fold method

@override Result<Object> fold(@noFutures Result<Object>? onOk(Ok<T> ok), @noFutures Result<Object>? onErr(Err<T> err))

Folds the two cases of this Result into a single new Result.

Implementation

@override
@pragma('vm:prefer-inline')
Result<Object> fold(
  @noFutures Result<Object>? Function(Ok<T> ok) onOk,
  @noFutures Result<Object>? Function(Err<T> err) onErr,
) {
  try {
    return onErr(this) ?? this;
  } catch (error, stackTrace) {
    return Err(error, stackTrace: stackTrace);
  }
}