Kotlin: Incompetence * Motivation = Innovation?

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Kotlin: Incompetence * Motivation = Innovation?

  1. 1. Wednesday, October 3, 12
  2. 2. About Me • Project lead of Kotlin ➡ at JetBrains since 2010 Andrey Breslav • EG member of JSR-335 ➡ Project Lambda 2Wednesday, October 3, 12
  3. 3. Outline • Where Kotlin comes from • Where features come from 3Wednesday, October 3, 12
  4. 4. Motivation 1995 2012 4Wednesday, October 3, 12
  5. 5. Modern language for Industry Right Abstractions Safety Tool Support Interoperability 5Wednesday, October 3, 12
  6. 6. Expert Users 6Wednesday, October 3, 12
  7. 7. Change the world! Expert Users 6Wednesday, October 3, 12
  8. 8. Change the world! Expert Users 6Wednesday, October 3, 12
  9. 9. Its impossible! Change the world! Expert Users 6Wednesday, October 3, 12
  10. 10. Incompetence • Thinking out of the box • Without knowing it Great for requirements! Lamp s 7Wednesday, October 3, 12
  11. 11. Competence Great for implementations (if you have enough courage) 8Wednesday, October 3, 12
  12. 12. – We hate writing stupid constructors!.. – And getters/setters!.. – We want to use fields!.. 9Wednesday, October 3, 12
  13. 13. – Cant I just say 3.toString()? 10Wednesday, October 3, 12
  14. 14. – String doesnt have enough methods!.. 11Wednesday, October 3, 12
  15. 15. – One return value is too restricting!.. 12Wednesday, October 3, 12
  16. 16. – List<String> contains objects, doesnt it?!. 13Wednesday, October 3, 12
  17. 17. Kotlins Collections 14Wednesday, October 3, 12
  18. 18. – Can you figure out those nulls?!. 15Wednesday, October 3, 12
  19. 19. – Doesnt it know that <TD> must be inside a <TR>?!. 16Wednesday, October 3, 12
  20. 20. – I could use it for the browser, types and all... 17Wednesday, October 3, 12
  21. 21. Kotlin Resources • Docs: http://kotlin.jetbrains.org • Demo: http://kotlin-demo.jetbrains.com • Code: http://github.com/jetbrains/kotlin • Twitter: ➡ @project_kotlin ➡ @abreslav 18Wednesday, October 3, 12

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