> On Sep 2, 2017, at 2:35 PM, Sven Barth via fpc-pascal
> <fpc-pascal@lists.freepascal.org> wrote:
>
> Because you must use the interface and not the class instance:
>
> === code begin ===
>
> var
> base: TBaseClass;
> hook: IHook;
> begin
> base := TBaseClass.Create;
> hook := base;
>
> hook.DoIt; // will call base.hook.DoIt
> end;
>
> === code end ===
>
but then what is the purpose of this? It was almost a very powerful way to add
methods to a class without subclassing (like class helpers) but the simple fact
the “hook” identifier is not implied makes it useless. The only possible use of
this I could think of is not needing to type “hook.” every time but since you
need to anyways I just don’t get it.
Regards,
Ryan Joseph
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