new DIP47: Outlining member functions of aggregates

[Walter Bright]

On 9/8/2013 5:03 PM, Andrei Alexandrescu wrote:
> D's module system has always favored a file-granular approach, e.g. private
> stuff is module-private. This notion of spilling private access outside the file
> into methods defined in various other files works against that nice tenet.
>
> So it looks there's no obvious and obviously good solution. Probably the first
> one is more sensible.

One solution that has been proposed here (by Manu and perhaps others) is that 
the outlined functions can only appear inside the same module that the 
declaration is in.

This would resolve the private access problem and the modularity problem.