Getting derived classes

[Andrei Alexandrescu]

dsimcha wrote:
> I know that, in std.traits, there's a template that spits out all base classes
> for a given class.  Based on reading the source, it seems to work based on a
> rather interesting use case for is expressions.  Is there any equivalent way
> to do the opposite:  For any given position in a class hierarchy, to get a
> tuple of all possible descendants?

That's not possible in general because in D the derived classes form an 
open set. I guess it could be done at runtime via reflection (not 
implemented afaik), but not at compile time.

Andrei