[fpc-pascal] Type helper for array

[Vojtěch Čihák]

Hello,
 
I've got following declaration:
...
{$modeswitch typehelpers}
 
interface
 
uses
  Classes, SysUtils;
 
type
  TBuffer = array of Single;
 
  { TBufferHelper }
  TBufferHelper = type helper for TBuffer
    procedure Clear;
  end;
...
var aBuffer: TBuffer;
...
And I can do:
aBuffer[3]:=5;
aBuffer.Clear;
 
Is it possible to do this without helper? Since it's IMO silly to have helper in the same unit as the original declaration. Helpers are usually used where extending of the original type is not possible, aren't they?
 
Thanks,  V.