Apr 26, 2025 · std::unordered_set is an associative container that contains a set of unique objects of type Key. Search, insertion, and removal have average constant-time complexity.

Sep 20, 2025 · In C++, unordered_set is an unordered associative container that stores unique elements. Internally uses a hashing to store elements which provides average constant time O (1) for …

Unordered sets are containers that store unique elements in no particular order, and which allow for fast retrieval of individual elements based on their value. In an unordered_set, the value of an element is …

Aug 4, 2025 · API reference for the C++ Standard Library container class `unordered_set`, which is used to store and retrieve data from an unordered collection.

摘要：这篇文章全方位解构 unordered_map 和 unordered_set。理解底层原理、学会 unordered_map 和 unordered_set 的所有常用操作。 本文是《C++从零开始到精通》系列的STL篇上一篇：【049-STL篇 …

Apr 26, 2025 · std::unordered_set ... std::unordered_set is an associative container that contains a set of unique objects of type Key . Search, insertion, and removal have average constant-time complexity. …

std::unordered_set is an associative container that contains a set of unique objects of type Key. Search, insertion, and removal have average constant-time complexity.

Nov 21, 2021 · Sets max_load_factor () to 1.0. If multiple elements in the range have keys that compare equivalent, it is unspecified which element is inserted (pending LWG2844).

Jul 11, 2025 · If you want to look at implementation details of set and unordered_set in c++ STL, see Set Vs Map. Set allows to traverse elements in sorted order whereas Unordered_set doesn't allow to …

Oct 23, 2024 · Unordered set in C++ is an associative container that stores unique elements in no particular order. It is part of the C++ Standard Template Library (STL) and provides a way to store …