Supertypes, subtypes, and more

[Tobias Pankrath via Digitalmars-d]

>     struct Foo
>     {
>         private SomeOtherStruct payload;
>         public alias payload this;
>
>         // ... other stuff ...
>     }
>
> ... the compiler won't accept it, because the private access to 
> payload clashes with public access via alias this.
>

Did you try using a method?

module1
---

struct Subtype {
private int x;
public int getX() { return x; }
alias getX this;
}
---

module2
---
import module1;
void main()
{
Subtype st = Subtype(2);
int x = st;
}
---

Works for me.