Is it possible to inherit from a nested class from outside of the enclosing class? For example:

class A
{
     class B { int x; }
}

class C : B
{
     int get () { return x; }
}

Reply to llee,

> Is it possible to inherit from a nested class from outside of the
> enclosing class? For example:
> 
> class A
> {
> class B { int x; }
> }
> class C : B
> {
> int get () { return x; }
> }

no, sorry

that wouldn't work well anyway as the binding to A might get tricky

OTOH this would be really nice.

>class A
>{
>  class B { int x; }
>}
>
>class C : A
>{
>  class D : B
>  {
>    int get () { return x; }  }
>}

llee schrieb:
> Is it possible to inherit from a nested class from outside of the enclosing class? For example:
> 
> class A
> {
>      class B { int x; }
> }
> 
> class C : B
> {
>      int get () { return x; }
> }
> 
> 

It should work if B is a static class and you refer to it with A.B .

class A
{
     static class B { int x; }
}

class C : A.B
{
     int get () { return x; }
}

If the class is not static, it has an implicit "this" pointer of the surrounding class (like in Java), so you cannot create instances of non-static B, if there is no instance of A. static make B independent of this reference.