fd_ostream class ¶The file_ostream class supports output to a file descriptor. Its
type is ‘fd_ostream_t’. It is a subclass of ‘ostream_t’ that
adds no methods.
It can be instantiated through this function:
fd_ostream_t fd_ostream_create (int fd, const char *filename, bool buffered) ¶Creates an output stream referring to the file descriptor fd.
filename is used only for error messages.
Note: The resulting stream must be closed before fd can be
closed.