C#5 desiderata

[Marianne Gagnon]

> I think Walter said this can't be implemented :)
> The items alignment of function arguments used by D tuples is not fitting to return a struct. I have not understood the details of this thing, and in the end I don't care if returning a struct can decrease performance a bit...
> 

well, it could just be sugar ;) e.g. :

    (int, int) doFoo(int x, int y)

could perhaps automagically be re-written by the compiler as

    int doFoo(int x, int y, out int z)