struct inheritance

[Robert Fraser]

Bill Baxter Wrote:

> Let us all turn our copies of WalterAndrei.pdf to page 40 where yea 
> verily it doth say:
> 
>      struct M { int a; }
>      struct S {
>         M m;
>         alias m this;
>         int b;
>      }
> 
> Why not just allow mixin to do this?
> 
>      struct M { int a; }
>      struct S {
>         mixin M;
>         int b;
>      }
> 
> That's basically the way it's done now except now it would be more like:
> template MMixin() { int a; }
> struct M { mixin M; }
> struct S { mixin M; int b; }
> 
> Just let us treat a struct like a zero arg template for mixin purposes.
> 
> --bb

It amounts to the same thing, so it just depends on which syntax you prefer. Personally, I like...

struct S : M { int b; }

... meaning S is non-polymorphically inherited from M. I guess the argument against taht syntax was that it would be confusing for people from a C++ background who assume polymorphic inheritance for structs.

Anyways, it's up to Walter to decide on the syntax, and he says "alias this".