I have been struggling with this error for a long time.
The following is my code snippet.
//This is the header file
template<typename TElem>
class ArrayList {
public:
/** An accessible typedef for the elements in the array. */
typedef TElem Elem;
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive & ar, const unsigned int version)
{
ar & ptr_;
ar & size_;
ar & cap_;
}
Elem *ptr_; // the stored or aliased array
index_t size_; // number of active objects
index_t cap_; // allocated size of the array; -1 if alias
};
template <typename TElem>
class gps_position
{
public:
typedef TElem Elem;
friend class boost::serialization::access;
template<class Archive>
void serialize(Archive & ar, const unsigned int version)
{
ar & degrees;
ar & minutes;
ar & seconds;
}
private:
Elem degrees;
index_t minutes;
index_t seconds;
};
// This is the .cc file
#include
#include
#include
#include
#include
#include
#include
#include
#include "arraylist.h"
int main() {
// create and open a character archive for output
std::ofstream ofs("filename");
// create class instance
// gps_position<int> g(35.65, 59, 24.567f);
gps_position<float> g;
// save data to archive
{
boost::archive::text_oarchive oa(ofs);
// write class instance to archive
//oa << g;
// archive and stream closed when destructors are called
}
// ... some time later
restore the class instance to its orginal state
/* gps_position<int> newg;
{
// create and open an archive for input
std::ifstream ifs("filename");
boost::archive::text_iarchive ia(ifs);
// read class state from archive
ia >> newg;
// archive and stream closed when destructors are called
}*/
ArrayList<float> a1;
ArrayList<int> a2;
a1.Init(22);
a2.Init(21);
// a1.Resize(30);
// a1.Resize(12);
// a1.Resize(22);
// a2.Resize(22);
a1[21] = 99.0;
a1[20] = 88.0;
for (index_t i = 0; i < a1.size(); i++) {
a1[i] = i;
a1[i]++;
}
std::ofstream s("test.txt");
{
boost::archive::text_oarchive oa(s);
oa << a1;
}
return 0;
}
The following is the compilation error i get.
In file included from /usr/include/boost/serialization/split_member.hpp:23,
from /usr/include/boost/serialization/nvp.hpp:33,
from /usr/include/boost/serialization/serialization.hpp:17,
from /usr/include/boost/archive/detail/oserializer.hpp:61,
from /usr/include/boost/archive/detail/interface_oarchive.hpp:24,
from /usr/include/boost/archive/detail/common_oarchive.hpp:20,
from /usr/include/boost/archive/basic_text_oarchive.hpp:32,
from /usr/include/boost/archive/text_oarchive.hpp:31,
from demo.cc:4:
/usr/include/boost/serialization/access.hpp: In static member function ‘static void boost::serialization::access::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = float]’:
/usr/include/boost/serialization/serialization.hpp:74: instantiated from ‘void boost::serialization::serialize(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = float]’
/usr/include/boost/serialization/serialization.hpp:133: instantiated from ‘void boost::serialization::serialize_adl(Archive&, T&, unsigned int) [with Archive = boost::archive::text_oarchive, T = float]’
/usr/include/boost/archive/detail/oserializer.hpp:140: instantiated from ‘void boost::archive::detail::oserializer<Archive, T>::save_object_data(boost::archive::detail::basic_oarchive&, const void*) const [with Archive = boost::archive::text_oarchive, T = float]’
demo.cc:105: instantiated from here
/usr/include/boost/serialization/access.hpp:109: error: request for member ‘serialize’ in ‘t’, which is of non-class type ‘float’
Please help me out.
