Тема №3 Kotlin — а почему бы и нет? Спикер — Андрей Турковский — android developer — Компания Rooky Pro Уровень аудитории — Теория есть, начальный опыт применения Цель доклада – Обучение

1. Why not?

3. Why Kotlin
• Simple
• IDE
• Compatible with Java
• Concise
• Null-safety

4. Variables and data types

5. Unit

6. Functions

7. Functions

8. Android extensions

9. Classes and Inheritance

10. With Kotlin, you can do more with
less code

11. With Kotlin, you can do more with
less code

12. You can avoid NullPointerException

13. You can avoid NullPointerException
Elvis-operator

14. You can get rid of util classes

15. Collections in Kotlin

16. Creation (Immutable)
• listOf(1, 2, 3)
• mapOf(1 to “A”, 2 to “B”)
• setOf(“One”, “Two”, “Three”)

17. Creation (Mutable)
• mutableListOf(1, 2, 3)
• mutableMapOf(1 to “A”, 2 to “B”)
• mutableSetOf(“One”, “Two”, “Three”)

18. any

19. all

20. count

21. fold

22. forEach forEachIndexed

23. filter, filterNot, filterNotNull

24. map and flatMap

25. You can work with collections much
more easily

26. You can work with collections much
more easily

27. You can forget about view binding

28. Lambdas and high-order functions

29. Inline functions
• let

30. Inline functions
• with

31. Inline functions
• apply

32. https://kotlinlang.org/