[insert.iterator] (original) (raw)

23 Iterators library [iterators]

23.5 Iterator adaptors [predef.iterators]

23.5.2 Insert iterators [insert.iterators]

23.5.2.4 Class template insert_­iterator [insert.iterator]

namespace std { template<class Container> class insert_iterator { protected: Container* container = nullptr; ranges::iterator_t<Container> iter = ranges::iterator_t<Container>();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; insert_iterator() = default;constexpr insert_iterator(Container& x, ranges::iterator_t<Container> i);constexpr insert_iterator& operator=(const typename Container::value_type& value);constexpr insert_iterator& operator=(typename Container::value_type&& value);constexpr insert_iterator& operator*();constexpr insert_iterator& operator++();constexpr insert_iterator& operator++(int);};}

23.5.2.4.1 Operations [insert.iter.ops]

constexpr insert_iterator(Container& x, ranges::iterator_t<Container> i);

Effects: Initializescontainerwith addressof(x) anditerwith i.

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

Effects: As if by:iter = container->insert(iter, value);++iter;

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

Effects: As if by:iter = container->insert(iter, std::move(value));++iter;

constexpr insert_iterator& operator*();

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

23.5.2.4.2 inserter [inserter]

template<class Container> constexpr insert_iterator<Container> inserter(Container& x, ranges::iterator_t<Container> i);

Returns: insert_­iterator<Container>(x, i).