Question 1

What programming language is primarily used in SwiftUI development?

Accepted Answer

Swift

Answer

C++

Answer

Java

Answer

Python

Question 2

What is the preview feature in SwiftUI used for?

Accepted Answer

Displaying real-time changes to the UI

Answer

Testing backend functionality

Answer

Sharing code with others

Answer

Running automated tests

Question 3

What is the main purpose of a VStack in SwiftUI?

Accepted Answer

To arrange views vertically

Answer

To create animations for views

Answer

To manage data fetching from a remote server

Answer

To apply styling to user interface elements

Question 4

Which keyword is used to create a constant variable in SwiftUI?

Accepted Answer

let

Answer

var

Answer

mutable

Answer

constant

Question 5

In SwiftUI, how can you declare a variable that can be modified within a View?

Accepted Answer

@State

Answer

@Binding

Answer

@EnvironmentObject

Answer

@ObservedObject

Question 6

How do you initialize a variable with a default value in SwiftUI?

Accepted Answer

var count = 0

Answer

var total: Double = 100

Answer

let amount = 1

Answer

let name: String

Question 7

In SwiftUI, which data type would you use to store textual information in a variable?

Accepted Answer

String

Answer

Bool

Answer

Double

Answer

Int

Question 8

What is the purpose of the SecureField view in SwiftUI?

Accepted Answer

To create a secure text input field for sensitive information like passwords.

Answer

To disable user input in a text field.

Answer

To format numerical input in a text field.

Answer

To display text that cannot be edited.

Question 9

Which property is used to bind a SwiftUI textfield to a variable in Swift?

Accepted Answer

.textField(text: $variable)

Answer

.bindText(variable)

Answer

.text($variable)

Answer

.bindTextField(variable)

Question 10

How can you customize the appearance of the text entered in a SwiftUI textfield?

Accepted Answer

By applying modifiers such as font(), foregroundColor(), and padding() to the textfield.

Answer

By nesting the textfield within a VStack and applying styling to the VStack.

Answer

By setting the textStyle() property of the textfield to a custom font style.

Answer

By using the textColor() modifier directly on the textfield.

Question 11

What SwiftUI shape can be used to create an ellipse?

Accepted Answer

Ellipse

Answer

Triangle

Answer

Circle

Answer

Rectangle

Question 12

Which SwiftUI shape can be used to create a rectangle?

Accepted Answer

Rectangle

Answer

Ellipse

Answer

Triangle

Answer

Circle

Question 13

Which SwiftUI shape can be used to create a capsule?

Accepted Answer

Capsule

Answer

Ellipse

Answer

Rectangle

Answer

Circle

Question 14

Which SwiftUI function is used to stack views horizontally or vertically?

Accepted Answer

HStack/VStack

Answer

ZStack

Answer

Form

Answer

List

Question 15

How can you specify the return type of a function in SwiftUI?

Accepted Answer

By placing the return type after the closing parenthesis and before the opening curly brace

Answer

By using the 'result' keyword

Answer

By declaring a separate return type function

Answer

By adding a colon after the function name

Question 16

In SwiftUI, what is the keyword used to define a function that returns a value?

Accepted Answer

func

Answer

struct

Answer

var

Answer

let

Question 17

What does the '->' symbol indicate in a SwiftUI function declaration?

Accepted Answer

It indicates the return type of the function

Answer

It is an invalid symbol in SwiftUI

Answer

It separates parameters in a function

Answer

It is used for commenting out code

Question 18

What is the purpose of a return statement in a SwiftUI function?

Accepted Answer

To provide the output or result of the function back to the caller

Answer

To terminate the function immediately

Answer

To access the function's parameters

Answer

To add a comment within the function

Question 19

What is the syntax for declaring a function in SwiftUI that takes parameters and returns a value?

Accepted Answer

func functionName(parameter1: type, parameter2: type) -> ReturnType

Answer

functionName(parameter1: type, parameter2: type) -> ReturnType func

Answer

func functionName -> ReturnType(parameter1: type, parameter2: type)

Answer

func functionName(parameter1: type, parameter2: type) => ReturnType

Question 20

How can you capture the return value of a function in SwiftUI for later use?

Accepted Answer

By assigning the function call to a variable or constant

Answer

By appending the return value to an array

Answer

By defining a separate function for capturing return values

Answer

By using a switch statement

Question 21

In SwiftUI, how would you calculate the average of three numbers, 8, 15, and 22?

Accepted Answer

let average = (8 + 15 + 22) / 3

Answer

let average = 8 + 15 + 22 / 3

Answer

let average = (8 + 15) / 22

Answer

let average = 8 * 15 * 22

Question 22

In SwiftUI, to calculate the modulus (remainder) after dividing 25 by 4, which code snippet would you use?

Accepted Answer

let modulus = 25 % 4

Answer

let modulus = 25 * 4

Answer

let modulus = 25 / 4

Answer

let modulus = 25 - 4

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