[fpc-pascal] Is is impossible to extend a generic class in fpc 2..6.4?
pascaldragon at googlemail.com
Mon Sep 22 07:47:22 CEST 2014
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 )
> 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> )
> but I got Error: Identifier not found "generic"
The correct syntax would be:
=== code begin ===
generic TMyMap<TKey, TData> = class(specialize TFPGMap<TKey, TData>)
=== 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
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