Some knowledge of java is welcome but not required. You will learn about safe the call operator, the Elvis operator, the safe cast operator, the not null assertion, the let function and some other important techniques of working with nullable types in Kotlin. You will find out the differences between nullable, not null and platform types. Any programming language which has the concept of null reference throws a NullPointerException. You will see how Kotlin will help you handle the notorious NullPointerException at compile time rather than at runtime.īy the end of the course you will be very comfortable with Kotlin nullability which is one of the main advantages and core features of the language. Overview In this article, we’ll look into the handling of null references in Kotlin. This course is a quick paced introduction into Kotlin null safe type system.ĭuring this 30 min course you will learn the differences between the Java and Kotlin type systems.

Basic java skills would be an advantage (but not required).

Learn to user safe call operator, Elvis operator, safe cast operator, not null assertion, let function and lateinit keyword.

Learn the difference between nullable, not null and platform types.

Null safety in kotlin