cppdraft_translate/cppdraft/range/take/while/view.md

[range.take.while.view]

25 Ranges library [ranges]

25.7 Range adaptors [range.adaptors]

25.7.11 Take while view [range.take.while]

25.7.11.2 Class template take_while_view [range.take.while.view]

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namespace std::ranges {template<view V, class Pred>requires input_range && is_object_v &&indirect_unary_predicate<const Pred, iterator_t>class take_while_view : public view_interface<take_while_view<V, Pred>> {// [range.take.while.sentinel], class template take_while_view​::​sentineltemplate class sentinel; // exposition only V base_ = V(); // exposition only**movable-box pred_; // exposition onlypublic: take_while_view() requires default_initializable && default_initializable = default; constexpr explicit take_while_view(V base, Pred pred); constexpr V base() const & requires copy_constructible { return base_; }constexpr V base() && { return std::move(base_); }constexpr const Pred& pred() const; constexpr auto begin() requires (){ return ranges::begin(base_); }constexpr auto begin() constrequires range &&indirect_unary_predicate<const Pred, iterator_t>{ return ranges::begin(base_); }constexpr auto end() requires (){ return sentinel(ranges::end(base_), addressof(**pred_)); }constexpr auto end() constrequires range &&indirect_unary_predicate<const Pred, iterator_t>{ return sentinel(ranges::end(base_), addressof(**pred_)); }}; template<class R, class Pred> take_while_view(R&&, Pred) -> take_while_view<views::all_t, Pred>;}

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constexpr explicit take_while_view(V base, Pred pred);

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Effects: Initializes base_ with std​::​move(base) andpred_ with std​::​move(pred).

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constexpr const Pred& pred() const;

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Effects: Equivalent to: return **pred_*;