220 32501 article Path: news.gmane.org!.POSTED!not-for-mail From: Zhihao Yuan Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Re: Allow Structured Binding Outside of Variable Declaration Date: Tue, 16 May 2017 17:35:32 -0500 Lines: 73 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> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="94eb2c043012259c7a054fabcad2" X-Trace: blaine.gmane.org 1494974141 2305 195.159.176.226 (16 May 2017 22:35:41 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Tue, 16 May 2017 22:35:41 +0000 (UTC) To: "std-proposals@isocpp.org" Original-X-From: std-proposals+bncBCSKRWMD4EHBBN755XEAKGQEYOIXJDY@isocpp.org Wed May 17 00:35:34 2017 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pg0-f72.google.com ([74.125.83.72]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1dAl3y-0000IJ-Ss for gclcip-std-proposals@m.gmane.org; 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[184.173.153.196]) by mx.google.com with UTF8SMTPS id e34si166353qtb.220.2017.05.16.15.35.34 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Tue, 16 May 2017 15:35:34 -0700 (PDT) Received-SPF: pass (google.com: domain of bounce+3f9131.69110-std-proposals=isocpp.org@miator.net designates 184.173.153.196 as permitted sender) client-ip=184.173.153.196; Original-Sender: zy@miator.net X-Mailgun-Sending-Ip: 184.173.153.196 X-Mailgun-Sid: WyI3MTBkYiIsICJzdGQtcHJvcG9zYWxzQGlzb2NwcC5vcmciLCAiNjkxMTAiXQ== Original-Received: from mail-pg0-f42.google.com (mail-pg0-f42.google.com [74.125.83.42]) by mxa.mailgun.org with ESMTP id 591b7eb5.7fb86044c430-smtp-out-n02; Tue, 16 May 2017 22:35:33 -0000 (UTC) Original-Received: by mail-pg0-f42.google.com with SMTP id u187so82846077pgb.0 for ; Tue, 16 May 2017 15:35:33 -0700 (PDT) X-Received: by 10.98.95.193 with SMTP id t184mr311191pfb.191.1494974133014; Tue, 16 May 2017 15:35:33 -0700 (PDT) Original-Received: by 10.100.151.71 with HTTP; Tue, 16 May 2017 15:35:32 -0700 (PDT) In-Reply-To: X-Gmail-Original-Message-ID: X-Original-Sender: zy@miator.net X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@miator.net; spf=pass (google.com: domain of bounce+3f9131.69110-std-proposals=isocpp.org@miator.net designates 184.173.153.196 as permitted sender) smtp.mailfrom=bounce+3f9131.69110-std-proposals=isocpp.org@miator.net 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:32501 Archived-At: --94eb2c043012259c7a054fabcad2 Content-Type: text/plain; charset="UTF-8" On Tue, May 16, 2017 at 2:44 PM, Ville Voutilainen < ville.voutilainen@gmail.com> wrote: > > for (auto [x] : something) { > static_assert(is_same_v); // wtf is this > doing in the loop body? > } How about this for (TupleLike [x, y] : something) { ... } Where TupleLike is a concept. -- Zhihao Yuan, ID lichray The best way to predict the future is to invent it. _______________________________________________ -- 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. To view this discussion on the web visit https://groups.google.com/a/isocpp.org/d/msgid/std-proposals/CAGsORuBgzhCGGPYAWjSDg40xhGnV_ghcVTAvn3xaBFz52vs7xw%40mail.gmail.com. --94eb2c043012259c7a054fabcad2 Content-Type: text/html; charset="UTF-8" Content-Transfer-Encoding: quoted-printable

= On Tue, May 16, 2017 at 2:44 PM, Ville Voutilainen <ville.voutil= ainen@gmail.com> wrote:
for (auto [x] : something) {
=C2=A0 =C2=A0 static_assert(is_same_v<decltype(x), WhatIWant>); = // wtf is this
doing in the loop body?
}

How about this

=C2=A0 for (Tu= pleLike<A, B> [x, y] : something) { ... }

Where TupleLike is a concept.

--
Zhihao Yuan, ID lichray
The best way to predict the future= is to invent it.
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