Alba: Why, How and What's So Interesting

https://connpass.com/event/339170/

The talk was given in Japanese, but the deck is in English so it's great if you want to know about Alba.

1. Alba: Why, How and What's So Interesting ౦ژRubyձٞ12 લ໷ࡇ OKURA Masafumi, 2025-01-17
2. self.pretty_print • Name: OKURA Masafumi • Work: Freelance web developer • Activities: Kaigi on Rails, TokyoWomen.rb, Rubygems code reading club, organizing Regional.rb and the Tokyo Metropolis
3. Agenda • 0. What is Alba? • 1. Why did I create Alba? • 2. How was it achieved? • 3. What’s so interesting about it?
4. 0. What is Alba?
6. What is Alba? • https://github.com/okuramasafumi/alba • A JSON serializer for Ruby, JRuby and Truf fl eRuby • Core values: Performance, easy-to-use, feature-rich • Total download: About 1,350,000 • GitHub Stars: About 960
7. Core values of Alba
8. Performance
9. https://github.com/ okuramasafumi/ alba/tree/main/ benchmark
11. 13x faster than ActiveModelSeri alizers!
12. 2.50x slower
13. https://commons.wikimedia.org/wiki/File:C_Programming_Language.svg
14. Alba is one of the fastest among other Ruby implementations
15. Easy-to-use
17. Minimal API to serialize objects into JSON • `attributes` DSL to use underlying object’s attribute directly • `attribute` DSL to compute the result from object’s attribute • `root_key` DSL to de fi ne root key • `association` DSL to embed other serializers’ result
18. Feature-rich
19. Advanced features of Alba • Type support • “Typelizer” gem adds the ability to generate TypeScript types • Conditional attributes • Serializing heterogeneous collections • Filtering • etc.
20. 1. Why did I create Alba?
22. Because there was no de fi nitive JSON serializer
23. Because there was nothing I’d like to use
24. I wanted something that is Ruby-ish
26. What is “Ruby-ish” like?
27. “Yugui: ͦΕ͸ɺίϨΫγϣϯ͕ ͋ͬͯγϟοϑϧ͍ͨ͠ͱࢥͬͨ Βɺshuf fl eͱॻ͍ͯɺͦΕͰಈ ͔ͳ͖Ό͍͚ͳ͍ΜͰ͢Αɻ” https://atmarkit.itmedia.co.jp/news/200907/24/ruby2.html
28. “·ͭ΋ͱɿ͋ͬ͸ͬ͸ɻ γϟοϑϧͰ͖Δ͸ͣͩ ͱɻͰ͖ͳ͚Ε͹Rubyͷό άͩͱɻ” https://atmarkit.itmedia.co.jp/news/200907/24/ruby2.html
29. When we want to do “A”, just write “A” and it should work
30. 2. How was it achieved?
31. use case driven development
32. use case driven development • It’s one of the forms of TDD (Test Driven Development) • Follow these steps: 1. Write use cases as test cases 2. Consider if Alba should support these use cases 3. If yes, implement it
33. Q. Where do use cases come from?
34. A. Issues, discussions and my imagination
35. https://github.com/okuramasafumi/alba/issues/335
36. https://github.com/okuramasafumi/alba/issues/182
37. 3. What’s so interesting about it?
38. Ruby allows us to create Ruby-ish libraries
39. Conditional Attribute
42. Module-level alias
45. Bring in fl ector to infer names
48. DRY variables with meta- programming
50. Count lines of code with `cloc`
52. Ruby allows us to create Ruby-ish libraries
53. Ruby guides us to write Ruby-ish code
54. Concusion
55. We can enjoy Ruby more by writing Ruby-ish code
56. Let Ruby guide us
57. Find your own problem
58. Solve it with Ruby-ish way
59. Happy hacking!