Scala Scala Basics and Syntax

Question 1

Which keyword is used to declare an immutable variable in Scala?

Accepted Answer

val

Answer

var

Answer

let

Answer

const

Question 2

What is the output of `println(10 / 3)` in Scala?

Accepted Answer

3

Answer

3.33

Answer

4

Answer

Error

Question 3

How do you define a function in Scala?

Accepted Answer

def foo() {}

Answer

function foo() {}

Answer

fun foo() {}

Answer

func foo() {}

Question 4

Which of the following is a valid Scala string interpolation syntax?

Accepted Answer

s"Hello $name"

Answer

"Hello $name"

Answer

f"Hello $name"

Answer

b"Hello $name"

Question 5

What does the `Unit` type represent in Scala?

Accepted Answer

The absence of a meaningful return value

Answer

A null value

Answer

An empty collection

Answer

An error type

Question 6

Which symbol is used for the 'not equal' operator in Scala?

Accepted Answer

!=

Answer

<>

Answer

~=

Answer

=/=