dependency_injection_dynamic_example.rb

class Laptop; end 

class DisplayPortCord 
  def connect(device)
    self.connectedDevice = device;
  end 

  private
  attr_accessor :connectedDevice; 
end

class Monitor
  def Monitor( videoConnector)
     self.videoConnector = videoConnector;
  end 

  def connectToDevice(device)
    videoConnector.connect(device);
  end 

  private
  attr_accessor :videoConnector; 
end