From: Pit Capitain <pit@...>
Date: 2006-08-14T08:14:28+09:00
Subject: Re: Automatic instantiation of subclasses

Sorry for answering late, I've been away for a week.

Kilivor Kante schrieb:
> First sorry I am a beginner ;-( What I want to do is: automatically 
> instantiate subclasses of a given class, say, A.
> 
>   class A
>   end
> 
>   class A1 < A
>   end
> 
>   class A2 <A
>   end
> 
> So I want to know the names of A subclasses: A1 and A2. Then instantiate 
> via reflection. Is it possible?
> 
> Using ObjectSpace it is possible to know all the instantiated objects of 
> a class. But here no objects yet.

In Ruby, classes are first-class objects ;-)

   ObjectSpace.each_object( class << A; self; end ) do |c|
     p c
   end

Regards,
Pit