The following code example is taken from the book
C++ Move Semantics - The Complete Guide by Nicolai M. Josuttis, Leanpub, 2020
The code is licensed under a Creative Commons Attribution 4.0 International License. Creative Commons License

// raw code

#include "persondefault.hpp"
#include <iostream>
#include <vector>

int main()
  std::vector<Person> coll{"Wolfgang Amadeus Mozart",
                           "Johann Sebastian Bach",
                           "Ludwig van Beethoven"};
  std::cout << "capacity: " << coll.capacity() << '\n';
  coll.push_back("Pjotr Iljitsch Tschaikowski");

  std::cout << "name of coll[0]: " << coll[0].getName() << '\n';