unwrapWith method

Future<T> unwrapWith(T alternative)

Unwraps a Future that may contain a null value by providing an alternative value. If the original Future resolves to a non-null value, that value is returned. If it resolves to null, the provided alternative value is returned instead.

Example usage:

void main() {
  Future<int?> nullableValue = fetchDataFromServer();

  nullableValue.unwrapWith(2).then((value) {
    print("Received value: $value");
  }).catchError((error) {
    print("Error occurred: $error");
  });
}

Future<int?> fetchDataFromServer() async {
 await Future.delayed(const Duration(seconds: 2));
 return null;
}

Implementation

Future<T> unwrapWith(T alternative) => then(
  (value) => value != null ? Future<T>.value(value) : Future<T>.value(alternative),
);