Serializing Vectors of Custom Types

1#include <cereal/archives/binary.hpp>
2#include <cereal/types/string.hpp>
3#include <cereal/types/vector.hpp>
4#include <fstream>
5#include <iostream>
6#include <vector>
7
8class Player {
9 public:
10  Player() = default;
11  Player(const std::string& name, int level)
12    : name(name), level(level) {}
13
14  std::string name;
15  int level;
16
17 private:
18  friend class cereal::access;
19
20  template <class Archive>
21  void serialize(Archive& ar) {
22    ar(name, level);
23  }
24};
25
26int main() {
27  std::vector<Player> players;
28  players.emplace_back("Alice", 10);
29  players.emplace_back("Bob", 20);
30
31  {
32    std::ofstream file("players.dat",
33      std::ios::binary);
34    cereal::BinaryOutputArchive archive(file);
35    archive(players);
36  }
37
38  std::vector<Player> loadedPlayers;
39
40  {
41    std::ifstream file("players.dat",
42      std::ios::binary);
43    cereal::BinaryInputArchive archive(file);
44    archive(loadedPlayers);
45  }
46
47  for (const auto& player : loadedPlayers) {
48    std::cout << player.name << " (Level "
49      << player.level << ")\n";
50  }
51}