nested class inheritance

[Christophe Travert]

"Era Scarecrow" , dans le message (digitalmars.D:172269), a écrit :
> class Fruit {
>   int x;
>   class Seed {
>    void oneMoreToX() {
>     x++; //knows about Fruit.x, even if not instantiated
>    }
>   }
> 
>   static class Seed2 {
>    void oneMoreToX() {
> //  x++; //fails to compile, no knowledge of Fruit
>    }
>   }
> }
> 
> class Apple: Fruit {
>   class AppleSeed: Fruit.Seed { } //fails (no outer object 
> (Fruit.x) and makes no sense)
>   class AppleSeed2: Fruit.Seed2 { } //works fine
> }

AppleSeed does have a outer Fruit, and this Fruit happens to be an 
Apple. I don't see what is the issue, and what prevents the langage to 
support such AppleSeed. I'm not saying there is nothing that prevents 
the langage to support such pattern, I am not used to inner classes. 
Pleas enlighten me.