Kotlin

Explain how Kotlin handles default arguments in function declarations.

Explain sealed classes in Kotlin. When would you use them?

Explain the "single expression" rule for functions in Kotlin.

Explain the concept of extension functions in Kotlin.

Explain the concept of smart casts in Kotlin. How do they improve type safety?

Explain the difference between let, also, apply, run, and with scope functions in Kotlin.

Explain the differences between listOf, mutableListOf, and arrayListOf in Kotlin.

Explain the differences between the first, firstOrNull, single, and singleOrNull.

Explain the in and out variance modifiers in Kotlin's type system.

Explain the lateinit modifier in Kotlin. When and why would you use it?

Explain the purpose of the suspend modifier in Kotlin and its relation to coroutines.

How do you handle exceptions in Kotlin?

How does Kotlin handle concurrency and multithreading, and what are some advantages of using Kotlin for concurrent programming?

How does Kotlin handle default arguments in function declarations?

How does Kotlin handle interoperability with Java?

How does Kotlin support functional programming paradigms?

What are extension properties in Kotlin, and how do they differ from extension functions?

What are Kotlin coroutines, and how do they differ from traditional threads?

What are property accessors in Kotlin, and how do you customize them using custom getters and setters?

What are the benefits of using Kotlin for Android app development compared to Java?

What is a Kotlin data class and when would you use it in your code?

What is a sealed interface in Kotlin?

What is the @JvmOverloads annotation, and how does it affect function overloading in Kotlin when targeting the JVM?

What is the difference between apply and also scope functions in Kotlin?

What is the difference between let, run, and with scope functions in Kotlin?

What is the difference between primary constructors and secondary constructors in Kotlin?

What is the Elvis operator in Kotlin, and when would you use it?

What is the Kotlin Android Extensions plugin?

What is the Kotlin Standard Library?

What is the let extension function, and how would you use it in practice?

What is the primary purpose of a companion object in Kotlin?

What is the purpose of the by lazy delegate in Kotlin?

What is the purpose of the crossinline modifier in Kotlin? When and why would you use it in a lambda expression?

What is the purpose of the init block in Kotlin classes?

What is the purpose of the when expression in Kotlin, and how does it differ from a switch statement in Java?

Explain the differences between sealed classes and abstract classes in Kotlin. When would you use one over the other?

Explain the purpose of the tailrec modifier in Kotlin.

Explain the term "coroutine context" in Kotlin. How does it affect coroutine execution?

What is a suspending function in Kotlin, and how does it differ from a regular function?

What is the difference between a top-level function and a member function in Kotlin?

What is the difference between infix functions and regular functions in Kotlin, and when would you use an infix function?