Can you help solve this I have tried to put ! but no use

 (snapShot.hasData &&  snapShot.data! < 10)? '${snapShot.data}' ??'' : 'Future in Flutter'),

 (snapShot.hasData &&  snapShot!.data < 10)? '${snapShot.data}' ??'' : 'Future in Flutter'),

CodePudding user response：

Please try this:

(snapShot.data ?? 0) < 10

CodePudding user response：

Solved the problem

void main() {
  runApp(const MyApp());
}

class MyApp extends StatelessWidget {
  const MyApp({Key? key}) : super(key: key);

  info(String a) {
    return a;
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      debugShowCheckedModeBanner: false,
      home: StreamBuilder<int>(
        stream: Stream.periodic(Duration(seconds: 1) , (a)=> a) ,
        builder: (context, snapShot) {
          return Scaffold(
            appBar: AppBar(
              title: Text(
                  (snapShot.hasData &&  (snapShot.data ?? 0) < 10)? '${snapShot.data}' : 'Future in Flutter'),
            ),
            body: Center(
              child: snapShot.connectionState == ConnectionState.waiting
                  ? const CircularProgressIndicator()
                  : const Text('Done!'),
            ),
          );
        },
      ),
    );
  }
}```