24 Iterators library [iterators]

24.7 range access [iterator.range]

In addition to being available via inclusion of the <iterator> header, the function templates in [iterator.range] are available when any of the following headers are included: <array>, <deque>, <forward_list>, <list>, <map>, <regex>, <set>, <string>, <unordered_map>, <unordered_set>, and <vector>.

template <class C> auto begin(C& c) -> decltype(c.begin()); template <class C> auto begin(const C& c) -> decltype(c.begin());

Returns: c.begin().

template <class C> auto end(C& c) -> decltype(c.end()); template <class C> auto end(const C& c) -> decltype(c.end());

Returns: c.end().

template <class T, size_t N> constexpr T* begin(T (&array)[N]) noexcept;

Returns: array.

template <class T, size_t N> constexpr T* end(T (&array)[N]) noexcept;

Returns: array + N.

template <class C> constexpr auto cbegin(const C& c) noexcept(noexcept(std::begin(c))) -> decltype(std::begin(c));

Returns: std::begin(c).

template <class C> constexpr auto cend(const C& c) noexcept(noexcept(std::end(c))) -> decltype(std::end(c));

Returns: std::end(c).

template <class C> auto rbegin(C& c) -> decltype(c.rbegin()); template <class C> auto rbegin(const C& c) -> decltype(c.rbegin());

Returns: c.rbegin().

template <class C> auto rend(C& c) -> decltype(c.rend()); template <class C> auto rend(const C& c) -> decltype(c.rend());

Returns: c.rend().

template <class T, size_t N> reverse_iterator<T*> rbegin(T (&array)[N]);

Returns: reverse_iterator<T*>(array + N).

template <class T, size_t N> reverse_iterator<T*> rend(T (&array)[N]);

Returns: reverse_iterator<T*>(array).

template <class E> reverse_iterator<const E*> rbegin(initializer_list<E> il);

Returns: reverse_iterator<const E*>(il.end()).

template <class E> reverse_iterator<const E*> rend(initializer_list<E> il);

Returns: reverse_iterator<const E*>(il.begin()).

template <class C> auto crbegin(const C& c) -> decltype(std::rbegin(c));

Returns: std::rbegin(c).

template <class C> auto crend(const C& c) -> decltype(std::rend(c));

Returns: std::rend(c).