use instance methods with self for method chaining

self_chain.rb

class Module

  def with_chain(&block)
    m = Module.new
    m.instance_eval(&block)
    m.methods(false).each do |name|
      define_method name do
        m.method(name).call
        self
      end
    end
  end
end

class Me

  def three
    puts 'three callled'
  end

  with_chain do
    def one
      puts "one called"
    end

    def two
      puts "two called"
    end
  end
end

Me.new.two.one.three
Me.new.three.two.one