Свойство hasNext

bool hasNext

Реализация

bool get hasNext {
  if (_state == _NOT_MOVED_YET) _move();
  return _state == _HAS_NEXT_AND_NEXT_IN_CURRENT;
}

© 2012 the Dart project authors
Licensed under the BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.18.5/dart-collection/HasNextIterator/hasNext.html