Limited Red

Transcript

1. @josephwilk Tuesday, 20 September 11
2. Joseph Wilk Tuesday, 20 September 11
3. Limited Red Joseph Wilk Tuesday, 20 September 11
4. Limited Red Oh crap Joseph Wilk Tuesday, 20 September 11
5. Work In Progress Tuesday, 20 September 11
6. Work In Progress Tuesday, 20 September 11
7. Context Switching is Expensive Tuesday, 20 September 11
8. Small Batch sizes Large batches Small batches Tuesday, 20 September 11
9. Red == Work in Progress Tuesday, 20 September 11
10. 1 day 1.5 day 2 day Tuesday, 20 September 11
11. Why is Red Bad? Tuesday, 20 September 11
12. Limit Red Measure Red Learn Visualise Red Tuesday, 20 September 11
13. Are we Professionals? Tuesday, 20 September 11
14. Tuesday, 20 September 11
15. Tuesday, 20 September 11
16. Tuesday, 20 September 11
17. Joseph Wilk REFACTORING TESTING RED TIME PAIRING Tuesday, 20 September 11
18. Measuring & Visualising Red Tuesday, 20 September 11
19. Limited Red Learn and adapt from test metrics Tuesday, 20 September 11
20. Tuesday, 20 September 11
21. Industrial Logic Tuesday, 20 September 11
22. Industrial Logic Tuesday, 20 September 11
23. Tuesday, 20 September 11
24. Tuesday, 20 September 11
25. Fighting Red Tuesday, 20 September 11
26. ‣Parallel Change ‣Narrowed Change ‣Sequence Change ‣Graceful Retreat ‣Piecemeal Change ‣Gradual Change ‣Evolved Target ‣Unified Methods Joshua Kerievsky Patterns Tuesday, 20 September 11
27. Parallel Change class ImageResizer def resize(x,y) ... end end Tuesday, 20 September 11
28. Parallel Change class ImageResizer include ThumbResizer end module ThumbResizer def resize(x,y) ... end end Tuesday, 20 September 11
29. Ship it Tuesday, 20 September 11
30. But.... Tuesday, 20 September 11
31. Tuesday, 20 September 11
32. Tuesday, 20 September 11
33. Ship it Tuesday, 20 September 11
34. Parallel Change class ImageResizer if FeatureFlipper.active?(:fast_resizer) include FastThumbResizer else include ThumbResizer end end module ThumbResizer def resize(x,y) ... end end module FastThumbResizer def resize(x,y) ... end end Tuesday, 20 September 11
35. But... Both versions!!! Tuesday, 20 September 11
36. Ship it Tuesday, 20 September 11
37. Parallel Change class ImageResizer include FastThumbResizer end module FastThumbResizer def resize(x,y) ... end end Tuesday, 20 September 11
38. Ship it Tuesday, 20 September 11
39. <%- if @game.player?(@active_user) && @black_player.present? && @white_player.present? %> <%= render :template => 'messaging' %> <%- end %> <%- if @game.player?(@active_user) && @black_player.present? && @white_player.present? %> <%= render :template => 'messaging' %> <%- end %> Narrowed Change Tuesday, 20 September 11
40. Narrowed Change class GamePresenter def initialize(game, black_payer, white_player) @game, @black_player, @white_player = game, black_player, white_player end def show_messaging?(&block) messaging_should_be_visible = @game.player?(@user) && @black_player.present? && @white_player.present? yield block if messaging_should_be_visible end end <%- game_presenter.show_messaging? do %> <%= render :template => 'messaging' %> <%- end %> Tuesday, 20 September 11
41. Ship it Tuesday, 20 September 11
42. Narrowed Change class GamePresenter def initialize(game, black_payer, white_player) @game, @black_player, @white_player = game, black_player, white_player end def show_messaging?(&block) messaging_should_be_visible= @game.human_player?(@user) yield block if messaging_should_be_visible end end <%- game_presenter.show_messaging? do %> <%= render :template => 'messaging' %> <%- end %> Tuesday, 20 September 11
43. Ship it Tuesday, 20 September 11
44. Sequence Change Narrowed change Remove control flag Extract method Tuesday, 20 September 11
45. Sequence Change Narrowed change Remove control flag Extract method Tuesday, 20 September 11
46. Graceful Retreat Shave? Please step away from the Yak... Slowly Tuesday, 20 September 11
47. http://www.refactoring.com/catalog/index.html Tuesday, 20 September 11
48. Learning more from Red ‣ Smart Continuous integration ‣ Failure rate ‣ Performance ‣ Flickering Tuesday, 20 September 11
49. Tuesday, 20 September 11
50. Tuesday, 20 September 11
51. Evil hat Tuesday, 20 September 11
52. Tuesday, 20 September 11
53. More Books! Tuesday, 20 September 11
54. “To measure is to know” Lord Kelvin Tuesday, 20 September 11
55. @josephwilk joe@josephwilk.net Kiitos Tuesday, 20 September 11
56. @josephwilk joe@josephwilk.net Kiitos Green Tuesday, 20 September 11
57. @josephwilk joe@josephwilk.net Kiitos Green Tuesday, 20 September 11
58. @josephwilk joe@josephwilk.net Kiitos Green Ship it Tuesday, 20 September 11