[Boost-users] [Serialization] Serialize std::valarray of primitives

Hello, I am new to C++ and thus new to Boost. My goal is to serialize a class containing multiple std::valarrays with primitives as content. The code I wrote to achieve that(minimal example to reproduce):     #include <iostream>     #include <boost/archive/text_oarchive.hpp>     class A {         valarray<int> member_one;         valarray<float> member_two;         friend class boost::serialization::access;         template<class Archive>         void serialize(Archive &ar, const unsigned int version){                 ar & member_one;                 ar & member_two         }     }     int main(int argc, char* argv[]) {         boost::archive::text_oarchive oarchive(cout);         oarchive << p;         return 0;     } When compiling this, the following error is given: error: class std::valarray<int> has no member names serialize I'd appreciate if you could let me know how to correctly serialize said std::valarray. Kind regards, Meik S. ||