Ruby inheritance

class Base
  def m
    puts "Base::m"
  end
end

module MixinA
  def m
    puts "MixinA::m"
  end
end

module MixinB
  def m
    puts "MixinB::m"
  end
end

class Sub < Base
  include MixinA, MixinB
  def m
    super
    puts "Sub::m"
  end
end

Sub.new.m