From: Michael Winterstein <parzival@...>
Date: 2010-01-26T05:24:49+09:00
Subject: Is there a way to list the classes defined in a module?

Suppose I have a module that's essentially used as a namespace, like
this:

module Castle

class King < Royalty; end

class Queen < Royalty; end

class Guard < Commoner; end

class Dragon_keeper < Commoner; end

end


Is there some way I could later create a list, say Castle_dwellers that
would come out with all the classes defined therein?  I would expect an
array, something like [:King,:Queen,:Guard,:Dragon_keeper].  Or would I
have to add them 'manually' to the list?
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