maybeWhen<TResult extends Object?> method

  1. @optionalTypeArgs
TResult maybeWhen<TResult extends Object?>(
  1. TResult $default(
    1. String type,
    2. String data
    )?, {
  2. TResult arr(
    1. String type,
    2. List<String> data
    )?,
  3. TResult any(
    1. String type,
    2. dynamic data
    )?,
  4. required TResult orElse(),
})

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

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

Implementation

@optionalTypeArgs
TResult maybeWhen<TResult extends Object?>(
  TResult Function(@JsonKey(name: 'type') String type,
          @JsonKey(name: 'data') String data)?
      $default, {
  TResult Function(@JsonKey(name: 'type') String type,
          @JsonKey(name: 'data') List<String> data)?
      arr,
  TResult Function(@JsonKey(name: 'type') String type,
          @JsonKey(name: 'data') dynamic data)?
      any,
  required TResult orElse(),
}) {
  final _that = this;
  switch (_that) {
    case PublicSendModelDefault() when $default != null:
      return $default(_that.type, _that.data);
    case PublicSendModelArr() when arr != null:
      return arr(_that.type, _that.data);
    case PublicSendModelAny() when any != null:
      return any(_that.type, _that.data);
    case _:
      return orElse();
  }
}