Is there a keyword to access the base class

[Stephen Jones]

> Hm... would be a nice idiom to implement generically in D.  
> Like a type switch.
>
> -Steve

That is what I would prefer, but I tried:

writeln(to!(typeof(bars[1]))(bars[1]).val);	

to see if I could access the "DERIVED" (thanks) class type but 
even though bars[1] is initialized as a new Foos its type is 
still marked as Bar. So the question is, how do you find the 
derived class type when presented with only the super class?