【设计模式】单例模式

 1 class Singleton {
 2 public:
 3     static Singleton& GetInstance() {
 4         static Singleton instance;
 5         return instance;
 6     }
 7     
 8 private:
 9     Singleton() {}
10     Singleton(const Singleton&);
11     Singleton& operator=(const Singleton&);
12 };
13 
14 int main()
15 {
16     Singleton &s = Singleton::GetInstance();
17 
18     return 0;
19 }