DIP61: redone to do extern(C++,N) syntax

[Steven Schveighoffer via Digitalmars-d]

On Mon, 28 Apr 2014 11:09:38 -0400, Byron <byron.heads at gmail.com> wrote:

> I am confused now, cross module renaming??
>
> I was thinking this:
>
> a.d
> extern(C++, std) {  ... class string ... }

class string now has two fully-qualified names. a.string, and std.string  
(assuming the current DIP is implemented).

> b.d
> import std.string;
> import cpp = a; // a must be accessed via cpp

This renames the a *module*, but not the C++ namespace. The C++ namespace  
is entirely separate from D's module imports.

So now, a's string has two names, cpp.string and std.string (still).

> std.string.... /// okay D version

Error. Refers both to the std.string module, and the string class within  
the std C++ namespace.

> cpp.std.string ... /// okay c++ version

I don't think this would work either. This is a mix of D modules, and C++  
namespaces. The DIP does not mention this possibility.

> string ... /// Okay D version

I think this may work.

> cpp.string /// Okay C++ version

Yes.

-Steve