pop method

Future<int> pop()

Implementation

Future<int> pop() async {
  if (_currentList.isEmpty && !closed) {
    // wait until data is available (busy waiting... how sad...)
    while (await Future<bool>.delayed(
            const Duration(milliseconds: 100), () => _currentList.isEmpty) &&
        !closed) {}
  }
  return _currentList.removeAt(0);
}