cppdraft_translate/cppdraft/range/repeat/view.md

[range.repeat.view]

25 Ranges library [ranges]

25.6 Range factories [range.factories]

25.6.5 Repeat view [range.repeat]

25.6.5.2 Class template repeat_view [range.repeat.view]

namespace std::ranges {templateconcept integer-like-with-usable-difference-type = // exposition only**is-signed-integer-like || (is-integer-like && weakly_incrementable); template<move_constructible T, semiregular Bound = unreachable_sentinel_t>requires (is_object_v && same_as<T, remove_cv_t> &&(integer-like-with-usable-difference-type ||same_as<Bound, unreachable_sentinel_t>))class repeat_view : public view_interface<repeat_view<T, Bound>> {private:// [range.repeat.iterator], class repeat_view​::​iteratorstruct iterator; // exposition only**movable-box value_; // exposition only, see [range.move.wrap] Bound bound_ = Bound(); // exposition onlypublic: repeat_view() requires default_initializable = default; constexpr explicit repeat_view(const T& value, Bound bound = Bound())requires copy_constructible; constexpr explicit repeat_view(T&& value, Bound bound = Bound()); template<class... TArgs, class... BoundArgs>requires constructible_from<T, TArgs...> &&constructible_from<Bound, BoundArgs...>constexpr explicit repeat_view(piecewise_construct_t, tuple<TArgs...> value_args, tuple<BoundArgs...> bound_args = tuple<>{}); constexpr iterator begin() const; constexpr iterator end() const requires (<Bound, unreachable_sentinel_t>); constexpr unreachable_sentinel_t end() const noexcept; constexpr auto size() const requires (<Bound, unreachable_sentinel_t>); }; template<class T, class Bound = unreachable_sentinel_t> repeat_view(T, Bound = Bound()) -> repeat_view<T, Bound>;}

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constexpr explicit repeat_view(const T& value, Bound bound = Bound()) requires [copy_constructible](concept.copyconstructible#concept:copy_constructible "18.4.14 Concept copy_­constructible [concept.copyconstructible]")<T>;

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Preconditions: If Bound is not unreachable_sentinel_t,bound ≥ 0.

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Effects: Initializes value_ with value andbound_ with bound.

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constexpr explicit repeat_view(T&& value, Bound bound = Bound());

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Preconditions: If Bound is not unreachable_sentinel_t, bound ≥ 0.

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Effects: Initializes value_ with std​::​move(value) andbound_ with bound.

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template<class... TArgs, class... BoundArgs> requires [constructible_from](concept.constructible#concept:constructible_from "18.4.11 Concept constructible_­from [concept.constructible]")<T, TArgs...> && [constructible_from](concept.constructible#concept:constructible_from "18.4.11 Concept constructible_­from [concept.constructible]")<Bound, BoundArgs...> constexpr explicit repeat_view(piecewise_construct_t, tuple<TArgs...> value_args, tuple<BoundArgs...> bound_args = tuple<>{});

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Effects: Initializes value_ withmake_from_tuple(std​::​move(value_args)) and initializes bound_ withmake_from_tuple(std​::​move(bound_args)).

The behavior is undefined ifBound is not unreachable_sentinel_t andbound_ is negative.

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constexpr iterator begin() const;

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Effects: Equivalent to: return iterator(addressof(**value_*));

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constexpr iterator end() const requires (![same_as](concept.same#concept:same_as "18.4.2 Concept same_­as [concept.same]")<Bound, unreachable_sentinel_t>);

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Effects: Equivalent to: return iterator(addressof(**value_*), bound_);

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constexpr unreachable_sentinel_t end() const noexcept;

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Effects: Equivalent to: return unreachable_sentinel;

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constexpr auto size() const requires (![same_as](concept.same#concept:same_as "18.4.2 Concept same_­as [concept.same]")<Bound, unreachable_sentinel_t>);

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Effects: Equivalent to: return to-unsigned-like(bound_);