std::unordered_set<Key,Hash,KeyEqual,Allocator>::rehash
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std::unordered_set void rehash( size_type count );
(since C++11)
Changes the number of buckets to a value n that is not less than count and satisfies n >= size() / max_load_factor(), then rehashes the container, i.e. puts the elements into appropriate buckets considering that total number of buckets has changed.
[edit] Parameters
count
-
lower bound for the new number of buckets
[edit] Return value
(none)
[edit] Complexity
Average case linear in the size of the container, worst case quadratic.
[edit] Notes
rehash(0) may be used to force an unconditional rehash, such as after suspension of automatic rehashing by temporarily increasing max_load_factor().