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39 lines
1.2 KiB
C++
39 lines
1.2 KiB
C++
/*
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* Copyright (c) 2021, the SerenityOS developers.
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*
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* SPDX-License-Identifier: BSD-2-Clause
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*/
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#pragma once
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#include <AK/Concepts.h>
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#include <AK/Traits.h>
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#include <AK/Types.h>
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namespace AK {
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template<typename TEndIterator, IteratorPairWith<TEndIterator> TIterator, typename TUnaryPredicate>
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[[nodiscard]] constexpr TIterator find_if(TIterator first, TEndIterator last, TUnaryPredicate&& pred)
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{
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for (; first != last; ++first) {
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if (pred(*first)) {
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return first;
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}
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}
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return last;
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}
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template<typename TEndIterator, IteratorPairWith<TEndIterator> TIterator, typename V>
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[[nodiscard]] constexpr TIterator find(TIterator first, TEndIterator last, V const& value)
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{
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return find_if(first, last, [&]<typename T>(T const& entry) { return Traits<T>::equals(entry, value); });
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}
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template<typename TEndIterator, IteratorPairWith<TEndIterator> TIterator, typename V>
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[[nodiscard]] constexpr size_t find_index(TIterator first, TEndIterator last, V const& value)
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requires(requires(TIterator it) { it.index(); })
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{
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return find_if(first, last, [&]<typename T>(T const& entry) { return Traits<T>::equals(entry, value); }).index();
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}
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}
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