 +0800 Lines: 25 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> <6F4B3C72-9962-48DC-8527-0C89EA1B9710@gmail.com> <35873CE5-ED8C-4C03-A6A1-E4132DECD91F@gmail.com> <335948E6-8140-4673-B958-930356A52070@gmail.com> <76ACA175-5A44-4BE8-B49F-BAC6DA65E6B1@gmail.com> <4D3852AD-1AEB-44BA-941C-D645BAD19405@gmail.com> <6a4b6425-1167-40c1-acd8-3945c8cd4c74@isocpp.org> <13DD0D7A-A146-4667-9F30-6FB3739CDBE0@gmail.com> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 (Mac OS X Mail 7.3 \(1878.6\)) Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable X-Trace: ger.gmane.org 1405069339 14534 80.91.229.3 (11 Jul 2014 09:02:19 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Fri, 11 Jul 2014 09:02:19 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBCW25A7E3QCRBD6Q72OQKGQEXZDXQZA@isocpp.org Fri Jul 11 11:02:12 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-yk0-f200.google.com ([209.85.160.200]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1X5WiW-0001zA-PH for gclcip-std-proposals@m.gmane.org; Fri, 11 Jul 2014 11:02:09 +0200 Original-Received: by mail-yk0-f200.google.com with SMTP id 20sf2013974yks.3 for ; Fri, 11 Jul 2014 02:02:07 -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:subject:from:in-reply-to:date :message-id:references: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:content-transfer-encoding; bh=Oe07g6ZQDQyiRV/pQ2d1hfPB8ryuRUg621d6yAJAMCg=; b=LpIIb6JfcFKQpjb/NmqGG3N2TtCX61CrhJlpKjrEPb10ZLjocddbiUCZ7A8WJ9ZmpT JaswvsEtZ4oulhmHpBxu718Ia/HgaJKg74/KvKxhxhmpBAxnITsU4Edb956sR1nHaf5Q zF0nzPwuvXXTwC8luQQl/iYg2+kAuRdYxQygVThl11VHoYaNstKYrENZ0dYic4VsMZoT iMW2VNl9o8LwMe2YgRAUa/TlgPh6M9zDwkgeS3iimkO/Y5Jd1mi1H9R2Ou+y2OGvYB2M Z0RlkqyxepRXNZVGUBqJGlsRB+DUjzMnR8IzLlk5JM6TQKL0vMnhOIfrjgkYGezImNpy r5Hw== X-Gm-Message-State: ALoCoQl2iBDFBkcHDrlq3m4lUYWgKwOSDsU80IH++P8eN5wdJb86ybt88be2cYFbsVQqjXoG8J1X X-Received: by 10.58.219.105 with SMTP id pn9mr26130011vec.30.1405069327833; Fri, 11 Jul 2014 02:02:07 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.50.128.167 with SMTP id np7ls227612igb.37.gmail; Fri, 11 Jul 2014 02:02:07 -0700 (PDT) X-Received: by 10.42.203.202 with SMTP id fj10mr3057824icb.86.1405069327164; Fri, 11 Jul 2014 02:02:07 -0700 (PDT) Original-Received: from mail-ig0-x234.google.com (mail-ig0-x234.google.com [2607:f8b0:4001:c05::234]) by mx.google.com with ESMTPS id ih4si2238607igb.48.2014.07.11.02.02.07 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 11 Jul 2014 02:02:07 -0700 (PDT) Received-SPF: pass (google.com: domain of potswa@gmail.com designates 2607:f8b0:4001:c05::234 as permitted sender) client-ip=2607:f8b0:4001:c05::234; Original-Received: by mail-ig0-f180.google.com with SMTP id l13so759528iga.13 for ; Fri, 11 Jul 2014 02:02:07 -0700 (PDT) X-Received: by 10.50.43.202 with SMTP id y10mr2740315igl.10.1405069327006; Fri, 11 Jul 2014 02:02:07 -0700 (PDT) Original-Received: from [172.20.10.2] ([121.54.54.43]) by mx.google.com with ESMTPSA id e4sm4245384igx.4.2014.07.11.02.02.05 for (version=TLSv1 cipher=ECDHE-RSA-RC4-SHA bits=128/128); Fri, 11 Jul 2014 02:02:06 -0700 (PDT) In-Reply-To: X-Mailer: Apple Mail (2.1878.6) X-Original-Sender: potswa@gmail.com X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of potswa@gmail.com designates 2607:f8b0:4001:c05::234 as permitted sender) smtp.mail=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-Google-Group-Id: 399137483710 List-Post: , List-Help: , List-Archive: List-Subscribe: , List-Unsubscribe: , Xref: news.gmane.org gmane.comp.lang.c++.isocpp.proposals:11841 Archived-At: On 2014=E2=80=9307=E2=80=9311, at 4:58 PM, Tomasz Kami=C5=84ski wrote: > Could you please provide me actuall code example that is actually broken = by introduction of T&& operator*() && to existing set of overloads? Id did = not found any in your post, only The generic statment tha will broek the li= brary/code. As was discussed earlier, return-by-xvalue does not work with local univers= al references. Universal references are not just a cute thing that trendy p= rogrammers like to sprinkle around, they provide a way for generic code to = bind a name to something which may or may not be a reference. --=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/. .