DIP66 v1.1 (Multiple) alias this.

[Daniel Nielsen via Digitalmars-d]

On Wednesday, 24 December 2014 at 06:17:28 UTC, Andrei 
Alexandrescu wrote:
> In fact a better thought: as soon as D is defined, repeated 
> subtyping should be detected as an error. Then there's no 
> question about "is" in the first place :o).
>
>
> Andrei

Agreed. How about using "override alias this" when 
disambiguating, in order to make it more explicit?

struct C
{
   alias a this;
   alias b this;
   override alias b.i this; // override inherited alias int this.
   A a;
   B b;
}