flutter-构造方法给数组list默认空值

1 class NewstStyle extends StatelessWidget {
2   final List<DkCenterUpload> upload;
3   const NewstStyle({
4     Key key,
5     this.upload: const [],
6   }) : super(key: key);

const []

posted @   mingV2020  阅读(1046)  评论(0编辑  收藏  举报
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