26 Ranges library [ranges]

26.7 Range adaptors [range.adaptors]

26.7.15 Join with view [range.join.with]

26.7.15.4 Class template join_with_view​::​sentinel [range.join.with.sentinel]

namespace std::ranges { template<input_range V, forward_range Pattern> requires view<V> && input_range<range_reference_t<V>> && view<Pattern> && compatible-joinable-ranges<range_reference_t<V>, Pattern> template<bool Const> class join_with_view<V, Pattern>::sentinel { using Parent = maybe-const<Const, join_with_view>; // exposition only using Base = maybe-const<Const, V>; // exposition only sentinel_t<Base> end_ = sentinel_t<Base>(); // exposition only constexpr explicit sentinel(Parent& parent); // exposition only public: sentinel() = default; constexpr sentinel(sentinel<!Const> s) requires Const && convertible_to<sentinel_t<V>, sentinel_t<Base>>; template<bool OtherConst> requires sentinel_for<sentinel_t<Base>, iterator_t<maybe-const<OtherConst, V>>> friend constexpr bool operator==(const iterator<OtherConst>& x, const sentinel& y); }; }
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constexpr explicit sentinel(Parent& parent);
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Effects: Initializes end_ with ranges​::​end(parent.base_).
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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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template<bool OtherConst> requires sentinel_for<sentinel_t<Base>, iterator_t<maybe-const<OtherConst, V>>> friend constexpr bool operator==(const iterator<OtherConst>& x, const sentinel& y);
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Effects: Equivalent to: return x.outer() == y.end_;