class Module

  # A module may or may not have a name.
  #
  # module M; end
  # M.name # => "M"
  #
  # m = Module.new
  # m.name # => ""
  #
  # A module gets a name when it is first assigned to a constant. Either
  # via the +module+ or +class+ keyword or by an explicit assignment:
  #
  # m = Module.new # creates an anonymous module
  # M = m # => m gets a name here as a side-effect
  # m.name # => "M"
  #
  def anonymous?
    # The name of an anonymous class is an empty
    # string in 1.8, and nil in 1.9.
    name.nil? || name.empty?
  end

end