[move.iter.nonmember] (original) (raw)

23 Iterators library [iterators]

23.5 Iterator adaptors [predef.iterators]

23.5.3 Move iterators and sentinels [move.iterators]

23.5.3.9 Non-member functions [move.iter.nonmember]

template<class Iterator1, class Iterator2> constexpr auto operator-( const move_iterator<Iterator1>& x, const move_iterator<Iterator2>& y) -> decltype(x.base() - y.base());template<[sized_­sentinel_­for](iterator.concept.sizedsentinel#concept:sized%5Fsentinel%5Ffor "23.3.4.8 Concept sized_­sentinel_­for [iterator.concept.sizedsentinel]")<Iterator> S> friend constexpr iter_difference_t<Iterator> operator-(const move_sentinel<S>& x, const move_iterator& y);template<[sized_­sentinel_­for](iterator.concept.sizedsentinel#concept:sized%5Fsentinel%5Ffor "23.3.4.8 Concept sized_­sentinel_­for [iterator.concept.sizedsentinel]")<Iterator> S> friend constexpr iter_difference_t<Iterator> operator-(const move_iterator& x, const move_sentinel<S>& y);

Returns: x.base() - y.base().

template<class Iterator> constexpr move_iterator<Iterator> operator+(iter_difference_t<Iterator> n, const move_iterator<Iterator>& x);

Constraints: x + n is well-formed and has type Iterator.

friend constexpr iter_rvalue_reference_t<Iterator> iter_move(const move_iterator& i) noexcept(noexcept(ranges::iter_move(i.current)));

Effects: Equivalent to: return ranges​::​iter_­move(i.current);

template<[indirectly_­swappable](alg.req.ind.swap#concept:indirectly%5Fswappable "23.3.7.4 Concept indirectly_­swappable [alg.req.ind.swap]")<Iterator> Iterator2> friend constexpr void iter_swap(const move_iterator& x, const move_iterator<Iterator2>& y) noexcept(noexcept(ranges::iter_swap(x.current, y.current)));

Effects: Equivalent to: ranges​::​iter_­swap(x.current, y.current).

template<class Iterator> constexpr move_iterator<Iterator> make_move_iterator(Iterator i);

Returns: move_­iterator<Iterator>(std​::​move(i)).