1 #pragma once 2 3 template<typename T> class AutoPtr 4 { 5 public: 6 explicit AutoPtr (T* const p = 0) : p_(p)7 p_(p) 8 { 9 } 10 ~AutoPtr()11 ~AutoPtr () 12 { 13 if (p_) 14 delete p_; 15 } 16 deallocate()17 void deallocate () 18 { 19 *this = 0; 20 } 21 release()22 T* release () 23 { 24 T* const p = p_; 25 p_ = 0; 26 return p; 27 } 28 29 void operator = (T* const p) 30 { 31 if (p_) 32 delete p_; 33 p_ = p; 34 } 35 36 T* operator -> () const 37 { 38 return p_; 39 } 40 41 T& operator * () const 42 { 43 return *p_; 44 } 45 46 operator bool () const 47 { 48 return p_; 49 } 50 51 operator T* () const 52 { 53 return p_; 54 } 55 56 private: 57 T* p_; 58 59 AutoPtr (const AutoPtr&); /* no copy */ 60 void operator = (AutoPtr&); /* no assignment */ 61 }; 62