1 class Noncopyable{//主要作用在于禁止基类对象的拷贝;
2 public:
3     Noncopyable(){}
4     ~Noncopyable(){}
5     Noncopyable(const Noncopyable&) = delete;
6     const Noncopyable operator=(const Noncopyable&) = delete;
7 };