Header <fstream> implementation status Reference Implementation : Cannot implement with language itself. Need compiler support. Used C++ N STL : Partially implemented with C++ N : Fully implemented with C++ N : Not yet implemented Features Standard Implemented in Classes basic_filebuf basic_ifstream basic_ofstream basic_fstream Functions ss::swap(ss::basic_filebuf) ss::swap(ss::basic_ifstream) ss::swap(ss::basic_ofstream) ss::swap(ss::basic_fstream)