std::forward_list<T,Allocator>:: push_front

#include <forward_list>
#include <iomanip>
#include <iostream>
#include <string>
int main()
{
    std::forward_list<std::string> letters;
    letters.push_front("me"); // 重载 (1)
    std::string s{"send"};
    letters.push_front(std::move(s)); // 重载 (2)
    std::cout << "std::forward_list letters holds: ";
    for (auto&& e : letters)
        std::cout << std::quoted(e) << ' ';
    std::cout << "\nMoved-from string s holds: " << std::quoted(s) << '\n';
}