Re: C++11 features, move semantics?

[Yann LEYDIER <yann leydier info>]

On 04/08/15 08:57, Markus Kolb wrote:
> Am 2015-08-03 18:33, schrieb Yann LEYDIER:
> > On 03/08/15 18:27, Markus Kolb wrote:
> > > Am 2015-08-03 14:43, schrieb Yann LEYDIER:
> > > > On 01/08/15 21:39, Murray Cumming wrote:
> > > > > I'm open to the idea, but I'd like to see some small example of how
> > > > > this might be used, please.
> > > >
> > > > The most immediate use of move semantics would be to be able to use
> > > > this:
> > > > std::vector<Gtk::Label> labels;
> > >
> > > Do you mean the class inheritance problem on object copy to base class?
> >
> > Errrrrrr I'm not sure I understand your question but in C++11 a
> > non-copyable class can now be used in vectors and other STL classes as
> > long as it is moveable.
>
> Ok. I haven't recognized that Label is not copyable.
> But it doesn't change that you loose information of derived classes,
> if you use the base class in the container, does it?
> A std::vector<Gtk::Label*> is possible when you have to put in
> derived objects, but a std::vector<Gtk::Label&> or std::vector<Gtk::Label>
> is not.

Yes, of course!

And Gtk::Label was just an example, since Murray asked for an example. ;o)