DART

Consumer flutter

return Consumer<CartModel>(
  builder: (context, cart, child) {
    return Text("Total price: ${cart.totalPrice}");
  },
);

consumer in dart

@override
Widget build(BuildContext context) {
  return ChangeNotifierProvider(
    create: (_) => Foo(),
    child: Consumer<Foo>(
      builder: (_, foo, __) => Text(foo.value),
    },
  );
}