gistfile1.rb

module SomeNamespace::SomeModule

  # how do I get this method mixed into the class below?
  def some_module_method(x, y, z)
  end
end

class SomeNamespace::SomeClass
   #  include SomeNamespace::SomeModule
   # update: it seems like instead of "include", I should use "extend"...
  extend SomeNamespace::SomeModule

  def self.some_class_method

    some_module_method(1, 2, 3)
  end
end

module SomeModule

  # how do I get this method mixed into the class below?
  def some_module_method(x, y, z)
     p "called"
  end
end

class SomeClass
  extend SomeModule

  def self.some_class_method
    some_module_method(1, 2, 3)
  end
end

SomeClass.some_class_method  #=> "called"