completeOnceWith method

Future<bool> completeOnceWith(FutureOr<T> fn())

Implementation

Future<bool> completeOnceWith(FutureOr<T> Function() fn) async {
  if (!isCompleted) {
    try {
      return completeOnce(await fn());
    } catch (e) {
      return completeOnceError(e);
    }
  } else {
    return false;
  }
}