getOne method

Future<T?> getOne(
  1. bool test(
    1. T value
    ), {
  2. int? parentId,
})

Get One in Box<T>

Implementation

Future<T?> getOne(bool Function(T value) test, {int? parentId}) async {
  final list = await getAll(parentId: parentId);
  final index = list.indexWhere(test);
  if (index == -1) return null;
  return list[index];
}