public override void VisitConcreteElementB(ConcreteElementB concreteElementB) { Console.WriteLine("{0}被{1}访问", concreteElementB.GetType().Name, this.GetType().Name); }
public override void VisitConcreteElementB(ConcreteElementB concreteElementB) { Console.WriteLine("{0}被{1}访问", concreteElementB.GetType().Name, this.GetType().Name); }
public abstract void VisitConcreteElementB(ConcreteElementB concreteElementB);
public abstract void VisitConcreteElementB(ConcreteElementB concreteElementB);