24 Ranges library [ranges]

24.7 Range adaptors [range.adaptors]

24.7.7 Take view [range.take]

24.7.7.3 Class template take_­view​::​sentinel [range.take.sentinel]

namespace std::ranges { template<view V> template<bool Const> class take_view<V>::sentinel { private: using Base = conditional_t<Const, const V, V>; // exposition only using CI = counted_iterator<iterator_t<Base>>; // exposition only sentinel_t<Base> end_ = sentinel_t<Base>(); // exposition only public: sentinel() = default; constexpr explicit sentinel(sentinel_t<Base> end); constexpr sentinel(sentinel<!Const> s) requires Const && convertible_­to<sentinel_t<V>, sentinel_t<Base>>; constexpr sentinel_t<Base> base() const; friend constexpr bool operator==(const CI& y, const sentinel& x); }; }
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constexpr explicit sentinel(sentinel_t<Base> end);
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Effects: Initializes end_­ with end.
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constexpr sentinel(sentinel<!Const> s) requires Const && convertible_­to<sentinel_t<V>, sentinel_t<Base>>;
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Effects: Initializes end_­ with std​::​move(s.end_­).
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constexpr sentinel_t<Base> base() const;
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Effects: Equivalent to: return end_­;
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friend constexpr bool operator==(const CI& y, const sentinel& x);
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Effects: Equivalent to: return y.count() == 0 || y.base() == x.end_­;