From -2387915453338050796 X-Google-Thread: f78e5,f1baa317914feeaf X-Google-Attributes: gidf78e5,domainid0,public,usenet X-Google-Language: ENGLISH,ASCII-7-bit Path: g2news2.google.com!news1.google.com!news.glorb.com!news2.glorb.com!news.alt.net!frodo.cs.rpi.edu!not-for-mail From: google@dalvander.com Newsgroups: comp.std.c++ Subject: Re: typeof keyword Date: Sun, 29 Mar 2009 15:51:24 CST Organization: http://groups.google.com Lines: 33 Sender: cppmods@cs.rpi.edu Approved: stephen.clamage@sun.com Message-ID: <04297129-6b1b-479e-ab60-44eb7d288725@v38g2000yqb.googlegroups.com> References: <488de3d4-77ac-4c01-8130-d196dec70bc8@v15g2000yqn.googlegroups.com> <4c6295e4-2e8d-44e3-85cd-7e9eb9e72ce0@p11g2000yqe.googlegroups.com> NNTP-Posting-Host: netlab.cs.rpi.edu Content-Type: text/plain; charset=ISO-8859-1 To: (Usenet) Return-Path: X-Original-Date: Sun, 29 Mar 2009 02:18:24 -0700 (PDT) X-Submission-Address: std-c++@netlab.cs.rpi.edu Xref: g2news2.google.com comp.std.c++:367 On Mar 27, 11:40 pm, Giovanni Deretta wrote: > auto x = /expression/; > > will be equivalent to: > > remove_reference::type x = /expression/; Are you sure? Let's say I have a class which is heavy to copy assign and copy construct: HeavyObject. And a function which returns a HeavyObject by const-reference: const HeavyObject& getHeavy(int howHeavy); And then do the following: auto heavy = getHeavy(42); The copy constructor will be called? Do I need to use the following to prevent the copy constructor to be called? const auto& heavy = getHeavy(42); Regards, Anders Dalvander -- [ comp.std.c++ is moderated. To submit articles, try just posting with ] [ your news-reader. If that fails, use mailto:std-c++@netlab.cs.rpi.edu] [ --- Please see the FAQ before posting. --- ] [ FAQ: http://www.comeaucomputing.com/csc/faq.html ]