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mikebaldry/gist:1366593

Created November 15, 2011 09:49
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find subclasses
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gistfile1.rb
def self.all
results = []
ObjectSpace.each_object(Class) do |c|
(results << c) if c.ancestors.include?(PullSource) && c != PullSource
end
results
end
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ruby-1.9.2-p290 :017 > PhPullSource.ancestors
=> [PhPullSource, PullSource, Object, ActiveSupport::Dependencies::Loadable, PP::ObjectMixin, Mongoid::Extensions::Object::Yoda, Mongoid::Extensions::Object::Substitutable, Mongoid::Extensions::Object::Reflections, Mongoid::Extensions::Object::Checks, JSON::Ext::Generator::GeneratorMethods::Object, Kernel, BasicObject]

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