摘要：
is: return true or falseView Code 1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 6 namespace ConsoleApplication6 7 { 8 abstract class Purchasedable 9 {10 11 }12 abstract class Moveable : Purchasedable13 {14 15 }16 abstrac... 阅读全文
摘要：
Abstract的问题：Abstract也许看上去优美，有一般methrod，virtual methord，或者abstract metho 1 abstract class Car 2 { 3 abstract public void tALK(); 4 public void Drive() 5 { 6 Console.WriteLine("WROOOOOOM"); 7 } 8 public virtual void TruboBosst() 9 {10 ... 阅读全文