[Boost-users] [serialization] how can load the nth element using binary_archive?

Hello, Everyone: boost::serialization is a cool library. I use it in my project. I encounter a problem now. I serialized a array of objects to file as following: std::ofstream ofs(filename, std::ios_base::binary); boost::binary_oarchive oar(ofs); oar << obj[0] << obj[1] << ... << obj[n-1]; Now I want to load the obj[i] (i>=0 && i> wb2_r; //failed with exception input_stream_error. return 0; } Any idea is appreciated!