gistfile1.rb

module Kernel
  def find_const name
    name.split('::').inject(Array.new) do |bits, bit|
      bits.tap {|b|b << bit}.inject(self) {|o, e| p [o, e]; o.send :const_get, e }
      bits
    end
  end
end

class Foo
  class Bar
    class Gaz
      
    end
    
    p find_const('Foo::Bar::Gaz')
  end
  p find_const('Foo::Bar::Gaz')
end
p find_const('Foo::Bar::Gaz')