constantly_funny.rb

module A
  X = 1
end
module A
  class B
    def self.x
      X
    end
  end
end
class A::B
  def self.y
    X
  end
end
c = A::B
def c.z
  X
end


puts A::B.x # -> 1
puts A::B.y # -> NameError: uninitialized constant A::B::X
puts A::B.z # -> NameError: uninitialized constant A::B::X