220 29503 article Path: news.gmane.org!.POSTED!not-for-mail From: Viacheslav Usov Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Proposal: implicit converstion of member function to temporary global function matching arg. and ret Date: Mon, 21 Nov 2016 14:12:33 +0100 Lines: 61 Approved: news@gmane.org Message-ID: References: <31cd1b1d-25cc-4114-aa86-daa771b529ad@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: blaine.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary=f403045ec286b6c8980541cf6859 X-Trace: blaine.gmane.org 1479734273 17279 195.159.176.226 (21 Nov 2016 13:17:53 GMT) X-Complaints-To: usenet@blaine.gmane.org NNTP-Posting-Date: Mon, 21 Nov 2016 13:17:53 +0000 (UTC) To: "ISO C++ Standard - Future Proposals" Original-X-From: std-proposals+bncBDU6VRPKW4BBB6PHZPAQKGQE5C3O4JA@isocpp.org Mon Nov 21 14:17:45 2016 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-wm0-f69.google.com ([74.125.82.69]) by blaine.gmane.org with esmtp (Exim 4.84_2) (envelope-from ) id 1c8oTg-00032m-1A for gclcip-std-proposals@m.gmane.org; Mon, 21 Nov 2016 14:17:44 +0100 Original-Received: by mail-wm0-f69.google.com with SMTP id g23sf39487324wme.4 for ; Mon, 21 Nov 2016 05:17:47 -0800 (PST) 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=02ZiWoZxeHX9MA23Fzy/0dgAzv70n3PuPxyKXms4f+8=; b=rdM9gZawJ7ojfY2nStDiPIw4l0JYBYibFcnhwunENgIsDp47D3qxLPT17isMrjdUlJ RXWNnxrFRaZkxaQI9VXckm6tjcA1U2id1nOmw+qxIbt18P3WCgiQZYrr1+HbqIDvW1n9 VPhrWu+cILTqJ+3EiVf15/Xs6DVZpGQfizpjRUv4+93tb/On6DOUei53jDkOUKakxGzc lSlx6YBgHJl6S8jrl2OvZocQd6SC+M/w2yS1XgxXdeUnScGIukAbtm90/1mNHZD+d/DY nm/A5Qe5vnZv0RVS7BNd9Iz4ZUJgRRoN/fCVyUnoDr3EInQP1xqwG4TUfe7V8e+mnSGi 9MAA== 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=02ZiWoZxeHX9MA23Fzy/0dgAzv70n3PuPxyKXms4f+8=; b=j9Puw+A/iIb586Yjll+xH8L2ZmF7U91KqhRgv66QRblTXzfHlYVsT5s9esXrqQR/9V RysZrfTaD/mhQRfieTIXyqiKWciePXVabV5a2xwgbnNX/Dv8T2FY78nlyF8+1c6ZN+jD PBh+xc4M9a/x8lgzjB0STIsTptayHdpv/Cc8+COR1zFTi7nWomXaoT5IV//5NPQyx+9V ARONBRF0o6GFzU9sxmSIg1Le2zyztP5i6bMqQfOfmw0lLqOtkezx++m0xjGkkJFOebUA 57Aj8v8PxAYA4YopaghmIrH+vYHRa5678GEVPsR9peZZUXTN5WNlj6fAOob3ciwpaSLL jDsw== X-Gm-Message-State: AKaTC02gq57eqL9Fkb/RtKHl27QoFQL6pDTx63sfEfaltOgS03qadhte5SHrzW8ABX1j3w== X-Received: by 10.46.69.135 with SMTP id s129mr2185464lja.1.1479734266623; Mon, 21 Nov 2016 05:17:46 -0800 (PST) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.28.209.129 with SMTP id i123ls1165668wmg.16.gmail; Mon, 21 Nov 2016 05:17:45 -0800 (PST) X-Received: by 10.194.0.229 with SMTP id 5mr11385032wjh.55.1479734264874; Mon, 21 Nov 2016 05:17:44 -0800 (PST) Original-Received: from mail-wm0-x22d.google.com (mail-wm0-x22d.google.com. [2a00:1450:400c:c09::22d]) by mx.google.com with ESMTPS id u13si20098288wjw.235.2016.11.21.05.17.44 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Mon, 21 Nov 2016 05:17:44 -0800 (PST) Received-SPF: pass (google.com: domain of via.usov@gmail.com designates 2a00:1450:400c:c09::22d as permitted sender) client-ip=2a00:1450:400c:c09::22d; Original-Received: by mail-wm0-x22d.google.com with SMTP id u144so21344515wmu.1 for ; Mon, 21 Nov 2016 05:17:44 -0800 (PST) X-Received: by 10.46.8.25 with SMTP id 25mr8150874lji.21.1479733954397; Mon, 21 Nov 2016 05:12:34 -0800 (PST) Original-Received: by 10.25.196.83 with HTTP; Mon, 21 Nov 2016 05:12:33 -0800 (PST) In-Reply-To: X-Original-Sender: via.usov@gmail.com X-Original-Authentication-Results: mx.google.com; dkim=pass header.i=@gmail.com; spf=pass (google.com: domain of via.usov@gmail.com designates 2a00:1450:400c:c09::22d as permitted sender) smtp.mailfrom=via.usov@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:29503 Archived-At: --f403045ec286b6c8980541cf6859 Content-Type: text/plain; charset=UTF-8 On Mon, Nov 21, 2016 at 1:09 PM, D. B. wrote: > I guess they didn't really mean "temporary", but rather compiler-generated. No, that cannot be compiler-generated. The generated function will have to have at least the current value of the this pointer embedded into it, at least in the situations when the compiler cannot optimise that away. So the functions will have to be generated (and destructed) at runtime, essentially making functions first-class objects, which, as I said, would be a pretty big change in the C++ philosophy. Cheers, V. -- 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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On M= on, Nov 21, 2016 at 1:09 PM, D. B. <db0451@gmail.com> wrote:<= /div>

> I= guess they didn't really mean "temporary", but rather compil= er-generated.

No, that cannot be compiler-generated. The generated function will = have to have at least the current value of the this pointer embedded into i= t, at least in the situations when the compiler cannot optimise that away. = So the functions will have to be generated (and destructed) at runtime, ess= entially making functions first-class objects, which, as I said, would be a= pretty big change in the C++ philosophy.
<= br>
Cheers,
V.

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