Is it possible to store different generic types in ex. an

[Is it possible to store different generic types? via Digitalmars-d-learn]

Is it possible to store different generic types in ex. somekind 
of container such as an array, hashtable etc.

Let's say we got

class Foo(T) {
     ...
}

Would it be possible to store something like

Foo[] foos; // Where Foo of course should allow any generic 
version of Foo

Ex.

Foo!int and Foo!string should both be able to be stored inside 
the array.

If so how would one construct an array like that or is there some 
other container that may be able to do it?