Idio~ma~tic Kotlin (droidcon Vienna 2019)

‘Idiomatic’ is a word often used by Kotlin experts to describe elegant patterns or solutions that make excellent use of Kotlin’s features. Let’s turn this attitude around for a change, and have some fun by taking a look at the worst ways you can twist and abuse language features to take shortcuts, create tricky solutions, achieve exciting syntax, or confuse others who dare enter your codebase.

Talk recording: https://www.youtube.com/watch?v=XzBhrNq0nvQ

Transcript

1. tic Kotlin ma Idio Márton Braun zsmb.co zsmb13 braun.marton@autsoft.hu
2. Idiotic Kotlin Márton Braun zsmb.co zsmb13 braun.marton@autsoft.hu
3. Odd operations
14. https://leanpub.com/effectivekotlin
15. https://leanpub.com/effectivekotlin
16. https://leanpub.com/effectivekotlin
17. https://leanpub.com/effectivekotlin
18. https://leanpub.com/effectivekotlin
19. https://leanpub.com/effectivekotlin
20. https://leanpub.com/effectivekotlin
21. https://leanpub.com/effectivekotlin
22. https://leanpub.com/effectivekotlin
23. https://todd.ginsberg.com/post/kotlin-random-extension/
24. ＼ ツ ／ https://todd.ginsberg.com/post/kotlin-random-extension/
25. ＼ ツ ／ ＼ ツ ／ https://todd.ginsberg.com/post/kotlin-random-extension/
26. ＼ ツ ／ ＼ ツ ／ https://todd.ginsberg.com/post/kotlin-random-extension/
27. ＼ ツ ／ ＼ ツ ／ ＼ ツ ／ https://todd.ginsberg.com/post/kotlin-random-extension/
28. ＼ ツ ／ https://todd.ginsberg.com/post/kotlin-random-extension/ ＼ ツ ／
29. https://todd.ginsberg.com/post/kotlin-random-extension/ ＼ ツ ／
30. https://todd.ginsberg.com/post/kotlin-random-extension/ ＼ ツ ／
31. https://todd.ginsberg.com/post/kotlin-random-extension/ ＼ ツ ／
32. https://todd.ginsberg.com/post/kotlin-random-extension/ ＼ ツ ／
33. Spam
34. https://zsmb.co/talks/#typical-kotlin
35. https://zsmb.co/talks/#typical-kotlin
36. https://zsmb.co/talks/#typical-kotlin
37. https://zsmb.co/talks/#typical-kotlin
38. https://zsmb.co/talks/#typical-kotlin
39. https://zsmb.co/talks/#typical-kotlin
40. https://zsmb.co/talks/#typical-kotlin
41. https://zsmb.co/talks/#typical-kotlin
42. https://zsmb.co/talks/#typical-kotlin
43. https://zsmb.co/talks/#typical-kotlin
44. https://zsmb.co/talks/#typical-kotlin
45. https://zsmb.co/talks/#typical-kotlin
46. https://zsmb.co/talks/#typical-kotlin
47. https://zsmb.co/talks/#typical-kotlin
48. https://zsmb.co/talks/#typical-kotlin
49. https://zsmb.co/talks/#typical-kotlin
59. https://medium.com/@elizarov/dealing-with-absence-of-value-307b80534903
60. https://medium.com/@elizarov/dealing-with-absence-of-value-307b80534903
61. https://medium.com/@elizarov/dealing-with-absence-of-value-307b80534903
62. https://medium.com/@elizarov/dealing-with-absence-of-value-307b80534903
63. https://medium.com/@elizarov/dealing-with-absence-of-value-307b80534903
64. https://medium.com/@elizarov/dealing-with-absence-of-value-307b80534903
65. Wishlist features
66. https://www.reddit.com/r/Kotlin/comments/cdotu0/intellectuals_will_understand/
67. https://www.reddit.com/r/Kotlin/comments/cdotu0/intellectuals_will_understand/
68. https://www.reddit.com/r/Kotlin/comments/cdotu0/intellectuals_will_understand/
69. https://www.reddit.com/r/Kotlin/comments/cdotu0/intellectuals_will_understand/
70. https://www.reddit.com/r/Kotlin/comments/cdotu0/intellectuals_will_understand/
71. https://www.reddit.com/r/Kotlin/comments/cdotu0/intellectuals_will_understand/
72. https://www.reddit.com/r/Kotlin/comments/cdotu0/intellectuals_will_understand/
73. https://www.reddit.com/r/Kotlin/comments/cdotu0/intellectuals_will_understand/
74. https://www.reddit.com/r/Kotlin/comments/cdotu0/intellectuals_will_understand/
75. https://www.reddit.com/r/Kotlin/comments/cdotu0/intellectuals_will_understand/
76. https://twitter.com/marcinmoskala/status/1007640373970329600
77. https://twitter.com/marcinmoskala/status/1007640373970329600
78. https://twitter.com/marcinmoskala/status/1007640373970329600
79. https://twitter.com/marcinmoskala/status/1007640373970329600
80. https://twitter.com/marcinmoskala/status/1007640373970329600
81. https://twitter.com/marcinmoskala/status/1007640373970329600
82. https://twitter.com/marcinmoskala/status/1007640373970329600
83. https://twitter.com/marcinmoskala/status/1007640373970329600
84. https://twitter.com/marcinmoskala/status/1007640373970329600
96. JavaScript
109. Puzzlers
123. https://stackoverflow.com/q/48037330/4465208
124. https://stackoverflow.com/q/48037330/4465208
125. https://stackoverflow.com/q/48037330/4465208
126. https://stackoverflow.com/q/48037330/4465208
127. https://stackoverflow.com/q/48505963/4465208
128. https://stackoverflow.com/q/48505963/4465208
129. https://stackoverflow.com/q/48505963/4465208
130. https://stackoverflow.com/q/48505963/4465208
131. https://stackoverflow.com/q/48505963/4465208
132. https://stackoverflow.com/q/48505963/4465208
133. https://stackoverflow.com/q/48505963/4465208
134. https://stackoverflow.com/q/48505963/4465208
135. https://stackoverflow.com/q/48505963/4465208
136. https://stackoverflow.com/q/48505963/4465208
137. https://stackoverflow.com/q/48505963/4465208
138. https://stackoverflow.com/q/48505963/4465208
139. https://stackoverflow.com/q/48505963/4465208
140. Sources • Effective Kotlin - Marcin Moskala  https://leanpub.com/effectivekotlin • Abusing Kotlin's Unicode Support for Fun - Todd Ginsberg  https://todd.ginsberg.com/post/kotlin-random-extension/ • Typical Kotlin - Márton Braun  https://zsmb.co/talks/#typical-kotlin • Dealing with the absence of value - Roman Elizarov  https://medium.com/@elizarov/dealing-with-absence-of-value- 307b80534903
141. Sources • Reddit post - /u/Tok-A-Mak  https://www.reddit.com/r/Kotlin/comments/cdotu0/intellectuals_will_understand/ • Tweet - Marcin Moskala  https://twitter.com/marcinmoskala/status/1007640373970329600 • Stack Overflow question – Hi Lo  https://stackoverflow.com/q/48037330/4465208 • Stack Overflow question - cuihtlauac  https://stackoverflow.com/q/48505963/4465208
142. Image credits • First cover  https://unsplash.com/photos/Co_hWX_XtEk • Second cover  https://www.pexels.com/photo/brown-tabby-cat-lying-on-sofa-755834/ • Questions slide  https://unsplash.com/photos/9SWHIgu8A8k
143. zsmb.co/talks zsmb13
144. Questions? Márton Braun zsmb.co zsmb13 braun.marton@autsoft.hu