220 11758 <51c85996-7660-4123-8a27-8c081deeb3a7@isocpp.org> article Path: news.gmane.org!not-for-mail From: tomaszkam@gmail.com Newsgroups: gmane.comp.lang.c++.isocpp.proposals Subject: Re: N4078: Rvalue reference overloads for value() method returns object by value Date: Wed, 9 Jul 2014 13:24:10 -0700 (PDT) Lines: 78 Approved: news@gmane.org Message-ID: <51c85996-7660-4123-8a27-8c081deeb3a7@isocpp.org> References: <2555993.7LIlHKVULI@tjmaciei-mobl4> <6c7ffd99-5dc4-41c6-b9b5-8c04a3248974@isocpp.org> Reply-To: std-proposals@isocpp.org NNTP-Posting-Host: plane.gmane.org Mime-Version: 1.0 Content-Type: multipart/alternative; boundary="----=_Part_486_351318.1404937450926" X-Trace: ger.gmane.org 1404937459 6516 80.91.229.3 (9 Jul 2014 20:24:19 GMT) X-Complaints-To: usenet@ger.gmane.org NNTP-Posting-Date: Wed, 9 Jul 2014 20:24:19 +0000 (UTC) To: std-proposals@isocpp.org Original-X-From: std-proposals+bncBDNPVXXG6IGBB26J62OQKGQEWN2OLJI@isocpp.org Wed Jul 09 22:24:14 2014 Return-path: Envelope-to: gclcip-std-proposals@m.gmane.org Original-Received: from mail-pa0-f71.google.com ([209.85.220.71]) by plane.gmane.org with esmtp (Exim 4.69) (envelope-from ) id 1X4yPV-0004Yd-Iq for gclcip-std-proposals@m.gmane.org; Wed, 09 Jul 2014 22:24:13 +0200 Original-Received: by mail-pa0-f71.google.com with SMTP id eu11sf53767105pac.10 for ; Wed, 09 Jul 2014 13:24:12 -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 :x-original-sender:reply-to:precedence:mailing-list:list-id :list-post:list-help:list-archive:list-subscribe:list-unsubscribe :content-type; bh=Z6yriIn5ztsisjrdtrQkapnWSkOMxGI/N5qdE+b4i7A=; b=mPxDeELtXAz5hQCZOClro6hUILA4beWs4JvI0ESIVMzFO1oJG0pj0guDtUwgElIWn2 hB004t6gxIf8FXilvPyvW3tuiQH5WrD0W2dGmFxjr9RX3JVCFcKRZez5v4qqNatRNDiS glyqo83Er5XoojZEP/Evpw/ZBKKfYF3hftNU8K8HbNgWkrTEFoHfFvp+8xTMd3V/x01y LX0vjGl7Q8JBVAlAGvuX7mFgJI0D2GGNx7Hw6oc0JjQO5jW8LjaDKEYKsr24ZQjOl5Z7 3WwMA4FNXWyVfXpn/I8apz1/OC2wwchCgO1hK1qsLqFAaPEXcALYr+hRosnEJNY++AN1 7XzA== 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:x-original-sender:reply-to:precedence :mailing-list:list-id:list-post:list-help:list-archive :list-subscribe:list-unsubscribe:content-type; bh=Z6yriIn5ztsisjrdtrQkapnWSkOMxGI/N5qdE+b4i7A=; b=bwXOH3doVna9SNRF3giEi3EAyKjkYWlRGEakq4xL64c0Ee+N/3aWQk8K3pGNuSdBVU 1gn567hRqSvU4yX4aI3haQVQxHmfhXEjgvGWCfc/pvtGudySFwJIMbZyXZJTZyCFeElY ELVnSOaKv4TcanGtMC0EtULKd1uip7WNP0H/x0R1dzVMhxZZTXZOscWMhSuDJtyJaLtp QrWZg4t1N9g1ONkEobVorckHGGIW/P92RKdSWa9xskTGMCZkLljLE7CTeyzUlkslI/bD 5PxnERn1Ov4JZ427iZU8BmyrYo4XbWbII8PXnNDuIwd9th4xAsCIw6BzUKxZ4NvUyo5w +23A== X-Gm-Message-State: ALoCoQmMeN+5BuFBw+UOL2aYIPktX1BjYOuBwFTbFcA3z2sR1zxPQH5G1YeBmBRNsvOOgTZu3xvF X-Received: by 10.66.122.101 with SMTP id lr5mr21210002pab.19.1404937452426; Wed, 09 Jul 2014 13:24:12 -0700 (PDT) X-BeenThere: std-proposals@isocpp.org Original-Received: by 10.182.113.195 with SMTP id ja3ls1411259obb.5.gmail; Wed, 09 Jul 2014 13:24:11 -0700 (PDT) X-Received: by 10.182.40.233 with SMTP id a9mr27572obl.36.1404937451538; Wed, 09 Jul 2014 13:24:11 -0700 (PDT) In-Reply-To: <6c7ffd99-5dc4-41c6-b9b5-8c04a3248974@isocpp.org> X-Original-Sender: tomaszkam@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:11758 Archived-At: ------=_Part_486_351318.1404937450926 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: quoted-printable W dniu =C5=9Broda, 9 lipca 2014 22:13:17 UTC+2 u=C5=BCytkownik toma...@gmai= l.com=20 napisa=C5=82: > > Actually every code that looks loke > { > auto&& cs =3D f(); > /* do something */ > } > > May be changed to: > template > void helper(T&& t) > { > /* do something */ > } > helper(f()); > > Or even: > [&](auto&& cs) { > /* do something */ > } (f()); > > Using the SCOPE_GUARD trick, even the following pseudo-statement syntax= =20 would be possible: LET(cs, f()) { /* do something */ } See: http://goo.gl/lTUSj7 --=20 ---=20 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 e= mail 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-proposa= ls/. ------=_Part_486_351318.1404937450926 Content-Type: text/html; charset=UTF-8 Content-Transfer-Encoding: quoted-printable
W dniu =C5=9Broda, 9 lipca 2014 22:13:17 UTC+2 u=C5=BCytko= wnik toma...@gmail.com napisa=C5=82:
Actually every code that looks loke
{
  a= uto&& cs =3D f();
  /* do something */
}

May be c= hanged to:
template<typename T>
void helper(T&& t)
{=
    /* do something */
}
helper(f());

Or even:[&](auto&& cs) {
    /* do something */
} (f(= ));

 Using the SCOPE_GUARD trick, even = the following pseudo-statement syntax would be possible:
LET(cs, f()) { = /* do something */ }
See: http://goo.gl/lTUSj7

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