The Theme widget can only be used inside MaterialApp or CupertinoApp.

False

True

The 'test' package is a dev dependency.

False

True

A HydratedBloc (from 'flutter_bloc') cannot support undo and redo actions.

False

True

Hot reload doesn't work when static fields are changed.

False

True

The following code compiles successfully.

class Example {
  String? _name;
  Example.named(this._name);
}

False

True

A Firestore transaction is a secure way to read data from a collection.

False

True

The following code compiles successfully.

mixin A {}
mixin B {}

class C with A, B {}

False

True

LayoutBuilder is used to create responsive UIs.

False

True

Dependency Injection is very important, especially in terms of maintenance, because it removes weak dependencies between classes.

False

True

setState() cannot be marked as async.

False

True

Good practice. You should avoid, in most of the cases, the initialization with var rather than writing the type explicitly.

False

True

A frame is said to be janky if it’s taken more than 60ms to complete

False

True

A Scaffold lies inside an AppBar.

False

True

The validator callback of a TextFormField cannot return null.

False

True

Functions marked with async automatically convert their return type to a Future<T>.

False

True

This is a smart casts .

if (apple is Fruit) {
  (grapes as Fruit).color = "Green";
}

False

True

Which keyword is used to emit data on a stream?

yield

yield*

sync*

A StatefulWidget can have a constant constructor, even if its state can change.

False

True

This is a valid way of defining named parameters.

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

False

True

A GlobalKey<Form> is required in order to validate form fields.

False

True

Dart doesn't have the interface keyword.

False

True

HTTP fetching calls are generally handled inside the build().

False

True

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

False

True

Calling context.read<T>() class (from 'provider') in the build method of a widget throws an exception.

False

True

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

False

True