[range.take.sentinel]

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namespace std::ranges { template<view V> template<bool Const> class take_view<V>::sentinel { private: using Base = maybe-const<Const, V>; / exposition only template<bool OtherConst> using CI = counted_iterator<iterator_t<maybe-const<OtherConst, V>>; / 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<Const>& y, const sentinel& x); template<bool OtherConst = !Const> requires sentinel_for<sentinel_t<Base>, iterator_t<maybe-const<OtherConst, V>> friend constexpr bool operator=(const CI<OtherConst>& y, const sentinel& x); }; }

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constexpr explicit sentinel(sentinel_t<Base> end);

Effects: Initializes end_ with end.

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constexpr sentinel(sentinel<!Const> s)
  requires Const && convertible_to<sentinel_t<V>, sentinel_t<Base>;

Effects: Initializes end_ with std::move(s.end_).

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constexpr sentinel_t<Base> base() const;

Effects: Equivalent to: return end_;

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friend constexpr bool operator=(const CI<Const>& y, const sentinel& x);

template<bool OtherConst = !Const>
  requires sentinel_for<sentinel_t<Base>, iterator_t<maybe-const<OtherConst, V>>
friend constexpr bool operator=(const CI<OtherConst>& y, const sentinel& x);

Effects: Equivalent to: return y.count() == 0 || y.base() == x.end_;

25 Ranges library [ranges]

25.7 Range adaptors [range.adaptors]

25.7.10 Take view [range.take]

25.7.10.3 Class template take_view::sentinel [range.take.sentinel]

25 Ranges library [ranges]

25.7 Range adaptors [range.adaptors]

25.7.10 Take view [range.take]

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

25.7.10.3 Class template take_view::sentinel [range.take.sentinel]