I have recently decided to start to learn Kotlin, and have started with the Koans.

Koans are simple unit tests which help ease you into learning a new language.

The first step was setting this up, in Windows and VSCode… cause for some reason I hate myself that much.

Requirements

• Install Java SDK
• Install the Java Extension Pack for VSCode
• Install the Kotlin Language Extension for VSCode

Using

So I am using VSCode as the editor and then the command line to run the unit tests.

Parts

Since this will be ongoing, I am going to break it into a number of parts, listed below (this list will be updated over time):

1. Hello World
2. Java To Kotlin Converter
3. Named Arguments
4. Default Arguments
5. Lambdas
6. String Templates
7. Data Classes
8. Nullable Types
9. Smart Casting
10. Extension Functions and Extensions On Collections
11. Object Expressions and SAM Conversions
12. Kotlin’s Elvis Operator
13. Return when
14. The awesome that is the backtick
15. Collections
16. It is a thing
17. Operators
18. Operators don’t need to mean one thing
19. Destructuring
20. For Loop
21. Invoke
22. Looking at the In Operator & Contains
23. The .. operator
24. Todo
25. By
26. The lazy delegate
27. The Observable Delegate (with a slight detour on reference functions)
28. The map delegate
29. The vetoable delegate
30. The notnull delegate and lateinit