How to serialize armadillo's vector

Question

How can I serialize arma::Col? Below are a MWE and the error output.

MWE:

#include 
#i         


        

Answer 1

According to @UKMonkey answer I wrote a working example. Actually for this case there is no need to split serialize tosave and load.

#include 
#include 
//#include 
#include 
#include "armadillo"

namespace mpi = boost::mpi;

typedef arma::Col::fixed<3> cvector;

//BOOST_SERIALIZATION_SPLIT_FREE(cvector)

namespace boost
{   
    namespace serialization
    {
        /*template
        void save(Archive& ar, const cvector& cv, unsigned int)
        {
            std::cout << "saving" << std::endl;
            ar& cv[0];
            ar& cv[1];
            ar& cv[2];
        }
        template
        void load(Archive& ar, cvector& cv, unsigned int)
        {
            std::cout << "loading" << std::endl;
            ar& cv[0];
            ar& cv[1];
            ar& cv[2];
        }*/      
        template
        inlide void serialize(Archive& ar, cvector& cv, unsigned int)
        {
            ar& cv[0];
            ar& cv[1];
            ar& cv[2];
        }
    }
} 

struct S
{
    int i;
    cvector c;

    friend class boost::serialization::access;

    template
    void serialize(Archive& ar, const unsigned int) 
    {
        ar& i;
        ar& c;
    }
};

int main()
{
    mpi::environment env;
    mpi::communicator world;

    S s;

    if (world.rank() == 0)
    {
        s.i = 3;
        s.c[0] = 2.;
        s.c[1] = 4.;
        world.send(1, 0, s);
    }
    else
    {
        world.recv(0, 0, s);
        std::cout << s.i << std::endl;
        std::cout << s.c[0] << std::endl;
        std::cout << s.c[1] << std::endl;
    }

    return 0;
}