Is it impossible to extend a generic class?
I tried to extend a generic class "TFPGMap" in fpl unit.

its original definition is:
generic TFPGMap<TKey, TData> = class(TFPSMap)

I want to extend it by:
generic TMyMap<TKey, TData>=class(TFPGMap )

   end;

I got this error: Generics without specialization cannot be used as a type for a variable

Then I tried:
generic TMyMap<TKey, TData>=class(generic TFPGMap<TKey, TData> )

   end;

but I got Error: Identifier not found "generic"

I know it was not possible in the past. Just want to know whether it is still not possible in fpc 2.6.4.

Thanks.

Dennis

The correct syntax would be:

=== code begin ===

type
   generic TMyMap<TKey, TData> = class(specialize TFPGMap<TKey, TData>)
   end;

=== code end ===

I know it was not possible in the past. Just want to know whether it is still not possible in fpc 2.6.4.

2.6.4 has received *no* fixes related to generics compared to 2.6.0 or 2.6.2.

Regards,
Sven

Sven Barth wrote

generic TMyMap<TKey, TData> = class(specialize TFPGMap<TKey, TData>) end;

Thanks a lot for your help.

Dennis