Second best time to speak "Kotlin" is NOW

A casual talk about an introduction to Kotlin, sharing my personal journey and why Android developers in Pakistan and even other devs should care about Kotlin. Android devs have to adopt Kotlin and it is scary that some folks in the local community are still evaluating. I also tried to discuss common challenges and some proposed solutions about how to deal with them. Bottom line is that the more you use Kotlin, the more you love it!

Transcript

1. otlin What the hype? Why should you care?
3. Wahib-Ul-Haq
4. Wahib-Ul-Haq
5. Wahib-Ul-Haq
6. Wahib-Ul-Haq Android + Developer Advocate @
7. Wahib-Ul-Haq Android + Developer Advocate @ Munich (Germany)
8. Wahib-Ul-Haq Android + Developer Advocate @ Munich
9. Wahib-Ul-Haq Android + Developer Advocate @ Munich =
12. https://insights.stackoverflow.com/survey/2019
15. Kotlin was unveiled in July 2011 for the first time and open-sourced in 2012
16. Kotlin was unveiled in July 2011 for the first time and open-sourced in 2012 First official release of v1.0.0 in 2016 and v1.3.30 happened yesterday
17. Kotlin was unveiled in July 2011 for the first time and open-sourced in 2012 First official release of v1.0.0 in 2016 and v1.3.30 happened yesterday Kotlin is developed by JetBrains, the creators of IntelliJ IDEA
18. Kotlin was unveiled in July 2011 for the first time and open-sourced in 2012 First official release of v1.0.0 in 2016 and v1.3.30 happened yesterday Kotlin is developed by JetBrains, the creators of IntelliJ IDEA Primary development is from a team of JetBrains programmers based in Saint Petersburg, Russia
19. Kotlin was unveiled in July 2011 for the first time and open-sourced in 2012 First official release of v1.0.0 in 2016 and v1.3.30 happened yesterday Kotlin is developed by JetBrains, the creators of IntelliJ IDEA Primary development is from a team of JetBrains programmers based in Saint Petersburg, Russia The name comes from Kotlin Island, near St. Petersburg (Hint: Java)
21. "One language finally got everything right!" ~ Andrey Breslav
22. Kotlin is a statically typed programming language that runs on JVM
23. Kotlin is a statically typed programming language that runs on JVM Kotlin is null safe and offers 100% Java interoperability
24. Kotlin is a statically typed programming language that runs on JVM Kotlin is null safe and offers 100% Java interoperability Kotlin could be referred as improvised form of Java
25. Kotlin is a statically typed programming language that runs on JVM Kotlin is null safe and offers 100% Java interoperability Kotlin could be referred as improvised form of Java Kotlin is an inherently concise language with a functional programming style
26. Kotlin is a statically typed programming language that runs on JVM Kotlin is null safe and offers 100% Java interoperability Kotlin could be referred as improvised form of Java Kotlin is an inherently concise language with a functional programming style Kotlin uses aggressive type inference to determine the type
27. Kotlin is a statically typed programming language that runs on JVM Kotlin is null safe and offers 100% Java interoperability Kotlin could be referred as improvised form of Java Kotlin is an inherently concise language with a functional programming style Kotlin uses aggressive type inference to determine the type Supports Extension Functions
28. Kotlin is a statically typed programming language that runs on JVM Kotlin is null safe and offers 100% Java interoperability Kotlin could be referred as improvised form of Java Kotlin is an inherently concise language with a functional programming style Kotlin uses aggressive type inference to determine the type Supports Extension Functions Designed keeping Java developers in mind
29. Why Android Devs are so excited about it?
31. Source: https://hype.codes/kotlin-vs-java
32. Why Android Devs are so excited about it? At Google I/O 2017, Google announced first-class support for Kotlin on Android. Kotlin is not a FAD!
33. Why Android Devs are so excited about it? At Google I/O 2017, Google announced first-class support for Kotlin on Android. Kotlin is not a FAD! Less code, better readability
34. Why Android Devs are so excited about it? At Google I/O 2017, Google announced first-class support for Kotlin on Android. Kotlin is not a FAD! Less code, better readability Supreme tooling support in Android Studio
35. Why Android Devs are so excited about it? At Google I/O 2017, Google announced first-class support for Kotlin on Android. Kotlin is not a FAD! Less code, better readability Supreme tooling support in Android Studio Improved crash rate (Remember NullPointerExceptions?)
36. Why Android Devs are so excited about it? At Google I/O 2017, Google announced first-class support for Kotlin on Android. Kotlin is not a FAD! Less code, better readability Supreme tooling support in Android Studio Improved crash rate (Remember NullPointerExceptions?) Renewed excitement around experimentation and innovation
37. Makes it easier to read Swift code
40. Employability + Growth
44. If you are an undergrad student, use Kotlin in your semester projects or side projects
45. Challenges when adopting Kotlin in Android teams
46. Not enough support from Manager/Team Lead/Rest of the team
47. Not enough support from Manager/Team Lead/Rest of the team Not enough time to learn and switch
48. Not enough support from Manager/Team Lead/Rest of the team Not enough time to learn and switch Client doesn’t care/not paying for the improvement so why take the pain?
49. Not enough support from Manager/Team Lead/Rest of the team Not enough time to learn and switch Client doesn’t care/not paying for the improvement so why take the pain? Risk of massively increasing technical debt
50. Proposed Strategy
51. Organise Internal Workshops / Course / Side project with your team
52. Organise Internal Workshops / Course / Side project with your team Start writing/migrating Unit Tests in Kotlin
53. Organise Internal Workshops / Course / Side project with your team Start writing/migrating Unit Tests in Kotlin If you touch a class (bug fix or refactor), consider migrating it to Kotlin
54. Organise Internal Workshops / Course / Side project with your team Start writing/migrating Unit Tests in Kotlin If you touch a class (bug fix or refactor), consider migrating it to Kotlin Once you are somewhat confident, write all new features in Kotlin
55. Organise Internal Workshops / Course / Side project with your team Start writing/migrating Unit Tests in Kotlin If you touch a class (bug fix or refactor), consider migrating it to Kotlin Try to get a feature/project to implement independently Once you are somewhat confident, write all new features in Kotlin
56. Is Kotlin attractive for only Android devs?
58. Source: https://kotlinconf.com
59. Multi-platform Source: https://blog.novoda.com
60. Multi-platform and Code Sharing Source: https://blog.novoda.com
61. Kotlin for Data Scientists Source: https://kotlinconf.com
62. Next Steps
64. Going with Java is going to create a legacy system from the day one
65. Going with Java is going to create a legacy system from the day one Sooner or later you would be converting the codebase to Kotlin
66. Going with Java is going to create a legacy system from the day one Sooner or later you would be converting the codebase to Kotlin Why not just start with Kotlin from the get-go?
67. The more you use it, the more you love it!
68. https://www.coursera.org/learn/kotlin-for-java-developers (Paid Course) https://developer.android.com/kotlin/resources (Android) http://talkingkotlin.com (Podcast) http://www.kotlinweekly.net (Medium Weekly Newsletter) https://kotlinlang.org/docs/reference/ (Official Documentation) https://twitter.com/kotlin (Official twitter handle)
69. Thank you! Any questions? @wahibhaq wahibhaq.com
70. One more thing...
71. Join us on Community of 150+ Pakistani Android Developers from all over the world
72. bit.ly/androiddevs-pakistan