定数探索もそれっぽく動いてる #mruby

t.rb

class A
  X = "A::X"
  Y = "A::Y"
  Z = "A::Z"
end

module B
  Y = "B::Y"

  class C < A
    Z = "C::Z"

    def show_constants
      p X
      p Y
      p Z
    end
  end
end

c = B::C.new
c.show_constants