grow method

dynamic grow ()

Implementation

grow() {
  if (_writePos == _buf.length - 1) {
    var newBuf = Uint8List(_buf.length * 2);
    _buf.asMap().forEach((k, v) => newBuf[k] = v);
    _buf = newBuf;
    _view = ByteData.view(_buf.buffer);
  }
}