std::unordered_multiset<Key,Hash,KeyEqual,Allocator>::clear

#include <iostream>
#include <string_view>
#include <unordered_set>

void print_info(std::string_view rem, const std::unordered_multiset<int>& v)
{
    std::cout << rem << "{ ";
    for (const auto& value : v)
        std::cout << value << ' ';
    std::cout << "}\n";
    std::cout << "Size=" << v.size() << '\n';
}

int main()
{
    std::unordered_multiset<int> container{1, 2, 3};
    print_info("Before clear: ", container);
    container.clear();
    print_info("After clear: ", container);
}

Possible output:

Before clear: { 1 2 3 }
Size=3
After clear: { }
Size=0