ListSignal re-render count?

[Panca6]

So, basically i wonder what happen when i have a list of signal int, then i changed 1 of the element to desired value, is the whole ListView items get re-render or just the one that i changed, i might be wrong but from what i observe the whole List seems to be re-render, here's the minimal code :

final list = ListSignal([0, 0, 0]);

class MainApp extends StatelessWidget {
  const MainApp({super.key});

  @override
  Widget build(BuildContext context) {
    // final store = storeRef.of(context);
    return MaterialApp(
      home: Scaffold(
        body: Watch(
          (context) {
            return ListView.builder(
              itemCount: list.length,
              itemBuilder: (context, index) {
                return InkWell(
                  onTap: () => list[index] += 1,
                  child: SizedBox(
                    height: 64,
                    child: Card(
                      child: Center(
                        child: Text('${list[index]}'),
                      ),
                    ),
                  ),
                );
              },
            );
          },
        ),
      ),
    );
  }
}

here the result after 5 click on one of three btn :

is this working as intended?

[rodydavis]

Yep this is working as intended!

You can have a watch inside the item builder itself to watch any signals for just the item too.

[Panca6]

Thanks for explaining that.

[rodydavis]

Well you still need a watch for the list but I would create a computed signal to track the length separately