Elm in Production: Type/Test Driven Development

on YouTube ↗42m

" summary

Tracker dashboard, new-user flow and project-members pages are written in Elm and run in production; the team adopts a hybrid workflow called Type/Test Driven Development where the Elm compiler enforces correctness and unit tests assert business rules. Integration with existing JavaScript uses ports (native code is discouraged), forcing occasional multi-language work and JSON serialization. They implement a custom fuzzy matcher because no Elm library exists, and rely on the time-travel debugger and Elm’s strong types to eliminate runtime exceptions and ease refactors.

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" chapters (31)

1. 0:00Intro
2. 0:15Piper Niehaus
3. 0:26Software Engineer at Pivotal
4. 2:35Benevolent dictator for life
5. 3:48What is a pure function?
6. 4:44Pure vs impure functional programming languages
7. 5:30Benefits of pure functional programming
8. 6:11Elm time travel debugger
9. 6:24Time travel debugging
10. 7:30What is static typing?
11. 7:59Dynamic typing
12. 9:35Strong static typing tools in Elm
13. 10:15Benefits of strong static typing...
14. 11:03Elm's friendly compiler
15. 12:03What is the Elm architecture?
16. 12:45Elm architecture example
17. 13:45Benefits of the Elm architecture
18. 15:29Elm and functional programming at Pivotal Tracker
19. 16:39The decision to use Elm
20. 19:10Encoding business Logic into types
21. 20:20How to structure a large Elm app?
22. 21:17File structure puzzle
23. 22:31Fase of refactoring Elm
24. 23:32Testing in Elm
25. 24:01Test/Type Driven Development (TDD)
26. 25:24Testing phase 1
27. 25:42Testing the update loop
28. 26:21Selector pattern
29. 27:02Elm tests driving structure
30. 32:56As a product owner or tester...
31. 36:36Strong static typing / FP in Kotlin

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