unordered_set4.cpp 648 Bytes
#include <functional>
#include <unordered_set>
using namespace std;
#include "employee.h"

int main() {
  Employee Ben("Ben", "Keller", "000-00-0000");
  Employee Bill("Bill", "McQuain", "111-11-1111");
  Employee Dwight("Dwight", "Barnette", "888-88-8888");

  unordered_set<Employee, decltype([](const Employee &o) {
                  return std::hash<std::string>()(o.FirstName) ^
                         (std::hash<std::string>()(o.LastName) << 1) ^
                         (std::hash<std::string>()(o.ID) << 2);
                })>
      S;
  S.insert(Bill);
  S.insert(Dwight);
  S.insert(Ben);

  for (auto i : S)
    cout << i << endl;
}