28 explicit fstream(
const char *filepath,
29 std::ios_base::openmode mode = ios_base::in | ios_base::out);
30 explicit fstream(
const std::string &filepath,
31 std::ios_base::openmode mode = ios_base::in | ios_base::out);
33 void open(
StringRefNull filepath, ios_base::openmode mode = ios_base::in | ios_base::out);