Among the default traits for primitive types is no tracking. So the best way to handle your situation is to use BOOST_STRONG_TYPEDEF to assign a special type to your special kind of integer. Then specify serialization functions for that type. Something like BOOST_STRONG_TYPEDEF(int, my_int) template<class Archive> serialize(Archive &ar, my_int & i, const unsigned int version){ ar & i; } vector v; ar & v; Hope this is helpful. Robert Ramey Cheok Yan Cheng wrote:

hello,

i have an int pointer, which pointer to the starting address of an array. currently, i need to serialize the array elements one by one, at the same time serialize the size of the array too.

i try to serialize the dynamic allocated array, just like what i did on vector, but fail.

vector<int> v; ar & vector; /* no problem. */

int *i = new int[10]; ar & i; /* compile error. */

i was understand that the serialization library had no idea on the size of dynamic allocated array either during run-time or compiled time.

i just want to know whether there is any better way to serialize on the above mentioned data?

here is the error i get from vc++ 2003.

C:\Boost\include\boost-1_33_1\boost\serialization\access.hpp(109): error C2228: left of '.serialize' must have class/struct/union type

the below are my full source code. thanks!

#include <fstream>

// include headers that implement a archive in simple text format #include #include

///////////////////////////////////////////////////////////// // gps coordinate // // illustrates serialization for a simple type // class gps_position { private: friend class boost::serialization::access; // When the class Archive corresponds to an output archive, the // & operator is defined similar to <<. Likewise, when the class Archive // is a type of input archive the & operator is defined similar to >>. template<class Archive> void serialize(Archive & ar, const unsigned int version) { ar & degrees; ar & minutes; ar & seconds; ar & data; } int degrees; int minutes; float seconds; int* data;

public: gps_position(){}; gps_position(int d, int m, float s) : degrees(d), minutes(m), seconds(s) {data = new int[5];} };

int main() { // create and open a character archive for output std::ofstream ofs("filename");

// create class instance const gps_position g(35, 59, 24.567f);

// 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 newg; { // create and open an archive for input std::ifstream ifs("filename", std::ios::binary); boost::archive::text_iarchive ia(ifs); // read class state from archive ia >> newg; // archive and stream closed when destructors are called } return 0; }

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