Welcome to our tour of Kotlin!

Quickly learn the essentials of the Kotlin programming language through our tours. Grasp the fundamentals with the beginner tour. Deepen your understanding with the intermediate tour.

• 

• 

• Hello world

  Basic types

  Collections

  Control flow

  Functions

  Classes

  Null safety

• Extension functions

  Scope functions

  Lambda expressions with receiver

  Classes and interfaces

  Objects

  Open and special classes

  Properties

  Null safety

  Libraries and APIs