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 []
flutter-构造方法给数组list默认空值
原文：https://www.cnblogs.com/mingv/p/14311447.html
