Delphi property getter function using generics

Question

It would be nice to have generic property getters/setters to perform a common task on each access.

That code gives a compile-time error in Delphi XE2 'E2008 Incompatible types'. A similar code gave an internal error during compilation, but never compiles. Do I make a mistake or it is a compiler limitation?

type TFoo = class
private
  function Get<T>: T;
public
  property Bar: Integer read Get<Integer>;
end;

function TFoo.Get<T>: T;
begin
  Result := 0;
end;

Answer 1

The following things can be generic in the Delphi language:

• classes, e.g. TFooClass<T> = class
• records, e.g. TFooRecord<T> = record
• interfaces, e.g. TFooInterface<T> = interface
• procedural types, e.g. TFooProc<T> = procedure
• methods, e.g. procedure FooMethod<T>()

Properties cannot be generic themselves, and cannot be implemented using generic getter or setter methods.