summary method

SummaryStatics summary ()

Implementation

SummaryStatics summary() {
  CardsSchedule s = _getCardsSchedule();
  SummaryStatics summary = SummaryStatics(
      later: s.later.length,
      due: s.due.length,
      overdue: s.overdue.length,
      learning: s.learning.length);

  return summary;
}