Can we just have struct inheritence already?

[Ola Fosheim Grøstad]

On Saturday, 22 June 2019 at 06:29:43 UTC, Ola Fosheim Grøstad 
wrote:
> Then you need som way of overloading a function that calls a 
> specific attribute of  a struct. So you need overloading on 
> attributes, not only overloading on types, yet you also need a 
> reference to the parent struct.
>
> So you need to be able to do something like
>
> int length(SubStruct.attributename* this) {
>     this.parent
> }

In other words, you need static virtual methods. Perhaps a better 
syntax would be something along the lines of:

struct SubClass {
   int _length;

   inherit  SuperClass1 {
      int length(){   this.super.length() + this.parent._length}
   }  attribute1;

   inherit SuperClass2 {
      int length(){   this.super.length() - this.parent._length}
   } attribute2;
}


It is difficult to find a syntax that isn't confusing. Probably 
better to do it with interfaces.