Function definition in multiple modules

[Martin Drasar]

On 29.3.2012 12:02, simendsjo wrote:
> Your looking for partial classes? D doesn't have this as far as I know.
> 
> "alias this" should work for more than one value in the future, and then
> (I think) you should be able to do something like this:
> 
> class XIB : IB {}
> class XIA : IA {}
> class X : IA, IB {
>   XIA xia;
>   XIB xib;
>   alias xia this;
>   alias xib this;
> }

I was thinking about similar idea. But instead of alias this I intended
to write something like this:

class X : IA, IB {
  XIA xia;

  void iamethod()
  {
    xia.iamethod();
  }
  ...
}

It is not very pretty though...

> But you can also solve it with mixin templates:
> mixin template XIA {
>   // all IA methods
> }
> mixin template XIB {
>   // all IB methods
> }
> 
> class X : IA, IB {
>   mixin XIA!();
>   mixin XIB!();
> }

This would make the code separation easy to manage, but I am concerned
about debugging. How is e.g. gdb able to debug mixins? I think I have
read somewhere in the D or D-learn, that the dmd can produce the file
with mixed-in code for the debugger, but I am not sure how to find it.

Martin