76 struct optional  struct
78    typedef optional<T> _self_type; /**< Type for the optional class itself. */
86    constexpr optional(std::nullptr_t) : engaged(false)  in optional()  function
92    constexpr optional() : engaged(false)  in optional()  function
103    optional(T&& other) : engaged(false)  in optional()  argument
116    optional(T const& other) : engaged(false)  in optional()  function
130 …optional(U&& other, typename std::enable_if<std::is_convertible<U, T>::value>::type* = 0) : engage…  in optional()  argument
144 …optional(U const& other, typename std::enable_if<std::is_convertible<U, T>::value>::type* = 0) : e…  in optional()  argument
158    optional(optional<T> const& other)  in optional()  argument
173    optional(optional<T>&& other)  in optional()  function
190 …optional(optional<U>&& other, typename std::enable_if<std::is_convertible<U, T>::value>::type* = 0)  in optional()  function
207 …optional(optional<U> const& other, typename std::enable_if<std::is_convertible<U, T>::value>::type…  in optional()  function
223    _self_type& operator=(optional<T>&& other)  in operator =()
242    _self_type& operator=(optional<T>const& other)  in operator =()
260 … std::enable_if<std::is_convertible<U, T>::value, _self_type>::type& operator=(optional<U>&& other)  in operator =()
280 …::enable_if<std::is_convertible<U, T>::value, _self_type>::type& operator=(optional<U>const& other)  in operator =()
291    void disengage()  in disengage()
299    ~optional()  in ~optional()
308    explicit operator bool() const  in operator bool()
317    bool operator!() const  in operator !()
327    T* operator->()  in operator ->()
337    T const* operator->() const  in operator ->()
346    T& operator*() { return get(); }  in operator *()
352    T const& operator*() const { return get(); }  in operator *()
358    T& get() { return *this->operator->(); }  in get()
364    T const& get() const { return *this->operator->(); }  in get()
370    void swap(optional<T>& other)  in swap()
392    bool is_engaged() const  in is_engaged()
402    void _construct(U&& object)  in _construct()
420    void _destroy()  in _destroy()
430      <sizeof(T),std::alignment_of<T>::value>::type buffer_type;
435    buffer_type buffer;
440    bool engaged;
444 struct optional<T&>  struct
446    typedef optional<T&> _self_type; /**< Type for the optional class itself. */
454    constexpr optional(std::nullptr_t) : pointer(nullptr)  in optional()  argument
460    constexpr optional() : pointer(nullptr)  in optional()  function
471    optional(T& other) : pointer(&other)  in optional()  function
501    void disengage()  in disengage()
510    explicit operator bool() const  in operator bool()
519    bool operator!() const  in operator !()
529    T* operator->()  in operator ->()
539    T const* operator->() const  in operator ->()
548    T& operator*() { return get(); }  in operator *()
554    T const& operator*() const { return get(); }  in operator *()
560    T& get() { return *this->operator->(); }  in get()
566    T const& get() const { return *this->operator->(); }  in get()
572    void swap(optional<T>& other)  in swap()
581    bool is_engaged() const  in is_engaged()
590    T* pointer;