Nested classes in Dart can be library private if an underscore is added at the beginning of the name.

False

True

The following code compiles successfully.

abstract class Example<T> {}
class SubExample<A> extends Example<A> {}

False

True

The MaterialApp and CupertinoApp widget have the onRouteGenerated callback to initialize routes.

False

True

Without a ChangeNotifierProvider, children won't be able to listen for changes.

False

True

An object has to override operator== in order to be able to be used in a switch statement.

False

True

Assertions work in profile, debug and release mode.

False

True

The event loop splits async functions into multiple pieces to not block the execution.

False

True

The rootBundle object should be used inside stateful and stateless widgets.

False

True

A complete comparison logic requires the definition of operator==(), hashCode and compareTo().

False

True

If the superclass has a default constructor, the compiler automatically calls super() in the subclass default constructor.

False

True

The ChangeNotifier class is part of the 'provider' package.

False

True

The following code throws an exception.

int? nullable;
int notNullable = nullable!;

False

True

A TextEditingController must always be disposed.

False

True

When using implements, every method must be overridden.

False

True

This code prints "Hello" only when status = null.

print(status ?? "Hello")

False

True

OrientationBuilder is used to determine the orientation of the screen.

False

True

The embedder, written in C++, is the real core of Flutter.

False

True

The following code compiles successfully.

class Super {
  int a;
  Super(this.a);
}

class Sub extends Super {
  int b;
  Sub(int b) : super(b*b), this.b = b;
}

False

True

The following code compiles successfully.

class Example {
  Example._();
}

False

True

LayoutBuilder is used to create responsive UIs.

False

True

This is a valid way of defining named parameters.

void test({int a = 0}, int b) {}

False

True

Thanks to constant constructors, the build() method of the widget is executed only once.

False

True

If B doesn't implement every abstract method of the superclass A, then B must be abstract as well.

False

True

The await enableFlutterDriverExtension(); method must be called before runApp(); when performing integration testing.

False

True

The AsyncSnapshot<T>.data property is nullable.

False

True