//[ guide_histogram_serialization

#include <boost/histogram.hpp>
#include <boost/histogram/serialization.hpp> // includes serialization code
#include <boost/archive/text_iarchive.hpp>
#include <boost/archive/text_oarchive.hpp>
#include <sstream>

namespace bh = boost::histogram;

int main() {
    auto a = bh::make_static_histogram(bh::axis::regular<>(3, -1, 1, "r"),
                                       bh::axis::integer<>(0, 2, "i"));
    a(0.5, 1);

    std::string buf; // holds persistent representation

    // store histogram
    {
      std::ostringstream os;
      boost::archive::text_oarchive oa(os);
      oa << a;
      buf = os.str();
    }

    auto b = decltype(a)(); // create a default-constructed second histogram

    std::cout << "before restore " << (a == b) << std::endl;
    // prints: before restore 0

    // load histogram
    {
      std::istringstream is(buf);
      boost::archive::text_iarchive ia(is);
      ia >> b;
    }

    std::cout << "after restore " << (a == b) << std::endl;
    // prints: after restore 1
}

//]