when<TResult extends Object?> method

@optionalTypeArgs TResult when<TResult extends Object?>(TResult $default(int id, @JsonKey.new(name: 'commercial_id') int commercialId, String name, String description, List<String> images, @JsonKey.new(name: 'min_number_slot_reserved') int minNumberSlotReserved, @JsonKey.new(name: 'max_number_slot_reserved') int maxNumberSlotReserved, List<IsibookExtraPrice> price, @JsonKey.new(name: 'created_at') @TimestampConverter() Jiffy createdAt, @JsonKey.new(name: 'updated_at') @TimestampConverter() Jiffy updatedAt, @JsonKey.new(name: 'deleted_at') @TimestampConverter() Jiffy? deletedAt, @JsonKey.new(name: 'images_url') List<String> imagesUrl,))

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(
          int id,
          @JsonKey(name: 'commercial_id') int commercialId,
          String name,
          String description,
          List<String> images,
          @JsonKey(name: 'min_number_slot_reserved')
          int minNumberSlotReserved,
          @JsonKey(name: 'max_number_slot_reserved')
          int maxNumberSlotReserved,
          List<IsibookExtraPrice> price,
          @JsonKey(name: 'created_at') @TimestampConverter() Jiffy createdAt,
          @JsonKey(name: 'updated_at') @TimestampConverter() Jiffy updatedAt,
          @JsonKey(name: 'deleted_at') @TimestampConverter() Jiffy? deletedAt,
          @JsonKey(name: 'images_url') List<String> imagesUrl)
      $default,
) {
  final _that = this;
  switch (_that) {
    case _IsibookReservationExtra():
      return $default(
          _that.id,
          _that.commercialId,
          _that.name,
          _that.description,
          _that.images,
          _that.minNumberSlotReserved,
          _that.maxNumberSlotReserved,
          _that.price,
          _that.createdAt,
          _that.updatedAt,
          _that.deletedAt,
          _that.imagesUrl);
  }
}