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#ifndef HANDLE_H #define HANDLE_H #include "Animal.h" template <typename T> class Handle{ public: Handle(T *ptr); Handle(const Handle &other); Handle &operator = (const Handle &other); ~Handle(); T *operator->(); private: T *ptr_; }; template <typename T> inline Handle<T>::Handle(T *ptr) :ptr_(ptr->copy()) {} template <typename T> inline Handle<T>::Handle(const Handle &other) :ptr_(other.ptr_->copy()) {} template <typename T> inline Handle<T> &Handle<T>::operator = (const Handle &other) { if(this != &other){ delete ptr_; ptr_ = other.ptr_->copy(); } return *this; } template <typename T> inline Handle<T>::~Handle() { delete ptr_; } template <typename T> inline T *Handle<T>::operator -> () { return ptr_; } #endif /*HANDLE_H*/
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原文地址:http://www.cnblogs.com/gcczhongduan/p/4833296.html