Aquivalent References as in C++?

[Namespace]

> > Best of all solutions would be that a
> > special keyword, for example scope, ensure that lvalues would
> except but
> > _no_ null-references.
>
> Yes, the keyword would be a little shorter than the assert() or 
> enforce() above but D already has very many keywords. :)

Yes, but scope is an unused storage keyword, isn't it?
So it could be an idea to avoid speed losses with the current 
method and ensure that the object is not null, if it's 
intentional.