25 Ranges library [ranges]

25.6 Range factories [range.factories]

25.6.4 Iota view [range.iota]

25.6.4.4 Class iota_view​::​sentinel [range.iota.sentinel]

namespace std::ranges { template<weakly_incrementable W, semiregular Bound> requires weakly-equality-comparable-with<W, Bound> && copyable<W> struct iota_view<W, Bound>::sentinel { private: Bound bound_ = Bound(); // exposition only public: sentinel() = default; constexpr explicit sentinel(Bound bound); friend constexpr bool operator==(const iterator& x, const sentinel& y); friend constexpr iter_difference_t<W> operator-(const iterator& x, const sentinel& y) requires sized_sentinel_for<Bound, W>; friend constexpr iter_difference_t<W> operator-(const sentinel& x, const iterator& y) requires sized_sentinel_for<Bound, W>; }; }
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constexpr explicit sentinel(Bound bound);
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Effects: Initializes bound_ with bound.
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friend constexpr bool operator==(const iterator& x, const sentinel& y);
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Effects: Equivalent to: return x.value_ == y.bound_;
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friend constexpr iter_difference_t<W> operator-(const iterator& x, const sentinel& y) requires sized_sentinel_for<Bound, W>;
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Effects: Equivalent to: return x.value_ - y.bound_;
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friend constexpr iter_difference_t<W> operator-(const sentinel& x, const iterator& y) requires sized_sentinel_for<Bound, W>;
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Effects: Equivalent to: return -(y - x);