std::swap(std::unordered_set)

template< class Key, class Hash, class KeyEqual, class Alloc >
void swap( unordered_set<Key,Hash,KeyEqual,Alloc>& lhs, 
           unordered_set<Key,Hash,KeyEqual,Alloc>& rhs );

(since C++11)
(until C++17)

template< class Key, class Hash, class KeyEqual, class Alloc >
void swap( unordered_set<Key,Hash,KeyEqual,Alloc>& lhs, 
           unordered_set<Key,Hash,KeyEqual,Alloc>& rhs ) noexcept(/* see below */);

(since C++17)

Specializes the std::swap algorithm for std::unordered_set. Swaps the contents of lhs and rhs. Calls lhs.swap(rhs).

Parameters

lhs, rhs

containers whose contents to swap

Return value

(none).

Complexity

Constant.

Exceptions

noexcept specification:

noexcept(noexcept(lhs.swap(rhs)))