sublist method Null safety

  1. @override
Int32List sublist(
  1. int start,
  2. [int? end]
)
inherited

Returns a new list containing the elements between start and end.

The new list is a List<E> containing the elements of this list at positions greater than or equal to start and less than end in the same order as they occur in this list.

final colors = <String>['red', 'green', 'blue', 'orange', 'pink'];
print(colors.sublist(1, 3)); // [green, blue]

If end is omitted, it defaults to the length of this list.

final colors = <String>['red', 'green', 'blue', 'orange', 'pink'];
print(colors.sublist(3)); // [orange, pink]

The start and end positions must satisfy the relations 0 ≤ start ≤ end ≤ length. If end is equal to start, then the returned list is empty.

Implementation

@override
L sublist(int start, [int? end]) {
  var length = this.length;
  var nonNullEnd = RangeError.checkValidRange(start, end, length);

  var list = _createList(nonNullEnd - start);
  _writeToList(list, start, nonNullEnd);
  return list;
}