Upgrade to Pro — share decks privately, control downloads, hide ads and more …

My talk on i4cup meetup

Avatar for vixentael vixentael
April 28, 2016
Programming
0
230

My talk on i4cup meetup

My talk on small local i4cup meetup. Telling about my Swift fuckup :)

Avatar for vixentael

vixentael

April 28, 2016
Tweet

More Decks by vixentael

See All by vixentael
Building security into autonomous & robotic systems
Avatar for vixentael vixentael
0
31
Using YubiKey and FIDO U2F for secure authentication
Avatar for vixentael vixentael
0
2.4k
Data is a new security boundary
Avatar for vixentael vixentael
0
7.1k
Cryptographic protection of ML models
Avatar for vixentael vixentael
0
3.4k
e2ee != security != privacy
Avatar for vixentael vixentael
0
2.5k
Maintaining cryptographic library for 12 languages
Avatar for vixentael vixentael
1
4.4k
10 lines of encryption, 1500 lines of key management
Avatar for vixentael vixentael
2
2k
Security, privacy and cryptography at WWDC19
Avatar for vixentael vixentael
1
840
Data encryption: CyberKids edition
Avatar for vixentael vixentael
0
740

Other Decks in Programming

See All in Programming
bootcamp2025_バックエンド研修_WebAPIサーバ作成.pdf
Avatar for GENIEE ,Inc geniee_inc
0
140
Devvox Belgium - Agentic AI Patterns
Avatar for Kevin Dubois kdubois
1
150
品質ワークショップをやってみた
Avatar for Nealle nealle
0
650
AIと人間の共創開発！OSSで試行錯誤した開発スタイル
Avatar for mae616 mae616
2
820
フロントエンド開発のためのブラウザ組み込みAI入門
Avatar for Masashi Hirano masashi
7
3.6k
The Past, Present, and Future of Enterprise Java
Avatar for ivargrimstad ivargrimstad
0
350
TransformerからMCPまで（現代AIを理解するための羅針盤）
Avatar for MIKIO KUBO mickey_kubo
7
5.6k
GC25 Recap: The Code You Reviewed is Not the Code You Built / #newt_gophercon_tour
Avatar for mazrean mazrean
0
130
Amazon Verified Permissions実践入門 〜Cedar活用とAppSync導入事例/Practical Introduction to Amazon Verified Permissions
Avatar for MURAKAMI Masahiko fossamagna
2
100
O Que É e Como Funciona o PHP-FPM?
Avatar for Marcel dos Santos marcelgsantos
0
220
社会人になっても趣味開発を続けたい！ / traPavilion
Avatar for mazrean mazrean
1
110
3年ぶりにコードを書いた元CTOが Claude Codeと30分でMVPを作った話
Avatar for 小島舞子 / Maiko Kojima maikokojima
0
690

Featured

See All Featured
Save Time (by Creating Custom Rails Generators)
Avatar for Garrett Dimon garrettdimon
PRO
32
1.7k
Faster Mobile Websites
Avatar for Dean Hume deanohume
310
31k
Navigating Team Friction
Avatar for Lara Hogan lara
190
15k
The Psychology of Web Performance [Beyond Tellerrand 2023]
Avatar for Tammy Everts tammyeverts
49
3.1k
Reflections from 52 weeks, 52 projects
Avatar for Jefferson Lam jeffersonlam
355
21k
Learning to Love Humans: Emotional Interface Design
Avatar for Aarron Walter aarron
274
41k
The Success of Rails: Ensuring Growth for the Next 100 Years
Avatar for Eileen M. Uchitelle eileencodes
46
7.7k
Art, The Web, and Tiny UX
Avatar for Lynn Fisher lynnandtonic
303
21k
GitHub's CSS Performance
Avatar for Jon Rohan jonrohan
1032
470k
Making the Leap to Tech Lead
Avatar for Ryan Cromwell cromwellryan
135
9.6k
Typedesign – Prime Four
Avatar for Hannes Fritz hannesfritz
42
2.8k
個人開発の失敗を避けるイケてる考え方 / tips for indie hackers
Avatar for panda_program panda_program
116
20k

Transcript

  1. i4☕

  2. Code that smells aka ‘bydlo-code’

  3. kill me, please

  4. don’t write code that smells

  5. None

  6. there was a dev team…

  7. there was a dev team… …writing on ObjC

  8. and they decided to switch to Swift!

  9. and they decided to switch to Swift! in production!

  10. None

  11. it was nice morning and PM decided to install app

  12. it was nice morning and PM decided to install app

    on device!
  13. None

  14. it’s not us! it’s new 7.3 Xcode!

  15. oh no, it’s us :(

  16. "loadData has not been implemented" found in logs

  17. None

  18. – loadData(…) -> … – loadData(…) -> … ChildTableViewController <T>

    BaseTableViewController <T>

  19. BaseTableViewController <T> – loadData(…) -> … ChildTableViewController <T> – loadData(…)

    -> … generics stub overriden

  20. BaseTableViewController <T> – loadData(…) -> … ChildTableViewController <T> – loadData(…)

    -> … generics stub overriden not called at all

  21. A – architecture

  22. Problem solving

  23. What if we disable optimization?

  24. let’s disable optimization..

  25. too many optimizations! swift compiler optimization!

  26. Why debug is ok?

  27. …Testability

  28. Debug Release Optimization Testability WMO yes WMO no

  29. WMO https://developer.apple.com/swift/blog/?id=27 if method has no ‘internal’ access, compiler may

    mark it as ‘final’

  30. Testability allows you to use all ‘internal’ methods in tests

    like ‘public’

  31. everything is ok overriden methods may be lost Debug Release

    Optimization Testability WMO yes WMO no

  32. tweet all the things!

  33. tweet all the things!

  34. sudden help!

  35. sudden help! swift contributor

  36. https://gist.github.com/PaulTaykalo/5c97010874a93626ca3c Minimal crashable code

  37. http://openradar.appspot.com/radar?id=4971716266688512 Filed Radar

  38. SIL devirtualization: Conservatively avoid filtering devirt candidates on generic base

    classes Fix by @jckarter https://github.com/apple/swift/pull/1954

  39. SIL devirtualization: Conservatively avoid filtering devirt candidates on generic base

    classes Fix by @jckarter https://github.com/apple/swift/pull/1954

  40. Fix by @jckarter fix! https://github.com/apple/swift/pull/1954

  41. Tests https://github.com/apple/swift/pull/1954

  42. Swift 2.2 Patch https://github.com/apple/swift/pull/1954

  43. Lessons learnt

  44. Lesson #1 every decision has consequences

  45. sooner or later they’ll appear Lesson #1 every decision has

    consequences

  46. Lesson #2 always try build in release on device

  47. at least once a day Lesson #2 always try build

    in release on device

  48. and community Lesson #3 twitter rulez

  49. Lesson #4 PMs are useful

  50. sometimes Lesson #4 PMs are useful

  51. team: Vitaliy, Igor, Paul Thanks community: @akosma, @jckarter PM: Anna

  52. None