Re: [Boost-users] serialization std::map

compiled for me on msvc 7.1 Robert Ramey Adam Szeliga wrote:

Why I can not input from archive std::map ?

line: inputArchive >> inputContainer causes compile error:

Thanks Adam

#include <string> #include <iostream> #include <fstream> #include <sstream> #include <map> #include #include #include #include #include #include #include #include #include #include #include

class A { public: A() {}; A(std::string const & s): s(s) { }

virtual ~A() {};

private: std::string s;

friend std::ostream & operator<<(std::ostream & os, A const & a);

friend class boost::serialization::access; template<class Archive> void serialize(Archive & archive, unsigned int const version) { archive & s; } };

std::ostream & operator<<(std::ostream & os, A const & a) { return os << a.s; }

typedef std::map Container;

BOOST_CLASS_TRACKING(Container, boost::serialization::track_never);

std::ostream & operator<<(std::ostream & os, Container const & container) { Container::const_iterator end = container.end(); for (Container::const_iterator i = container.begin(); i != end; ++i) { os << "(" << i->first << "," << *i->second << ")" << std::endl; } return os; }

int _tmain(int argc, _TCHAR* argv[]) { std::cout << "serialization map test starts" << std::endl;

Container outputContainer;

outputContainer.insert(std::make_pair(1, new A("one"))); outputContainer.insert(std::make_pair(4, new A("four"))); outputContainer.insert(std::make_pair(2, new A("two")));

std::cout << outputContainer << std::endl;

{ std::wofstream outputFile("data.txt"); boost::archive::text_woarchive outputArchive(outputFile);

outputArchive << outputContainer; }

std::cout << "---------------------------" << std::endl;

Container inputContainer; { std::wifstream inputFile("data.txt"); boost::archive::text_wiarchive inputArchive(inputFile);

inputArchive >> inputContainer; // this line causes compile error }

std::cout << inputContainer << std::endl;

std::cout << "serialization map test ends" << std::endl;

return 0; }