C++单例
1 template<class T> 2 class Singleton 3 { 4 public: 5 using object_type = T; 6 struct object_creator 7 { 8 object_creator() 9 { 10 Singleton<T>::instance(); 11 } 12 }; 13 14 static object_creator creator_object; 15 public: 16 static object_type* instance() 17 { 18 static object_type _instance; 19 return(&_instance); 20 } 21 }; 22 template<typename T> typename Singleton<T>::object_creator Singleton<T>::creator_object;