Apr 26, 2025 · std::set is an associative container that contains a sorted set of unique objects of type Key. Sorting is done using the key comparison function Compare. Search, removal, and insertion operations have logarithmic complexity. Sets are …

Jul 12, 2023 · Constructs new container from a variety of data sources and optionally using user supplied allocator alloc or comparison function object comp.

Nov 27, 2023 · namespace std { template<class Key, class Compare = less <Key>, class Allocator = allocator <Key>> class multiset { public: // types using key_type = Key; using key ...

Dec 10, 2024 · Sets all bits to true or sets one bit to specified value.

Mar 15, 2024 · 1,2) A pair consisting of an iterator to the inserted element (or to the element that prevented the insertion) and a bool value set to true if and only if the insertion took place.

Nov 5, 2023 · 2) Checks if there is an element with key that compares equivalent to x.

Feb 22, 2025 · each of which is designed to support a different set of operations. The container manages the storage space that is allocated for its elements and provides member functions to access them, either directly or through iterators (objects with properties similar to pointers). Most containers have at least several member functions in common, and share functionalities. …

Nov 20, 2021 · This overload participates in overload resolution only if Compare is transparent. It allows calling this function without constructing an instance of Key.

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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.