220 21334 article Path: news.gmane.org!not-for-mail From: Nicol Bolas Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: Conversion from lvalue to rvalue Date: Mon, 5 Oct 2015 18:24:58 -0700 (PDT) Lines: 90 Approved: news@gmane.org Message-ID: References: <31dedac5-7d51-402c-946e-0555c925f70d@isocpp.org> <116a66a2-90ea-4269-ac85-3432ff7094b0@isocpp.org> <42447957-4276-4f59-89b6-ab4be37c47c6@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/mixed; boundary="----=_Part_4252_1170265457.1444094698717" X-Trace: ger.gmane.org 1444094704 30150 80.91.229.3 (6 Oct 2015 01:25:04 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Tue, 6 Oct 2015 01:25:04 +0000 (UTC) To: ISO C++ Standard - Future Proposals Original-X-From: std-proposals+bncBCEKFTV6ZUMBB3OFZSYAKGQEX2PLSBA@isocpp.org Tue Oct 06 03:25:03 2015 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-io0-f197.google.com ([209.85.223.197]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1ZjH03-0006Bp-6c for gclcip-std-proposals@m.gmane.org; Tue, 06 Oct 2015 03:25:03 +0200 Original-Received: by ioii196 with SMTP id i196sf323248474ioi.3 for ; Mon, 05 Oct 2015 18:25:02 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20120113; h=date:from:to:message-id:in-reply-to:references:subject:mime-version :content-type:x-original-sender:reply-to:precedence:mailing-list :list-id:x-spam-checked-in-group:list-post:list-help:list-archive :list-subscribe:list-unsubscribe; bh=p/JMcmFCDdAyS57qYaF3g5U2MMwhCwU+EF31HsR5/Rs=; b=Yf3kLcgJp5hDD/RojfzUpQqxVOwe4IhtObpdqk06dFZa3fPRHq53adstWhMu6m8irw zyLPVnMlWPGEPIMgOTGI47RaCmCjpzgZvL6tnSFeneIw+daWKVyUM1eFbJfrZGzDR9WM tOX1nvwPr0FyutPrJ9aj1wAUNW8kWvDZcWuOS4MERAl3WW/pRgPSnk9NMmaEHp/vKUoF 2ZJk3W2LpO/4Bjliw3O97z9IvnSLd61Xk4OAPva4ZWbUC0kxihnJXMRFbTtAu543GCdg A/a+ACgvhZW6fI+6KwQ5c8sCTve2ohRtKNKwyvQ+PuMFLZx33i0gz9haqj7aPC8Sw0A3 a3ow== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:date:from:to:message-id:in-reply-to:references :subject:mime-version:content-type:x-original-sender:reply-to :precedence:mailing-list:list-id:x-spam-checked-in-group:list-post :list-help:list-archive:list-subscribe:list-unsubscribe; bh=p/JMcmFCDdAyS57qYaF3g5U2MMwhCwU+EF31HsR5/Rs=; b=eF40VuLg4/ISvFDSSXQXjTuj9QRyvhj5jxegNHgW1Cde+YpflsObccQiG+bDmI2BTy t3BkW32S0WUS5nUcpl+Ajp1Gvd1jLgzGgVo1GcpwYMldvJKDrtCPL/wOpNEIhjonhfg/ 54t9Y/qV/oQez20dxW+KY11wP2V2KcvhTaf4xvHcohKMkjHJI3x0rl85Of0EDgWeuhI0 rLfZOHRunBQBI2/yiVoTBssCuOiIPIQnN5YhyQFQNmSeufvrIAu+v0yQYO/s7jnmwTs4 6fqYiHwEPkVPW7H7bTvdAfue2Rsbc2y8lnxPt04zaky+grD3hQykwxgzfKONv9nZl/Zx gRFQ== X-Gm-Message-State: ALoCoQksbH7BgdY3m0vVVcpe+grt1FBZkD7KtEh/YPmSDSlsrusuOOZfkU3g4jI5M6PiJEgefqcu X-Received: by 10.50.225.102 with SMTP id rj6mr14972637igc.9.1444094702326; Mon, 05 Oct 2015 18:25:02 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.50.171.161 with SMTP id av1ls1426987igc.18.canary; Mon, 05 Oct 2015 18:25:00 -0700 (PDT) X-Received: by 10.50.111.138 with SMTP id ii10mr40302igb.0.1444094700873; Mon, 05 Oct 2015 18:25:00 -0700 (PDT) In-Reply-To: <42447957-4276-4f59-89b6-ab4be37c47c6@isocpp.org> X-Original-Sender: jmckesson@gmail.com Precedence: list Mailing-list: list std-proposals@isocpp.org; contact std-proposals+owners@isocpp.org List-ID: X-Spam-Checked-In-Group: std-proposals@isocpp.org 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:21334 Archived-At: ------=_Part_4252_1170265457.1444094698717 Content-Type: multipart/alternative; boundary="----=_Part_4253_826242280.1444094698717" ------=_Part_4253_826242280.1444094698717 Content-Type: text/plain; charset=UTF-8 On Monday, October 5, 2015 at 8:12:59 PM UTC-4, T. C. wrote: > > http://cplusplus.github.io/EWG/ewg-active.html#188 > > Although LWG might get to it first with decay_copy. > So long as the suggested `decay_copy` function works, I see no reason to make it a language feature. Presumably, it would be implemented like this: template auto decay_copy(const T &t) {return t;} -- --- 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. Visit this group at http://groups.google.com/a/isocpp.org/group/std-proposals/. ------=_Part_4253_826242280.1444094698717 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
On Monday, October 5, 2015 at 8:12:59 PM UTC-4, T. C. wrot= e:
http://cplusplus.github.= io/EWG/ewg-active.html#188

Although LWG might g= et to it first with decay_copy.

So long as= the suggested `decay_copy` function works, I see no reason to make it a la= nguage feature. Presumably, it would be implemented like this:

= template<typename T> auto decay_copy(const T &= amp;t) {return t;}




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