constexpr explicit front_insert_iterator(Container& x);
Effects: Initializes
container
with
addressof(x). constexpr front_insert_iterator& operator=(const typename Container::value_type& value);
constexpr front_insert_iterator& operator=(typename Container::value_type&& value);
constexpr front_insert_iterator& operator*();
constexpr front_insert_iterator& operator+();
constexpr front_insert_iterator operator+(int);