C++的一个简单的句柄类模板

#ifndef HANDLE_H
#define HANDLE_H 
#include "Animal.h"

template 
  
   
class Handle{
    public:
        Handle(T *ptr);
        Handle(const Handle &other);
        Handle &operator = (const Handle &other);
        ~Handle();
        T *operator->();
    private:
        T *ptr_;
};

template 
   
     inline Handle
    
     ::Handle(T *ptr) :ptr_(ptr->copy()) {} template 
     
       inline Handle
      
       ::Handle(const Handle &other) :ptr_(other.ptr_->copy()) {} template 
       
         inline Handle
        






          &Handle
         
          ::operator = (const Handle &other) { if(this != &other){ delete ptr_; ptr_ = other.ptr_->copy(); } return *this; } template 
          
            inline Handle
           
            ::~Handle() { delete ptr_; } template 
            
              inline T *Handle
             
              ::operator -> () { return ptr_; } #endif /*HANDLE_H*/