[front.insert.iterator] (original) (raw)

23 Iterators library [iterators]

23.5 Iterator adaptors [predef.iterators]

23.5.2 Insert iterators [insert.iterators]

23.5.2.3 Class template front_­insert_­iterator [front.insert.iterator]

namespace std { template<class Container> class front_insert_iterator { protected: Container* container = nullptr;public: using iterator_category = output_iterator_tag;using value_type = void;using difference_type = ptrdiff_t;using pointer = void;using reference = void;using container_type = Container;constexpr front_insert_iterator() noexcept = default;constexpr explicit front_insert_iterator(Container& 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);};}

23.5.2.3.1 Operations [front.insert.iter.ops]

constexpr explicit front_insert_iterator(Container& x);

Effects: Initializescontainerwith addressof(x).

constexpr front_insert_iterator& operator=(const typename Container::value_type& value);

Effects: As if by: container->push_­front(value);

constexpr front_insert_iterator& operator=(typename Container::value_type&& value);

Effects: As if by: container->push_­front(std​::​move(value));

constexpr front_insert_iterator& operator*();

constexpr front_insert_iterator& operator++();constexpr front_insert_iterator operator++(int);

23.5.2.3.2 front_­inserter [front.inserter]

template<class Container> constexpr front_insert_iterator<Container> front_inserter(Container& x);

Returns: front_­insert_­iterator<Container>(x).