Example #1
0
 //增加
 public void Attach(Observer observer)
 {
     observers.Add(observer);
 }
Example #2
0
 //减少
 public void Detach(Observer observer)
 {
     observers.Remove(observer);
 }
Example #3
0
 public void Attach(Observer o)
 {
     observers.Add(o);
 }