sort list with nulls at the end in dart

main.dart

void main() {
  print("Current list");
  var l = [1,5,2,null,0];
  print(l);
  
  print("Sorted List");
  l.sort((a, b) {
    int result;
    if (a == null) {
      result = 1;
    } else if (b == null) {
      result = -1;
    } else {
      // Ascending Order
      result = a.compareTo(b);
    }
    return result;
  });
  print(l);
}