Does One Really Need That Gem?

Transcript

1. Does one really need that Gem?
2. a!/samphippen
3. NO
4. Let’s have some questions a!/samphippen sam@funandplausible.com
5. you: ಠ_ಠ
6. NO
7. Bundler
8. Bundler is one of the best package managers of all time
9. Sincerely
10. Let’s have some questions !!/samphippen sam@funandplausible.com
11. Problem
12. We specified one Gem in our Gemfile
13. We got 6 gems installed
14. Transitive dependencies
15. You presumably trust the RSpec core team
16. Let’s have some questions !!/samphippen sam@funandplausible.com
17. Had you heard of diff-lcs before today?
18. Do you trust its author?
19. Even the most mature gems can have surprises in them
20. (rails)
21. What’s in a Gem?
22. ActiveRecord
23. activerecord.gemspec
24. Gem::Specification.new do |s|
25. s.platform = Gem::Platform::RUBY s.name = 'activerecord' s.version = version s.summary = ‘Object-relationa…’ s.description = 'Databases on Rails…’
26. s.platform = Gem::Platform::RUBY s.name = 'activerecord' s.version = version s.summary = ‘Object-relationa…’ s.description = 'Databases on Rails…’
27. version = File.read(File.expand_path('../../ RAILS_VERSION', __FILE__)).strip
28. s.license = 'MIT'
29. s.add_dependency( ‘activesupport', version) s.add_dependency( ‘activemodel’, version) s.add_dependency( ‘arel', ‘7.0.0.alpha')
30. lib and bin directories
31. A critical approach
33. We’ve all done this
34. We can do better
36. The Ruby Toolbox is your friend
38. State machine versus AASM
39. Most gems are hideously understaffed
42. Remember these people are working for free!
43. Versioning
44. SemVer is our standard
45. M.m.p
46. M.m.p We fixed one or more bugs
47. M.m.p We added one or more features
48. M.m.p We broke one or more APIs
49. 0.m.p We can break your shit at any moment
52. Vendoring
53. There is no shame in vending code
54. Sometimes you do not need an entire gem
55. < 100loc
56. Let’s have some questions a!/samphippen sam@funandplausible.com