Re: [Boost-users] [Serialization] Serializing boost::tuples

From: Christian Henning (chhenning_at_[hidden])
Date: 2006-05-26 09:32:57

Thanks Robert, here is my proof of concept for a triple ( tuple with 3
entries ). Any comments? I'm on MSVC 7.1.

namespace boost {
namespace serialization {

// triple
template<class Archive, class F, class S, class T>
inline void serialize(
    Archive & ar,
    boost::tuple<F, S, T>& t,
    const unsigned int /* file_version */
)
{
    ar & boost::serialization::make_nvp("first" , t.get<0>()  );
    ar & boost::serialization::make_nvp("second", t.get<1>()  );
    ar & boost::serialization::make_nvp("third" , t.get<2>()  );
}

} // serialization
} // namespace boost

using namespace std;
using namespace boost;

typedef tuple< string, string, string > Key;
typedef map< Key, int > MyMap;

void print( pair<Key, int> oEntry )
{
   std::cout << oEntry.first;

   std::cout << " - " << oEntry.second << std::endl;
}

int _tmain(int argc, _TCHAR* argv[])
{
   MyMap aMap;

   aMap[ make_tuple( "aa", "bb", "cc" ) ] = 90;

   {
      const MyMap& caMap = aMap;
      ofstream ofs( "Settings.txt" );
      boost::archive::text_oarchive oa( ofs );

      oa & caMap;
   }

   MyMap aMap_2;
   {
      ifstream ifs( "Settings.txt" );
      boost::archive::text_iarchive ia( ifs );

      ia & aMap_2;
   }

   for_each( aMap_2.begin(), aMap_2.end(), print );

        return 0;
}

Regards,
Christian