WebJan 27, 2024 · Qt 컨테이너 및 STL 컨테이너 대응 관계 Qt 컨테이너 STL 컨테이너 순차 컨테이너 QVector std::vector - std::deque QList - QLinkedList std::list - std::forward_list 연관 컨테이너 QMap std::map QMultiMap std::multimap - std::set - std::multiset QHash std::unordered_map QMultiHash std::unordered_multimap QSet std::unordered_set - … WebQt containers and std algorithms You can use Qt containers with functions from #include . QList list = {2,3,1}; std::sort(list.begin(), list.end()); std::reverse(list.begin(), list.end()); int even_elements = std::count_if(list.begin(), list.end(),[](int element) {return (element %2==0); }); Other Container-Like Classes

Using QString as the key in std::unordered_map - Stack Overflow

Web对于unordered_map〈string，string〉中的每一对，我需要调用处理函数。它不返回任何东西，也不以任何方式更改数据。如何使用std：：async或std：：thread异步处理map部分？ 我本来想做这样的事 WebQMap std::map QHash std::unordered_map grafton trailers

Using Qt Datatypes in Standard Library Unordered …

WebThe key type of a QHash must provide operator== () and a global qHash (Key) function. The key type of a QMap must provide operator< () specifying a total order. Since Qt 5.8.1 it is also safe to use a pointer type as key, even if the underlying operator< () does not provide a total order. To insert a (key, value) pair into the map, you can use ... WebJun 12, 2015 · I don't know anything about QT, but if QHash is anything like unordered_map, then the issue is where you're using operator []. That function will insert a default-constructed value for a given key if it doesn't exist. In order to do that, the value-type must be default constructible, and: std::pair WebMar 10, 2024 · unordered_map 是 C++ STL 中的一个容器，它提供了一种将键映射到值的方法，可以快速地查找和访问元素。它的实现方式是使用哈希表，因此它的查找和插入操作的时间复杂度是 O(1)。unordered_map 的使用方法与 map 类似，但是 unordered_map 不会对键 … china easylist