Method bytesLeft

src/fl/stl/fstream.h:190–190

    bool valid() const { return is_open(); }
    fl::size_t pos() const { return mHandle ? mHandle->pos() : 0; }
    fl::size_t bytesLeft() const { return bytes_left(); }
    bool seek(fl::size_t p) {
        seekg(p, ios::seekdir::beg);
        return good();