constexpr unique_ptr() noexcept;
constexpr unique_ptr(nullptr_t) noexcept;
explicit unique_ptr(pointer p) noexcept;
unique_ptr(pointer p, const D& d) noexcept;
unique_ptr(pointer p, remove_reference_t<D>&& d) noexcept;
unique_ptr(unique_ptr&& u) noexcept;
template<class U, class E> unique_ptr(unique_ptr<U, E>&& u) noexcept;
unique_ptr& operator=(unique_ptr&& u) noexcept;
template<class U, class E> unique_ptr& operator=(unique_ptr<U, E>&& u) noexcept;
unique_ptr& operator=(nullptr_t) noexcept;
add_lvalue_reference_t<T> operator*() const;
pointer operator->() const noexcept;
pointer get() const noexcept;
deleter_type& get_deleter() noexcept;
const deleter_type& get_deleter() const noexcept;
explicit operator bool() const noexcept;
pointer release() noexcept;
void reset(pointer p = pointer()) noexcept;
void swap(unique_ptr& u) noexcept;