Feature request: Make object composition easier

[TommiT]

On Monday, 25 March 2013 at 18:15:21 UTC, TommiT wrote:
> (++bar).fun();
>
> ... which would be lowered to:
>
> (*cast(Bar*) ((cast(byte*) &++bar) + 
> Bar.init._foo.offsetof)).fun();

Sorry, meant to say:

(*cast(Bar*) ((cast(byte*) &++bar) - 
Bar.init._foo.offsetof)).fun();