whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. int? id,
    2. ModelTimestamp time,
    3. LocalNotificationRepeatSettings repeat,
    4. String title,
    5. String text,
    6. DynamicMap data,
    )?
)

A variant of when that fallback to returning null

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  TResult? Function(
          int? id,
          ModelTimestamp time,
          LocalNotificationRepeatSettings repeat,
          String title,
          String text,
          DynamicMap data)?
      $default,
) {
  final _that = this;
  switch (_that) {
    case _LocalNotificationScheduleModel() when $default != null:
      return $default(_that.id, _that.time, _that.repeat, _that.title,
          _that.text, _that.data);
    case _:
      return null;
  }
}