> As it stands typecasting in Delphi is good _in that_ it forces explicit
> documentation of the types on a list.

And it is bad in the respect that it is unchecked

> Yes, but a subclass of a TClass is a TClass  : if I can add a
> subclass to a Set of TClass then isn't equivalent to what we have now?
> ie does a Set of TCustomEditBox exclude a TEditBox?

It probably was't clear but like a Collection this Set would construct it's
own items
so it would a a homogenous set of TClass

for a Heterogenous List use TList

TTFN
Neven


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