gistfile1.txt

# main module

require 'foo/bar'

module Foo
  include Foo::Bar

  EventMachine.run do
      dothis  # instead of Foo::Bar.dothis
  end


....

# foo/bar.rb

module Foo::Bar
  class << self
    def dothis
       ...


# error when I ran foo.rb

undefined method `dothis' for Foo:Module (NoMethodError)