Kotlin Kotlin Basics 2

Question 1

Which operator is used to perform a non-null assertion in Kotlin?

Accepted Answer

!!

Answer

?.

Answer

?:

Answer

&&

Question 2

What is the Elvis operator in Kotlin used for?

Accepted Answer

Providing a default value when an expression is null

Answer

Comparing two values

Answer

Casting a type safely

Answer

Performing bitwise operations

Question 3

Which keyword is used to define a constant at the top level in Kotlin?

Accepted Answer

const val

Answer

final val

Answer

static val

Answer

immutable val

Question 4

What is string interpolation in Kotlin?

Accepted Answer

Embedding expressions in strings using $

Answer

Concatenating strings with +

Answer

Converting a number to a string

Answer

Comparing two strings

Question 5

What does `when` replace in Kotlin compared to Java?

Accepted Answer

switch

Answer

if-else

Answer

try-catch

Answer

for loop

Question 6

How do you declare a multi-line string in Kotlin?

Accepted Answer

Using triple quotes """

Answer

Using single quotes ''

Answer

Using backticks ``

Answer

Using the multiline() function