90 struct unique_ptr  struct
92   using element_type = T;
94   using v = vtable<T>;
96   explicit unique_ptr (T *p = nullptr) : p (p) {}  in unique_ptr()  function
98   unique_ptr (unique_ptr &&o)  noexcept : p (o.p) { o.p = nullptr; }  in unique_ptr()  argument
100 …tr& operator = (unique_ptr &&o)  noexcept { v::destroy (p); p = o.p; o.p = nullptr; return *this; }  in operator =()
101   ~unique_ptr () { v::destroy (p); p = nullptr; }  in ~unique_ptr()
103   T* get() const { return p; }  in get()
104   T* release () { T* v = p; p = nullptr; return v; }  in release()
106   void swap (unique_ptr &o)  noexcept { std::swap (p, o.p); }  in swap()
109   operator T * () const { return p; }  in operator T*()
110   T& operator * () const { return *get (); }  in operator *()
111   T* operator -> () const { return get (); }  in operator ->()
112   operator bool () { return p; }  in operator bool()
115   T *p;