220 28519 article Path: news.gmane.org!.POSTED!not-for-mail From: Ville Voutilainen Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: A plea to reconsider adding Structured Bindings to language Date: Wed, 5 Oct 2016 13:40:38 +0300 Lines: 29 Approved: news@gmane.org Message-ID: References: <201610051238.17863.marc.mutz@kdab.com> 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 1475664048 13665 195.159.176.226 (5 Oct 2016 10:40:48 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Wed, 5 Oct 2016 10:40:48 +0000 (UTC) Cc: Herb Sutter , Bjarne Stroustrup , Gabriel Dos Reis To: "ISO C++ Standard - Future Proposals" Original-X-From: std-proposals+bncBC5JHI7A7ALRBJ5R2O7QKGQE4GM4VYQ@isocpp.org Wed Oct 05 12:40:43 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-yw0-f199.google.com ([209.85.161.199]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1brjcr-0002If-Vo for gclcip-std-proposals@m.gmane.org; Wed, 05 Oct 2016 12:40:38 +0200 Original-Received: by mail-yw0-f199.google.com with SMTP id 202sf1598500ywx.1 for ; Wed, 05 Oct 2016 03:40:40 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=isocpp-org.20150623.gappssmtp.com; s=20150623; h=mime-version:in-reply-to:references:from:date:message-id:subject:to :cc: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=YXlB+jJwNTFrnTWdQpobq0Trhaszxn2Wo5I9t21pCSo=; b=rZXd3MCozo57PzRgsSYU/bPJKSIFHxU4ZVkQhlAWnXeT7lJUa6TeAFTXO809SLXDom 2TnbPGnizGKkmZ3McxF8HSkqiO1gu3GtuHZnSRsMQBkJqcuwuobuYUxutEcotng5F4pR 9L9Ou3/Ift4TL9PNC/gssPC9UiJnKG3uXzmB28P1lKrEVRxU1NVsrE0WXf+QQgURhXW1 pGD72NQf03zZXyN3S/Vn97eS1ezyCOHoc3PXbBO4ksY0GYyVCX0XTzUbIk1DcjmBMZBZ aA2jxdlX+4SifQIB8thTi2Ajbyc3rQtndlye0G21nelTXRp7cN2jS0GdYv89rrlyzNdy nl6A== 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:from:date :message-id:subject:to:cc: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=YXlB+jJwNTFrnTWdQpobq0Trhaszxn2Wo5I9t21pCSo=; b=cObuEU5cb3XkO+OG9bJa6mCyXfz0c0/O11wAacR1YdjeKiEG0vUXKYwIuFgzVKK5sd 4+vpQ0No0o0SRiVnXPfb/fJUoWhOTMDTDz+3MJh2cffusVMv0eWTBte6TY8HMkEMGZ/g GBhHtxq7ag+yUtoOgmc7BzEYv1YVIpnkrGo0KFWiuX8TsXteIW11bE0PEkXWoX/g4NNU XDqu2FX1dqVg71eEhcbMa3OieTkwtgYwD9zf7m4Ahka1LMdUMRYeQNVYNCKouDfveg0Z uq1lQKY0ijcmo13tvNJZozJmkH0Iy1yM8vNZkM+bAjAm63g1kg4asESDAVl5Wk1RXfpj AP7Q== X-Gm-Message-State: AA6/9RlL8woDVaj7rgOPi0+VuofoGv+xy0UznIflxUHwqjAir42PBAIf8i/hl7sgKtfBtw== X-Received: by 10.129.136.198 with SMTP id y189mr2047373ywf.132.1475664039651; Wed, 05 Oct 2016 03:40:39 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.157.3.212 with SMTP id f78ls377120otf.43.gmail; Wed, 05 Oct 2016 03:40:38 -0700 (PDT) X-Received: by 10.31.154.22 with SMTP id c22mr6078250vke.52.1475664038959; Wed, 05 Oct 2016 03:40:38 -0700 (PDT) Original-Received: from mail-ua0-x22a.google.com (mail-ua0-x22a.google.com. [2607:f8b0:400c:c08::22a]) by mx.google.com with ESMTPS id t185si3893735vka.240.2016.10.05.03.40.38 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 05 Oct 2016 03:40:38 -0700 (PDT) Received-SPF: pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:400c:c08::22a as permitted sender) client-ip=2607:f8b0:400c:c08::22a; Original-Received: by mail-ua0-x22a.google.com with SMTP id r64so42792489uar.3 for ; Wed, 05 Oct 2016 03:40:38 -0700 (PDT) X-Received: by 10.176.16.84 with SMTP id g20mr5661389uab.155.1475664038760; Wed, 05 Oct 2016 03:40:38 -0700 (PDT) Original-Received: by 10.103.104.69 with HTTP; Wed, 5 Oct 2016 03:40:38 -0700 (PDT) In-Reply-To: <201610051238.17863.marc.mutz@kdab.com> 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:f8b0:400c:c08::22a as permitted sender) smtp.mailfrom=ville.voutilainen@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:28519 Archived-At: On 5 October 2016 at 13:38, Marc Mutz wrote: > In conjunction with auto deduction, the caller choosing the names means that > the code becomes brittle in the face of changes to the return type, e.g. when > reordering fields to fill padding holes. There have been discussions about that, especially about fields change their types. > > Structured Bindings would be acceptable if, like scripting languages, we > didn't have anything else to work with. > > But we do: We can return a struct. Structured bindings work with structs as well. If you think structured bindings mean you must return a tuple, you're mistaken. > I fear Structured Bindings will lead to an explosion of *really* bad API that > returns std::pair or std::tuple when it should return a small struct with C++ programmers are not idiots. -- 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. 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