Ticket #8129: ex.13.7.cpp

#include <boost/multi_index_container.hpp> 
#include <boost/multi_index/hashed_index.hpp> 
#include <boost/multi_index/member.hpp> 
#include <boost/version.hpp>
#include <iostream> 
#include <string> 

struct person
{
  std::string name;
  int age;

  person(const std::string &n, int a) : name(n), age(a) {}
};

typedef boost::multi_index::multi_index_container<
  person,
  boost::multi_index::indexed_by<
    boost::multi_index::hashed_non_unique<
      boost::multi_index::member<
        person, std::string, &person::name
      >
    >,
    boost::multi_index::hashed_non_unique<
      boost::multi_index::member<
        person, int, &person::age
      >
    >
  >
> person_multi;

void set_age(person &p)
{
  p.age = 32;
}

int main()
{
  person_multi persons;

  persons.insert(person("Boris", 31));
  persons.insert(person("Anton", 35));
  persons.insert(person("Caesar", 25));

  std::cout << BOOST_VERSION << std::endl;

  person_multi::iterator it = persons.find("Boris");
  persons.modify(it, set_age);

  const person_multi::nth_index<1>::type &age_index = persons.get<1>();
  std::cout << age_index.count(32) << std::endl;
}