From: "Sony S." <sony.fermino@...>
Date: 2011-03-23T22:00:58+09:00
Subject: Re: Class Variables in EigenClass

Jean-Pascal Billaud wrote in post #985843:
> Any idea?
>
> Thanks,

You can use class_variable_set:

def eigen
  class << self
    self
  end
end

class A
end

class B
end

egA = A.send :eigen
puts egA.object_id

class A
  @@in_A = 'A'
end

egA.send(:class_variable_set, :@@in_egA, 'egA')    # The secret!

puts "A Class Variables"
puts A.class_variables        #=> @@in_A

puts "egA Class Variables"
puts egA.class_variables      #=> @@in_egA

puts "B Class Variables"
puts B.class_variables        #=> empty

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