kungfuslippers

import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';

void main() {
  runApp(MyApp(
      itemsA: List<String>.generate(250, (i) => "Item $i"),
      itemsB: List<String>.generate(250, (i) => "Item $i")));
}

class MyApp extends StatefulWidget {