RobersonLuo

### Describe the feature you would like to see added ***Question***： When the the dataset is to large, I want the **Table** or **TreeTable** to support Panination/Filtering with the help...

New Component 'Pivot Table' Request

2

Please implement a new component **[Pivot Table]** to visualize data? It's really needed in enterprise. thanks!

示例代码不支持 Flutter 2 (Dart 2.12.0)，给初学者造成很大障碍！

3

本书非常好，可是示例代码不支持 Flutter 2 (Dart 2.12.0)。 对于代码中出现的Null-Safety等问题，给像我这样的初学者造成很大障碍。 恳请作者升级一下，并提供章节示例代码下载地址。 万分感谢！！！