save method Null safety

void save(
  1. {required String name,
  2. required String subject}
)

save the list

Implementation

static void save({
  required String name,
  required String subject,
}) async {
  final pref = await SharedPreferences.getInstance();

  /// get already stored list of papers for the subject
  final myPapers = pref.getStringList(subject);

  final List<String> myList = myPapers ?? [];
  myList.add(name);

  ///save the list of papers
  pref.setStringList(subject, myList);
}