220 29154 article Path: news.gmane.org!.POSTED!not-for-mail From: Ville Voutilainen Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Initializer list for move-only types Date: Thu, 27 Oct 2016 10:16:05 +0300 Lines: 35 Approved: news@gmane.org Message-ID: References: <34f09dd5-e231-4a0b-a218-48c8eabe73c5@isocpp.org> <6030c88d-626c-4cf9-a0e6-963ae3fbe708@isocpp.org> 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 1477552582 13207 195.159.176.226 (27 Oct 2016 07:16:22 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Thu, 27 Oct 2016 07:16:22 +0000 (UTC) To: "ISO C++ Standard - Future Proposals" Original-X-From: std-proposals+bncBC5JHI7A7ALRBNWTY3AAKGQEUE5LFHY@isocpp.org Thu Oct 27 09:16:17 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-qt0-f199.google.com ([209.85.216.199]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1bzeuy-0001IB-HJ for gclcip-std-proposals@m.gmane.org; Thu, 27 Oct 2016 09:16:04 +0200 Original-Received: by mail-qt0-f199.google.com with SMTP id g32sf16298490qta.2 for ; Thu, 27 Oct 2016 00:16:07 -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 :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=g/vNLI0tap38Q2J2yNvsXjQTLH/lmIVndiu/g6UR0Vc=; b=wkGlEEaVnPcQ4BrFmI57VakwkptS0Z47Iglin1MrjLI6AvWw5RbK38W1QEROEKLbU3 Hm6R4NM7TvZ6pPmtYzvKTtbszRxMwS/QlIO5jCU+7yd4/oLPI1QMRYit466BSQBl2vQh 3T8qs++DRTcpuYHwK+jPr8+HJHAhqcQplREIKW6Ls7e8de8xzCIkdE0DJMIETIYV8vEi Tr6AWr/qL4BlCVrG3YJ0vOpxByR/YSHU3WLCPO07rMyfD7iw2o3xdNf+iJ61RhPcSLfG ZVe/1UzTI72jpWJUWHhibQw07l0/4SLlrafSCpmhIPlzyv7opPySf9wVjBA7d5FbesCm xt0g== 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: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=g/vNLI0tap38Q2J2yNvsXjQTLH/lmIVndiu/g6UR0Vc=; b=P4YY1XTt8Uchuwm8PlSPc3XHe4PryRtMcSjRzOR7u/CztU/dLajb3jR1DsTOd75BTk Es9IhoGANUIvpaOqJd5a4uvCJ68QXI8MjoD0G1SqsQv0RZM3M39JPZgrpweFCrJ/iy1Z jnNPxs3mAz1b8G5v0NXTSMQcWk+5ACgyeDJQWVT4e77kXm/z52VCIG47I2pgjJOZMt21 8W0h378HqFutS/Pji5MP3k+XOB3SkGIRUY5Wx68dCfdOGsVBpMraaXddWDdjU/I1Gj9S A8jtzHPM10E/xsFbNESfQtyHJ1ToNFzJo/KtbCkFvCf49dMVF6xRCQDQR93EkzHZBvnb ZgxQ== X-Gm-Message-State: ABUngvewQOVklPgA8Z4m3S5OKw1wUpbW/aENiAS9joUvl2AlQm3ZbJp56S7EiQtCH3R++w== X-Received: by 10.200.52.23 with SMTP id u23mr1844801qtb.80.1477552566915; Thu, 27 Oct 2016 00:16:06 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.157.15.174 with SMTP id d43ls3303594otd.11.gmail; Thu, 27 Oct 2016 00:16:06 -0700 (PDT) X-Received: by 10.129.103.86 with SMTP id b83mr6166149ywc.217.1477552566150; Thu, 27 Oct 2016 00:16:06 -0700 (PDT) Original-Received: from mail-yw0-x230.google.com (mail-yw0-x230.google.com. [2607:f8b0:4002:c05::230]) by mx.google.com with ESMTPS id e129si2154409ywd.209.2016.10.27.00.16.06 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 27 Oct 2016 00:16:06 -0700 (PDT) Received-SPF: pass (google.com: domain of ville.voutilainen@gmail.com designates 2607:f8b0:4002:c05::230 as permitted sender) client-ip=2607:f8b0:4002:c05::230; Original-Received: by mail-yw0-x230.google.com with SMTP id h14so33885560ywa.2 for ; Thu, 27 Oct 2016 00:16:06 -0700 (PDT) X-Received: by 10.36.127.10 with SMTP id r10mr5028317itc.14.1477552565771; Thu, 27 Oct 2016 00:16:05 -0700 (PDT) Original-Received: by 10.36.28.200 with HTTP; Thu, 27 Oct 2016 00:16:05 -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:f8b0:4002:c05::230 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:29154 Archived-At: On 27 October 2016 at 10:07, 'Johannes Schaub' via ISO C++ Standard - Future Proposals wrote: >> Neither. I'm referring to filling the functionality gap without >> changing the meaning >> of existing code, so that >> >> vector> vec{make_unique(42), make_unique(666)}; >> >> works but there's no change to any currently valid cases. >> > > I don't see the utility of changing the meaning of deduction yet. I think in > the deducing cases, we could stay with const shallow initializer list (if > only for backward compatibility). > > However outside of those two examples, what are cases that change meaning, > and what were the cases that caused evolution to reject the paper? It > appears to me that even David himself doesn't know about them yet (?) I don't necessarily know of cases outside those two examples, because those two examples are what changes meaning. The paper provides a similar example, auto ls = { std::string( "hello" ) }; // ls has type std::own_initializer_list< std::string > and also std::vector< std::string > vs = { "yizzo" }; // OK: move from sequence -- 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/CAFk2RUZ10e%2B3_PG%2ByiHrOj1NxuC4W_sd5ia5tR2H43cJtA5hxQ%40mail.gmail.com. .