C# (CSharp) DesignMethod.访问者模式 GoldPerson示例

示例#1

 public override void GetGoldConclusion(GoldPerson gold)
 {
     Console.WriteLine("so easy");
 }

示例#2

 public override void GetGoldConclusion(GoldPerson gold)
 {
     Console.WriteLine("impossible");
 }

示例#3

 public abstract void GetGoldConclusion(GoldPerson gold);