Le samedi 27 février 2010 06:56:08, Vincent Torri a écrit :
> On Sat, 27 Feb 2010, Peter Wehrfritz wrote:
> > Gustavo Sverzut Barbieri wrote:
> >> On Fri, Feb 26, 2010 at 6:33 PM, Peter Wehrfritz <peter.wehrfr...@web.de>
wrote:
> >>> Gustavo Sverzut Barbieri wrote:
> >>>> On Fri, Feb 26, 2010 at 10:44 AM, Lucas De Marchi
> >>>>
> >>>> <lucas.demar...@profusion.mobi> wrote:
> >>>>> C++ needs casts in order to assign a void* to another pointer type.
> >>>>> As typeof operator is a gcc extension, we define EINA_TYPEOF(x) as
> >>>>> "typeof" on gcc with c++ source and as nothing otherwise.
> >>>>
> >>>> Lucas, as I told you, I'd rather use the following patch, but it would
> >>>> not help other C++ compilers, so not a real solution.
> >>>
> >>> What about this:
> >>>
> >>> template <typename T>
> >>> inline T *cast_to(T *, void *p)
> >>> {
> >>> return (T *)p;
> >>> }
> >>>
> >>> ...
> >>> data = cast_to(data, l);
> >>>
> >>> I haven't used c++ since a while, but I think this should be portable.
> >>
> >> They have the fancy templates dynamic_cast<type>(ptr) and
> >> static_cast<type>(ptr)
> >
> > Yes, I know. But I wasn't sure which one to chose, so I took a normal C
> > cast as the OP did.
>
> static_cast is better that dynamic_cast in that case (imho)
Yes, static_cast is the most common cast operator and replaces the C-style
casts. dynamic_cast will not work as it checks dynamically for the hierarchy
class of both pointers. You should only use that with with polymorphic
classes.
> Vincent
>
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--
------------------------
Raoul Hecky
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