C# (CSharp) StatePattern TrafficLight示例

示例#1

文件： GreenLight.cs 项目： Zwi17/C-

 public void Change(TrafficLight light)
 {
     light.State = new YellowLightR();
 }

示例#2

文件： YellowLightR.cs 项目： Zwi17/C-

 public void Change(TrafficLight light)
 {
     light.State = new RedLight();
 }