Proposed improvements to the separate compilation model

[eles]

On Monday, 4 March 2013 at 06:18:35 UTC, Manu wrote:
> +1_000_000_000
>
> Yes please!
> It's near impossible to get a brief overview of a class at a 
> glance in D!

Exactly for this reason, what about make this way at least the 
recommended way, if not the single one?

What is to lose? As about what to win, basically each .d file 
will carry its .di file (class definition) inside it, and the 
latter can be easily extracted (both visually and automatically).

Just one note: please allow that the private variables of a class 
(those that are not exposed outside the file) be declarable 
outside the main definition of the class, that is with the . 
syntax. This will completely make declaration and implementation 
independent, to the point that the class definition is an 
interface and nothing else.