SwiftUI Test 1

Question 1

In Swift, we can return multiple values from a function by using?

Accepted Answer

Tuple

Answer

Both array and tuple

Answer

Array

Answer

None of the above

Question 2

Which of the following is an incorrect Swift value type?

Accepted Answer

Character

Answer

Class

Answer

Double

Answer

Enum

Question 3

What Should We Use To Unwrap Value Inside Optional?

Accepted Answer

None of the above

Answer

@

Answer

?

Answer

!

Question 4

What is an LLVM, exactly?

Accepted Answer

Contains Both Compiler (swiftc And Objective C)

Answer

Objective C Compiler

Answer

Swiftc Compiler

Answer

None of the above

Question 5

Keywords are used to create Contants in Swift.

Accepted Answer

Let

Answer

Contants

Answer

Conts

Answer

None of the above

Question 6

Which of the following is an example of a widely used third-party library for iOS?

Accepted Answer

AFNetwork.framework

Answer

Audiotoolbox.framework

Answer

AVFoundation.framework

Answer

Audiotoolbox.framework

Question 7

To Use Null As An Initializer For A Variable...

Accepted Answer

!

Answer

Null

Answer

?

Answer

_

Question 8

_______ is used to create mutable objects.

Accepted Answer

Var

Answer

Let and Var

Answer

Let

Answer

None of the above

Question 9

Which Swift compiler directive will cause an error to be generated?

Accepted Answer

#error

Answer

$error

Answer

!error

Answer

@error