std::swap(std::flat_set)(3)

NAME
std::swap(std::flat_set) - std::swap(std::flat_set)

Synopsis
   Defined in header <flat_set>
   friend void swap( std::flat_set& lhs, std::flat_set& rhs ) noexcept; (since C++23)
   Specializes the std::swap algorithm for std::flat_set. Swaps the contents of lhs and
   rhs. Calls lhs.swap(rhs).

Parameters
   lhs, rhs - containers whose contents to swap

Return value
   (none)

Complexity
   Same as swapping the underlying container.

Example
// Run this code
 #include <algorithm>
 #include <iostream>
 #include <flat_set>
 int main()
 {
     std::flat_set<int> alice{1, 2, 3};
     std::flat_set<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 << "\n" "Bob :";
     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 << "\n" "Bob :";
     std::for_each(bob.begin(), bob.end(), print);
     std::cout << '\n';
 }

Output:
 Alice: 1 2 3
 Bob : 7 8 9 10
 -- SWAP
 Alice: 7 8 9 10
 Bob : 1 2 3

See also
   swap swaps the contents
        (public member function)