iOS Development SwiftUI Framework

Question 1

What is SwiftUI's primary programming paradigm?

Accepted Answer

Declarative UI

Answer

Imperative UI

Answer

Event-driven UI

Answer

Object-oriented UI

Question 2

Which SwiftUI property wrapper stores state local to a view?

Accepted Answer

@State

Answer

@Binding

Answer

@ObservedObject

Answer

@Environment

Question 3

What does `@Binding` do in SwiftUI?

Accepted Answer

Creates a two-way connection to a state value owned by another view

Answer

Observes changes in an external object

Answer

Reads a value from the environment

Answer

Persists a value across app launches

Question 4

Which SwiftUI container stacks views vertically?

Accepted Answer

VStack

Answer

HStack

Answer

ZStack

Answer

Group

Question 5

What protocol must all SwiftUI views conform to?

Accepted Answer

View

Answer

UIView

Answer

Identifiable

Answer

ObservableObject

Question 6

What is the SwiftUI preview feature used for?

Accepted Answer

Rendering a live view of a component inside Xcode without running the full app

Answer

Generating screenshots for the App Store

Answer

Simulating network responses

Answer

Testing view layouts on physical devices