From: 7stud -- <bbxx789_05ss@...>
Date: 2011-03-16T11:02:31+09:00
Subject: Re: Include module Module ActiveSupport::CoreExtensions::Array::Grouping

Or, you can also do something like this:

module A
  module B
    module C

      def in_group
        puts 'in_group'
      end

    end
  end
end


include A::B::C
in_group

include() at the top-level causes the defs in the module to be included 
in the Object class, which means you can call in_group (without a 
receiver) from anywhere.

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