std::swap(std::multiset)

 

C++

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array (C++11)

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unordered_set (C++11)

unordered_multiset (C++11)

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unordered_multimap (C++11)

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stack

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flat_multimap (C++23)

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std::multiset

Member functions

multiset::multiset multiset::~multiset         multiset::operator= multiset::get_allocator

Iterators multiset::beginmultiset::cbegin (C++11) multiset::endmultiset::cend (C++11) multiset::rbeginmultiset::crbegin (C++11)     multiset::rendmultiset::crend (C++11) Capacity multiset::size multiset::max_size multiset::empty Observers multiset::key_comp multiset::value_comp Modifiers multiset::clear multiset::erase multiset::swap multiset::extract (C++17) multiset::merge (C++17) multiset::insert multiset::insert_range (C++23) multiset::emplace (C++11) multiset::emplace_hint (C++11) Lookup multiset::count multiset::find multiset::contains (C++20) multiset::equal_range multiset::lower_bound multiset::upper_bound

Non-member functions

std::swap(std::multiset) erase_if(std::multiset) (C++20)   operator==operator<=> (C++20) operator!=operator<operator>operator<=operator>= (until C++20)(until C++20)(until C++20)(until C++20)(until C++20)

Deduction guides(C++17)

 

Defined in header <set>
template< class Key, class Compare, class Alloc > void swap( std::multiset<Key, Compare, Alloc>& lhs,            std::multiset<Key, Compare, Alloc>& rhs );		(until C++17)
template< class Key, class Compare, class Alloc > void swap( std::multiset<Key, Compare, Alloc>& lhs,            std::multiset<Key, Compare, Alloc>& rhs )                noexcept(/* see below */);		(since C++17)

Specializes the std::swap algorithm for std::multiset. 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)))

(since C++17)

Example

Run this code

#include <algorithm>
#include <iostream>
#include <set>
 
int main()
{
    std::multiset<int> alice{1, 2, 3};
    std::multiset<int> bob{7, 8, 9, 10};
 
    auto print = [](const int& n) { std::cout << ' ' << n; };
 
    // Print state before swap
    std::cout << "Alice:";
    std::for_each(alice.begin(), alice.end(), print);
    std::cout << "\nBobby:";
    std::for_each(bob.begin(), bob.end(), print);
    std::cout << '\n';
 
    std::cout << "-- SWAP\n";
    std::swap(alice, bob);
 
    // Print state after swap
    std::cout << "Alice:";
    std::for_each(alice.begin(), alice.end(), print);
    std::cout << "\nBobby:";
    std::for_each(bob.begin(), bob.end(), print);
    std::cout << '\n';
}

Output:

Alice: 1 2 3
Bobby: 7 8 9 10
-- SWAP
Alice: 7 8 9 10
Bobby: 1 2 3

See also

swap	swaps the contents (public member function)