`<hash_set>`

Note

This header is obsolete. The alternative is <unordered_set>.

Defines the container class templates hash_set and hash_multiset and their supporting templates.

Syntax

#include <hash_set>

Hash_set version	Hash_multiset version	Description
operator!= (hash_set)	operator!= (hash_multiset)	Tests if the hash_set or hash_multiset object on the left side of the operator is not equal to the hash_set or hash_multiset object on the right side.
operator== (hash_set)	operator== (hash_multiset)	Tests if the hash_set or hash_multiset object on the left side of the operator is equal to the hash_set or hash_multiset object on the right side.

Hash_set version	Hash_multiset version	Description
swap (hash_set)	swap (hash_multiset)	Exchanges the elements of two hash_sets or hash_multisets.

Class	Description
hash_compare Class	Describes an object that can be used by any of the hash associative containers — hash_map, hash_multimap, hash_set, or hash_multiset — as a default `Traits` parameter object to order and hash the elements they contain.
hash_set Class	Used for the storage and fast retrieval of data from a collection in which the values of the elements contained are unique and serve as the key values.
hash_multiset Class	Used for the storage and fast retrieval of data from a collection in which the values of the elements contained are unique and serve as the key values.