Re: Function definition in multiple modules

[simendsjo]

On Thu, 29 Mar 2012 11:31:57 +0200, Martin Drasar <dra...@ics.muni.cz>  
wrote:

On 29.3.2012 11:16, simendsjo wrote:

D has interface files, .di. These can be automatically generated by the
compiler using the -H switch.

(snip)

I would like to split the X class definition into two files. One file
would implement methods of interface IA and another of interface IB. So
it would be like this:

myfunkyclassIA.d:
class X : IA, IB
{
  void a()
  {
  }
}

myfunkyclassIB.d:
void b(X x)
{
}

Except using UFCS in this case does not work...

Martin

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;
}

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!();
}