On Friday, July 31, 2015 07:15:55 PM Mark Gaiser wrote: > On Fri, Jul 31, 2015 at 3:11 PM, Alex Merry <alex.me...@kde.org> wrote: > > On Thursday 30 July 2015 20:46:24 Mark Gaiser wrote: > > > On Thu, Jul 23, 2015 at 9:59 PM, Mark Gaiser <mark...@gmail.com> wrote: > > > > Hi, > > > > > > > > The wiki page doesn't state it explicitly [1]. > > > > > > > > The status of move semantics when searching for the status of N3053 on > > > > the > > > > > > compilers that frameworks support: > > > > GCC 4.6 [2] (frameworks requires 4.5) > > > > CLANG 3.0 [3] (frameworks requires 3.1) > > > > Visual Studio 2010/2012 [4] (it has some (most?) move semantics with > > > > N3053 > > > > > > being implemented in 2015. But has it enough till 2012 for normal move > > > > semantics? That i don't know.) > > > > > > > > Allowing this unconditionally (with the exception of *this since > > > > that's > > > > apparently fixed in GCC 4.8.1) seems possible since the compiler > > > > support > > > > > > seems there and the operation - when implemented - can give quite nice > > > > benefits. > > > > Our only language constraints are what is allowed by the compilers we > > support. > > > > I know that VS 2013 has most move semantics support except that the > > compiler > > can't generate default move constructors and move assignment operators. > > > > The VS 2010 compiler provides rvalue references, but not always as > > effeciently > > as you'd like (it doesn't properly account for temporary values, if I > > understand the explanation correctly). What I'm not certain about is the > > standard library support on this front, but I think it's basically absent > > from > > 2010 and mostly present in 2012. > > > > So when you say "move semantics", what does that encompass? You can use > > rvalue > > references in 2010 just fine, but someone would need to check that Qt > > detects > > that properly and provides appropriate overloads of various methods, and > > you > > may not get std::move (if you use qMove, it will degrade properly in > > std::move's absence, though). > > > > Alex > > _______________________________________________ > > Kde-frameworks-devel mailing list > > Kde-frameworks-devel@kde.org > > https://mail.kde.org/mailman/listinfo/kde-frameworks-devel > > Hi Alex, > > What i mean with "move semantics" are mainly the following features: > - std::move > - move copy constructor > - move assignment operator > > I know std::move is in vs2010, i'm just not so sure about the move copy and > assignment operator. Same for clang. I can't really find where clang > started to support these things.
For clang, check http://clang.llvm.org/cxx_status.html - RValue references got supported in 2.9. Cheers -- Milian Wolff m...@milianw.de http://milianw.de
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