220 32507 article Path: news.gmane.org!.POSTED!not-for-mail From: Ville Voutilainen Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Allow Structured Binding Outside of Variable Declaration Date: Wed, 17 May 2017 02:17:10 +0300 Lines: 30 Approved: news@gmane.org Message-ID: References: <10b21241-b683-44d5-82ce-90681b2643a4@isocpp.org> <08ff73f1-6989-393e-ee4e-8158af2e7bed@honermann.net> <20170516164245.GA16348@fukushima.lysator.liu.se> <586c2633-4586-12d8-35ae-75ebab176ff8@honermann.net> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" X-Trace: blaine.gmane.org 1494976632 11717 195.159.176.226 (16 May 2017 23:17:12 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 16 May 2017 23:17:12 +0000 (UTC) To: "ISO C++ Standard - Future Proposals" Original-X-From: std-proposals+bncBC5JHI7A7ALRB54Q53EAKGQEMAXKPAA@isocpp.org Wed May 17 01:17:08 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-it0-f71.google.com ([209.85.214.71]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dAliF-0002vA-Aq for gclcip-std-proposals@m.gmane.org; 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[2607:f8b0:4003:c06::236]) by mx.google.com with ESMTPS id o81si101418ota.292.2017.05.16.16.17.11 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 May 2017 16:17:11 -0700 (PDT) Received-SPF: pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:4003:c06::236 as permitted sender) client-ip=2607:f8b0:4003:c06::236; Original-Received: by mail-oi0-x236.google.com with SMTP id h4so44603226oib.3 for ; Tue, 16 May 2017 16:17:11 -0700 (PDT) X-Received: by 10.157.38.143 with SMTP id l15mr285359otb.160.1494976631298; Tue, 16 May 2017 16:17:11 -0700 (PDT) Original-Received: by 10.157.17.253 with HTTP; Tue, 16 May 2017 16:17:10 -0700 (PDT) In-Reply-To: X-Original-Sender: ville.voutilainen@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com; spf=pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:4003:c06::236 as permitted sender) smtp.mailfrom=ville.voutilainen@gmail.com; dmarc=pass (p=NONE sp=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:32507 Archived-At: On 17 May 2017 at 01:41, Arthur O'Dwyer wrote: > Speaking of "being able to declare a variable instead of a binding", this > morning I ran across this example due to Tony van Eerd: > > struct Foo { > int x = 0; > std::string str = "world"; > ~Foo() { std::cout << str; } > }; > > int main() { > auto [i, s] = Foo(); > std::cout << "hello "; > s = "structured bindings"; > // Foo's destructor prints "hello structured bindings"! > } > > ...which is the nail in the coffin of "ever using C++17 structured bindings > in production code" AFAIC. ...because you insist on thinking that the bindings do something that they do not? -- You received this message because you are subscribed to the Google Groups "ISO C++ Standard - Future Proposals" group. 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