回答編集履歴
1
なるべく元のコードを残した実装を追記
test
CHANGED
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@@ -68,7 +68,7 @@
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Future<List<Map<String, dynamic>>> st
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Future<List<Map<String, dynamic>>> staffs; // 取得したデータを保持するための変数
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@@ -78,13 +78,13 @@
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super.initState();
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stuffs = _loadSt
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stuffs = _loadStaffData(); // データ取得開始
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}
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}
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Future<List<Map<String, dynamic>>> _loadSt
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Future<List<Map<String, dynamic>>> _loadStaffData() async {
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return sampleData; // 実際はDBからデータを取得して返す
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@@ -110,7 +110,7 @@
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child: FutureBuilder<List<Map<String, dynamic>>>(
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future: st
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future: staffs,
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builder: (context, snapshot) {
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@@ -118,7 +118,7 @@
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if (!snapshot.hasData) {
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return St
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return StaffListPlaceHolder();
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}
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@@ -148,7 +148,7 @@
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// データが取得できるまでのプレースホルダー。
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class St
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class StaffListPlaceHolder extends StatelessWidget {
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@override
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@@ -191,3 +191,345 @@
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あとはこの辺のパッケージを使うと見た目も良い感じになるかもしれません。
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* [https://pub.dev/packages/shimmer](https://pub.dev/packages/shimmer)
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---
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**追記**
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上記の回答は手元で考えてみたのをそのまま貼ったので、元のコードから離れすぎてて、あまり参考にならないかもしれません。
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なるべく最小限の修正 + setStateだけで、それっぽいコード書いたので、こっち参考にしてください。
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```dart
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class ListViewHorizonCast extends StatefulWidget {
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@override
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_ListViewHorizonCastState createState() => _ListViewHorizonCastState();
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}
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class _ListViewHorizonCastState extends State<ListViewHorizonCast> {
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List<Map<String, dynamic>> listItems;
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@override
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void didChangeDependencies() {
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super.didChangeDependencies();
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if (listItems == null) {
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_loadData();
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}
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}
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Future<void> _loadData() async {
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// データ取得に1秒かかった想定
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await Future.delayed(Duration(seconds: 1));
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setState(() {
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listItems = [
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{
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'name': '山本太郎',
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'img': '../assets/images/sample.jpg',
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'comment': 'ここに一言入ります',
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'age': '22' + '歳',
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},
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{
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'name': '山本花子',
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'img': '../assets/images/sample.jpg',
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'comment': 'ここに一言入ります',
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'age': '22' + '歳',
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},
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{
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'name': '田中花子',
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'img': '../assets/images/sample.jpg',
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'comment': 'ここに一言入ります',
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'age': '22' + '歳',
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},
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];
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});
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}
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@override
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Widget build(BuildContext context) {
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return Container(
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color: Colors.white,
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margin: EdgeInsets.only(top: 10.0),
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padding: EdgeInsets.symmetric(
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horizontal: Settings().sidePadding(),
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vertical: 20,
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),
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child: Column(
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children: <Widget>[
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//タイトル
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Container(
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width: double.infinity,
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margin: EdgeInsets.only(top: 0.0, bottom: 0.0),
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height: 30,
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child: Text(
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'スタッフ一覧',
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style: Settings.fontTitleStyle,
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textAlign: TextAlign.left,
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),
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),
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//カードリスト
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Container(
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height: 200,
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padding: EdgeInsets.only(bottom: 15.0),
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child: ListView.builder(
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scrollDirection: Axis.horizontal,
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itemCount: listItems?.length ?? 3,
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itemBuilder: (context, index) {
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//カード
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return FlatButton(
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child: SizedBox(
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width: 150,
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child: Card(
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child: Stack(
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fit: StackFit.expand,
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children: <Widget>[
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listItems == null
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//グレーアウト
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? Container(color: Colors.grey[200])
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//スタッフの写真
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: Container(
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child: Container(
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decoration: BoxDecoration(
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image: DecorationImage(
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image: AssetImage(
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'../assets/images/sample.jpg',
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),
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fit: BoxFit.cover,
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),
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),
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child: Container(
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decoration: BoxDecoration(
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gradient: LinearGradient(
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begin: Alignment.topCenter,
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end: Alignment.bottomCenter,
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stops: [0.5, 0.75, 0.95],
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colors: [
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Colors.black12,
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Colors.black54,
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Colors.black87,
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],
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),
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),
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),
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),
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//スタッフの名前
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Positioned(
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bottom: 25.0,
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left: 5.0,
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child: Text(
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listItems != null ? listItems[index]['name'] : '',
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style: TextStyle(
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color: Colors.white,
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fontSize: 14,
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fontWeight: FontWeight.bold,
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),
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),
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),
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//スタッフの一言
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Positioned(
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bottom: 8.0,
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left: 5.0,
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child: Text(
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listItems != null
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? listItems[index]['comment']
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: '',
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style: TextStyle(
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color: Colors.white70,
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fontSize: 11,
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),
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484
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),
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486
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487
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),
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488
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489
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],
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490
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491
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),
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492
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493
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),
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494
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495
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),
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496
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onPressed: () {
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498
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499
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if (listItems != null) {
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Navigator.push(
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context,
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504
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505
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MaterialPageRoute(
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builder: (context) => CastProfileDetail(),
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),
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510
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);
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}
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},
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);
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},
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),
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),
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],
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),
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528
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);
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530
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531
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}
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532
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533
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}
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534
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535
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```
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