selectAtIndex method

List<T> selectAtIndex(
  1. int index
)

选择第index个元素

Implementation

List<T> selectAtIndex(int index) {
  final target = getOrNull(index);
  if (target == null) {
    L.w('索引 $index 处没有元素!');
  } else {
    target.isSelected = true;
  }
  return this;
}