Kotlin 101
Download as PPTX, PDF0 likes383 views
The document provides an overview of Kotlin's history and its development by JetBrains, explaining its features and applications in various environments. It includes a practical demonstration of the 'Game of Life' to illustrate Kotlin concepts like null safety and functional programming. Additional resources and links for further learning about Kotlin are also provided.
![• Kotlin History
• How I’m Learning Kotlin
• [ INTERACTIVE DEMO ]
• Remember demos aren’t real
• Problems
4
AGENDA
The WYSIWYG slide](https://image.slidesharecdn.com/kotlin101-180829202921/85/Kotlin-101-4-320.jpg)
Kotlin 101
- 1. KOTLIN
- 3. REQUIRED ADVERTISING You can click next in 5 seconds… 3
- 4. • Kotlin History • How I’m Learning Kotlin • [ INTERACTIVE DEMO ] • Remember demos aren’t real • Problems 4 AGENDA The WYSIWYG slide
- 5. • Started in 2010 • Version 1 in 2016 • Developed by JetBrains • Built in response to real development pains • Borrows from other languages • Built on the JVM • Sum of the parts • First class support from Google • Hybrid language • Not pure OO • Not pure functional 5 KOTLIN HISTORY I have clothes older than this…
- 6. • IntelliJ • Android Studio • VIM • Sublime • Code • Atom • Eclipse • Netbeans 6 YOUR FAVOURITE EDITOR SUPPORTS IT Unless your favourite is Fat Visual Studio
- 7. • Normal Person • Basic Pascal Delphi PHP Perl C# JavaScript TypeScript Java • Where do I begin? 7 HOW IAM LEARNING KOTLIN How awkward would it be if I didn’t know it….
- 8. KOANS Out of nowhere, the mind comes forth. — The Diamond Sutra 8
- 9. • Simple “game” • Start with a grid of alive & dead cells • 4 rules • Under population: Any live cell with < 2 neighbours dies • Any live cell with 2 or 3 neighbours lives • Over population: Any live cell with > 3 neighbours dies • Reproduction: Any dead cell with exactly 3 neighbours comes to life 9 GAME OF LIFE Background for the big demo TRUE: 3 neighbours it lives TRUE: 2 neighbours & was already alive, stays alive FALSE: Everything else dies
- 10. • Grid is an array of booleans in an array • Render • Draw to the screen • Evolve • Make a new grid • Go though each cell • Count how many neighbours it has • Apply rules to new grid • Replace the existing grid • Repeat 10 GAME OF LIFE Big demo time
- 11. GAME OF LIFE Shall we play a game 11
- 12. • Getters & Setters • Null Safety • When • Inheritance • High Order Functions • by (delegated properties) • todo • Reflection • Making your own Operators • String Templates • Backticks 12 OTHER THINGS In no particular order
- 13. • JetBrains • Interoperability hacks • “Kt” suffix on classes • Kotlin to JS • Lack of static • Maybe • Is it not opinionated enough? 13 PROBLEMS Is Kotlin Perfect?
- 14. https://github.com/JetBrains/kotlin-workshop https://kotlin.link https://try.kotlinlang.org https://github.com/Kotlin/kotlin-koans https://github.com/gradle/kotlin- dsl/tree/master/samples https://kotlinlang.org/docs/reference/idioms.ht ml http://bit.ly/kotlinhelp 14 MORE RESOURCES I know it is too small to read; grab these slides from me
- 15. THANK YOU Robert MacLean @rmaclean www.sadev.co.za 15