elementAtOrElse method

E elementAtOrElse(int index, E defaultValue(int index))

Returns an element at the given index or the result of calling the defaultValue function if the index is out of bounds of this collection.

Implementation

E elementAtOrElse(int index, E Function(int index) defaultValue) {
  final iterator = this.iterator;
  var elementIndex = 0;

  while (iterator.moveNext()) {
    if (index == elementIndex) return iterator.current;
    elementIndex++;
  }

  return defaultValue(index);
}