220 34442 article Path: news.gmane.org!.POSTED!not-for-mail From: Ville Voutilainen Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Copy eliding emplacement functions for containers. 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[209.85.220.65]) by mx.google.com with SMTPS id v188sor969629oib.254.2017.09.20.10.05.15 for (Google Transport Security); Wed, 20 Sep 2017 10:05:15 -0700 (PDT) Received-SPF: pass (google.com: domain of ville.voutilainen@gmail.com designates 209.85.220.65 as permitted sender) client-ip=209.85.220.65; X-Received: by 10.202.67.6 with SMTP id q6mr1680847oia.201.1505927115331; Wed, 20 Sep 2017 10:05:15 -0700 (PDT) Original-Received: by 10.157.2.132 with HTTP; Wed, 20 Sep 2017 10:05:14 -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 header.s=20161025 header.b=N3/dzpu3; spf=pass (google.com: domain of ville.voutilainen@gmail.com designates 209.85.220.65 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:34442 Archived-At: On 20 September 2017 at 20:00, Ray Hamel wrote: > On Wednesday, September 20, 2017 at 12:32:56 PM UTC-4, Ville Voutilainen > wrote: >> >> On 20 September 2017 at 19:29, Ray Hamel wrote: >> > Wouldn't it be far simpler just to add a method >> > relevant_stl_collections::copy_back(T value)? >> >> >> What is this copy_back function supposed to do when T is neither >> copyable nor movable? > > > It constructs it in-place if it's an rvalue (copy/move elision) or fails to > compile if it's an lvalue, which is the desirable behavior. Please show me a version where swizzle actually stores an element into a container. -- 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/CAFk2RUZYHP0Hy3k48dFm2bTr3n2O3fmE3uUFii3uL2kSPJnOaQ%40mail.gmail.com. .