tmp/tmpjzepdcbi/{from.md → to.md}
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| 1 |
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#### Class template `take_while_view::sentinel` <a id="range.take.while.sentinel">[[range.take.while.sentinel]]</a>
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``` cpp
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namespace std::ranges {
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template<view V, class Pred>
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requires input_range<V> && is_object_v<Pred> &&
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indirect_unary_predicate<const Pred, iterator_t<V>>
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template<bool Const>
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class take_while_view<V, Pred>::sentinel { // exposition only
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using Base = conditional_t<Const, const V, V>; // exposition only
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sentinel_t<Base> end_ = sentinel_t<Base>(); // exposition only
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const Pred* pred_ = nullptr; // exposition only
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public:
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sentinel() = default;
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constexpr explicit sentinel(sentinel_t<Base> end, const Pred* pred);
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constexpr sentinel(sentinel<!Const> s)
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requires Const && convertible_to<sentinel_t<V>, sentinel_t<Base>>;
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constexpr sentinel_t<Base> base() const { return end_; }
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friend constexpr bool operator==(const iterator_t<Base>& x, const sentinel& y);
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};
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}
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```
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``` cpp
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constexpr explicit sentinel(sentinel_t<Base> end, const Pred* pred);
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```
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*Effects:* Initializes *end\_* with `end` and *pred\_* with `pred`.
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``` cpp
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constexpr sentinel(sentinel<!Const> s)
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requires Const && convertible_to<sentinel_t<V>, sentinel_t<Base>>;
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```
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*Effects:* Initializes *end\_* with `s.`*`end_`* and *pred\_* with
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`s.`*`pred_`*.
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``` cpp
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friend constexpr bool operator==(const iterator_t<Base>& x, const sentinel& y);
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```
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*Effects:* Equivalent to:
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`return y.`*`end_`*` == x || !invoke(*y.`*`pred_`*`, *x);`
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