Kotlin - Class Destroyer

In Java, almost everything has to be a class or within a class. In Kotlin, there are several mechanisms for writing code without explicitly introducing classes. The talk will show examples using functions as first-class citizens, higher-order functions, operators, extensions, and property delegation.

Transcript

1. Kotlin – Class Destroyer Bolot Kerimbaev @ Big Nerd Ranch
2. @bolot @bignerdranch Hello, Bolot Kerimbaev
 Big Nerd Ranch Developer
 Instructor
 Sensei
 Android/iOS
3. Kotlin – Class Destroyer
6. @bolot @bignerdranch Hello, world
7. @bolot @bignerdranch Bytecode
8. @bolot @bignerdranch Decompiled Java
9. @bolot @bignerdranch Hello, world
10. @bolot @bignerdranch Functions
11. @bolot @bignerdranch Data Classes
12. Area: 138,793.6 km2 (53,588.5 sq mi) Population: 145 million (2015) Area: 15 km2 (5.8 sq mi) Population: 43,005 (2010)
14. @bolot @bignerdranch Type Inference
15. @bolot @bignerdranch Extensions
16. @bolot @bignerdranch Constructors
19. @bolot @bignerdranch Higher Order Functions
20. @bolot @bignerdranch Let { it.be() } with(this)
21. @bolot @bignerdranch DSLs
22. @bolot @bignerdranch Destructuring
23. @bolot @bignerdranch Invoke, Tailrec, Operator
24. @bolot @bignerdranch More • Josh Skeen, Pragmatic Kotlin on Android, DroidCon London 2017 • David Greenhalgh, Introduction to Kotlin, Connect.Tech 2017 • Big Nerd Ranch Kotlin Programming Guide, coming soon
25. Kotlin Weekend Intensive •May 4-6 at Big Nerd Ranch •Early Bird Ticket $749 • Includes course tuition, beta version of Kotlin book, breakfast + lunch, swag and Fri night kickofff event (optional) •Register by 3/1 for additional $50 off using DEVNEXUS18 •Purchase tickets at bit.ly/kotlin18
26. Who should take this course? • Java Android developers who are interested in transitioning their projects to Kotlin • Developers who are looking to explore the Kotlin language • Developers who wish to see both object-oriented and functional programming paradigms implemented in a modern JVM language • Junior Android developers who need to learn new skills to advance their career More details at bit.ly/kotlin18
27. @bolot @bignerdranch Questions?
28. Kotlin – Class Destroyer Bolot Kerimbaev @ Big Nerd Ranch