From: Jorge Lodos (lodos_at_[hidden])
Date: 2006-04-24 18:31:14
Alexander Nasonov wrote:
>
> Jorge Lodos wrote:
> > Hi
> > The following is a partial solution for boost::any operations,
> > including operator==.
> > [ skiped ]
> > This is different from any_cast in that it returns a reference,
> > instead of a copy. Note also that this will never be used
> implicitely,
> > you have to call operator ValueType&() explicitely.
>
> any_cast already supports reference types.
>
Sure, but it returns a copy of the holded object. The described operator
returns a reference to the holded object.
> There is another way of doing this:
>
> typedef mpl::vector< less<typeof(_1 == _2)>
> , plus<typeof(_1 + _2)>
> > ops;
> any<ops> a = 0;
> any<ops> b = a + a;
>
> assert( b == a );
>
> I have a partial solution but I want better multimethods.
>
Nice, thanks for sharing.
Cheers
Jorge