?? auto_ptr.h
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#ifndef Heap_ptr_h#define Heap_ptr_h#include <assert.h>template <class T> class auto_ptr { public: auto_ptr(T* p=0) { p_=p; } ~auto_ptr() { delete p_; } auto_ptr<T>& operator= (T* p) { delete p_; p_=p; return *this; } T* operator->() { assert(p_!=0); return p_; } T& operator* () { assert(p_!=0); return *p_; }private: T* p_; auto_ptr<T>& operator= (const auto_ptr<T>&); auto_ptr (const auto_ptr<T>&);};#if 0// Shamelessly stolen from the excellent 'C++ FAQs' by Cline/Lomow// and Meyers' 'More Effective C++'.#include <stdlib.h>#include <assert.h>template <class T>class auto_ptr{public: auto_ptr (T* ptr = 0) { ptr_=ptr; } ~auto_ptr() { deallocate(); } void deallocate { delete ptr_; ptr_ = 0; } auto_ptr<T>& operator= (T* ptr) { deallocate(); ptr_=ptr; return *this; } T* operator->() { assert(ptr_!=0); return _ptr; } T& operator* () { assert(ptr_!=0); return *_ptr; } T* relinquishOwnership() { T* old = ptr_; ptr_=0; return old; } private: T* ptr_; auto_ptr<T>& operator= (const auto_ptr<T>&); auto_ptr (const auto_ptr<T>&);};#endif#endif?? 快捷鍵說明
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