C# (CSharp) VisitorDemo ConcreteElementA示例

示例#1

 /// <summary>
 /// 访问实现，操作实例
 /// </summary>
 /// <param name="em"></param>
 public override void Visit(ConcreteElementA em)
 {
     //todo 针对 ElementA实例 xxxx
     em.Print();
 }

示例#2

 public abstract void Visit(ConcreteElementA em);