A Dart array is declared as follows:

int arr = new int[10];

False

True

String interpolation in Dart calls the toString() method.

False

True

The new keyword is optional.

False

True

How do you properly convert num? value into a non-nullable int?

num? value = 5;
int other = ...;

int other = value as int;

int other = value!;

int other = value ?? value!;

Cubit is used in the internals of Bloc.

False

True

Dart is and OOP and garbage collected programming language.

False

True

Which is the correct variant?.

AppLocalization.of(this)?.locale.languageCode

AppLocalization.of(this).locale?.languageCode

AppLocalization.of(this)?.locale?.languageCode

Flutter AOT compiles the bridge code into native ARM libraries.

False

True

A minimal, valid comparison logic requires the definition of operator==() and compareTo().

False

True

The widget tree is the only kind of tree maintained by Flutter.

False

True

The following code throws an exception.

int? nullable;
int notNullable = nullable!;

False

True

Thanks to the dart2native command line tool, there's the possibility to compile native Flutter apps.

False

True

In Dart constructors can be made private by using the underscore in front of the name.

class Example {
  _Example();
}

False

True

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

False

True

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

False

True

Canceling a subscription from a StreamController<T> requires awaiting.

await subscription.cancel();

False

True

The following code compiles successfully.

class Example {
  late final int? a;
  Example(this.a);
}

False

True

You can use extends with one or more classes.

False

True

The ReplayBloc (from 'flutter_bloc') class exposes overrides for undo and redo operations.

False

True

Using setState() and InheritedWidget together is good because the developer has control on widget rebuilds in the subtree.

False

True

The following code compiles successfully.

String? name;
String? first = name?[0];

False

True

The following ways to initialize a Set<T> are equal.

Set set = {};
final set = {};
var set = {};
final set = {};
var set = {};

False

True

Flutter AOT compiles the Dart code into native ARM libraries.

False

True

The Localizations.of<T>() method returns a nullable value.

False

True

A native app uses OEM widgets provided by the operating system.

False

True