resolve a list of instances of all the derived classes of a base class

[erikash]

Hi,
I didn't see support for this behavior... is it possible? planned feature?

An example scenario:
When bootstrapping the application, resolve an instance of all the classes derived from startable and call their start method.

[davidals]

You could do something like this:

def all_subclasses(cls):
return cls.subclasses() + [g for s in cls.subclasses() for g in all_subclasses(s)]

startables=[object_graph.provide(s) for s in all_subclasses(Startable)]
for s in startables:
s.start()