25 Ranges library [ranges]

25.7 Range adaptors [range.adaptors]

25.7.30 Slide view [range.slide]

25.7.30.4 Class slide_view​::​sentinel [range.slide.sentinel]

namespace std::ranges { template<forward_range V> requires view<V> class slide_view<V>::sentinel { sentinel_t<V> end_ = sentinel_t<V>(); // exposition only constexpr explicit sentinel(sentinel_t<V> end); // exposition only public: sentinel() = default; friend constexpr bool operator==(const iterator<false>& x, const sentinel& y); friend constexpr range_difference_t<V> operator-(const iterator<false>& x, const sentinel& y) requires sized_sentinel_for<sentinel_t<V>, iterator_t<V>>; friend constexpr range_difference_t<V> operator-(const sentinel& y, const iterator<false>& x) requires sized_sentinel_for<sentinel_t<V>, iterator_t<V>>; }; }
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[Note 1: 
sentinel is used only when slide-caches-first<V> is true.
— end note]
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constexpr explicit sentinel(sentinel_t<V> end);
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Effects: Initializes end_ with end.
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friend constexpr bool operator==(const iterator<false>& x, const sentinel& y);
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Returns: x.last_ele_ == y.end_.
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friend constexpr range_difference_t<V> operator-(const iterator<false>& x, const sentinel& y) requires sized_sentinel_for<sentinel_t<V>, iterator_t<V>>;
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Returns: x.last_ele_ - y.end_.
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friend constexpr range_difference_t<V> operator-(const sentinel& y, const iterator<false>& x) requires sized_sentinel_for<sentinel_t<V>, iterator_t<V>>;
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Returns: y.end_ - x.last_ele_.