Kotlin Kotlin Functions and Lambdas

Question 1

What is a higher-order function in Kotlin?

Accepted Answer

A function that takes or returns another function

Answer

A function with more than 5 parameters

Answer

A function defined inside a class

Answer

A function marked with the `high` keyword

Question 2

What does the `it` keyword represent inside a Kotlin lambda?

Accepted Answer

The implicit single parameter of the lambda

Answer

The return type of the lambda

Answer

The enclosing class instance

Answer

The last expression result

Question 3

Which Kotlin keyword is used to mark a function as inline?

Accepted Answer

inline

Answer

inlined

Answer

@Inline

Answer

embed

Question 4

What is a lambda expression in Kotlin?

Accepted Answer

An anonymous function defined with curly braces

Answer

A named function stored in a variable

Answer

A function inside an object declaration

Answer

A recursive function

Question 5

How do you pass a trailing lambda in Kotlin?

Accepted Answer

Place it outside the parentheses after the function call

Answer

Place it inside parentheses after the function name

Answer

Use the `lambda` keyword before the block

Answer

Lambdas cannot be trailing in Kotlin

Question 6

What does the `return@label` syntax do in Kotlin?

Accepted Answer

Returns from a specific lambda or function using a label

Answer

Returns from the enclosing function

Answer

Throws an exception

Answer

Restarts the enclosing loop