Use class template as a type

[dm via Digitalmars-d-learn]

On Monday, 28 November 2016 at 11:30:23 UTC, rikki cattermole 
wrote:
> In your case I'd just swap out ``MyClass[] someArray;`` to 
> ``Object[] someArray;``.
> But only because there are no members added without the extra 
> typing in MyClass.
>
> Remember types in meta-programming in D are not erased, they 
> exist in the assembly and are unique. Unlike Java who did the 
> implementation rather wrong.

I'm tried to use Object[], but got error
Error: no property 'value' for type 'object.Object'
I guess I must cast() to MyClassInt or MyClassFloat, but how can 
I do it?