Re: [fpc-pascal] Is is impossible to extend a generic class in fpc 2..6.4?

[Sven Barth]

On 22.09.2014 05:32, Dennis Poon wrote:
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"

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
_______________________________________________
fpc-pascal maillist  -  fpc-pascal@lists.freepascal.org
http://lists.freepascal.org/cgi-bin/mailman/listinfo/fpc-pascal