C# (CSharp) PatternBeginning QuackNormal示例

示例#1

 public RedheadDuck()
 {
     flyBehavior   = new FlyWithWings();
     quackBehavior = new QuackNormal();
 }

示例#2

 public MallardDuck()
 {
     quackBehavior = new QuackNormal();
     flyBehavior   = new FlyWithWings();
 }