when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. Asset? asset,
    2. @TimestampOrNullConverter() DateTime? inTransitAt,
    3. @TimestampOrNullConverter() DateTime? waitingToDispatchAt,
    4. @TimestampOrNullConverter() DateTime? deliveredAt,
    5. @TimestampOrNullConverter() DateTime? unloadingOperationAt,
    6. @TimestampOrNullConverter() DateTime? readyToOperateAt,
    7. @TimestampOrNullConverter() DateTime? eta,
    )
)

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs TResult when<TResult extends Object?>(TResult Function( Asset? asset, @TimestampOrNullConverter()  DateTime? inTransitAt, @TimestampOrNullConverter()  DateTime? waitingToDispatchAt, @TimestampOrNullConverter()  DateTime? deliveredAt, @TimestampOrNullConverter()  DateTime? unloadingOperationAt, @TimestampOrNullConverter()  DateTime? readyToOperateAt, @TimestampOrNullConverter()  DateTime? eta)  $default,) {final _that = this;
switch (_that) {
case _AtsOperationStatuses():
return $default(_that.asset,_that.inTransitAt,_that.waitingToDispatchAt,_that.deliveredAt,_that.unloadingOperationAt,_that.readyToOperateAt,_that.eta);case _:
  throw StateError('Unexpected subclass');

}
}