Kakutani Shintaro is a Ruby programmer and organizer in Japan. He works at Eiwa System Management building Ruby on Rails applications and coaching clients in agile methodologies. He is involved in the Ruby community as a board member of Nihon Ruby-no-kai and a core organizer of RubyKaigi conferences. RubyKaigi conferences bring together Ruby programmers internationally to share knowledge in a spirit of collaboration represented by the Ruby value of being "nice" to one another.

1. “Ruby ”
KAKUTANI Shintaro; Nihon Ruby-no-kai; Eiwa System Management,Inc.
2010 4 25

2. 2010 4 25

3. 2010 4 25

4. Coming to you
from Tokyo
http://www.flickr.com/photos/motoe/2178326040/
2010 4 25

5. Eiwa System Management,Inc.
2010 4 25

6. ✓ Building Ruby/Rails App
✓ Agile Coaching to clients
✓ sometimes give a talk in
conference
2010 4 25

7. http://www.flickr.com/photos/recompile_net/3735197313/
2010 4 25

8. slideshare can’t handle my cover
slide properly since last year :<
http://www.slideshare.net/kakutani/presentations
2010 4 25

9. Some
Translation
Works
2010 4 25

10. 2010 4 25

11. 2010 4 25

12. I’m a board
member of
2010 4 25

13. Nihon Ruby-no-kai
(Japan Ruby Group)
http://jp.rubyist.net
2010 4 25

14. I’m one of
RubyKaigi
organizers
2010 4 25

15. RubyKaigi
http://rubykaigi.org
http://www.randomfractals.com/Flickorama/Flickorama.html
2010 4 25

16. (talk about it later)
2010 4 25

17. I’m the founder of
Regional RubyKaigi
project
2010 4 25

18. 17 kaigis
9 cities
21 months
(2008.08 - 2010.05)
2010 4 25

19. I’m a core
member of
Asakusa.rb
2010 4 25

20. Asakusa.rb
http://www.flickr.com/photos/takkanm/3978417669
2010 4 25

21. Asakusa.rb is the most
famous regional Ruby
user group in Japan☺
2010 4 25

22. ✓ Asakusa.rb ✓ Mitaka.rb
✓ Akasaka.rb ✓ Chiba.rb
✓ Tokyu.rb ✓ Hokuriku.rb
✓ Matsue.rb ✓ Jimbocho.rb
✓ Sapporo.rb ✓ ...
2010 4 25

23. http://www.flickr.com/photos/hsbt/4496443473/
2010 4 25

24. feel free to contact me
when you’re coming to
Tokyo☺
2010 4 25

25. What Does
“We Speak Ruby”
Really Mean?
2010 4 25

26. It’s not only
we can read/write
Ruby,
2010 4 25

27. but also
We think/behave
like Ruby☺
2010 4 25

28. Language matters
to programmers
2010 4 25

29. I’m using Ruby
over 9 years
2010 4 25

30. the language
you’ve chosen to
spent time with,
2010 4 25

31. Ruby
2010 4 25

32. in turn reflect
back on you,
for better or worse.
2010 4 25

33. ...Can you believe it?
2010 4 25

34. Human used to type a
semicolon at the end of
each line while they’re
programming.
2010 4 25

35. It’s intentional by
Matz☺
2010 4 25

36. Evidence:
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37. http://www.rubyist.net/~matz/slides/oscon2003/
2010 4 25

38. http://www.rubyist.net/~matz/slides/oscon2003/mgp00014.html
2010 4 25

39. Ruby
2010 4 25

40. Ruby makes me
feel more powerful
2010 4 25

41. I feel Ruby loves
programmers
2010 4 25

42. Why do I feel Ruby
loves programmers?
2010 4 25

43. Ruby trusts
programmers!
2010 4 25

44. Ruby trusts programmers
✓ Duck Typing
✓ Open Classes
✓ Powerful Meta-
Programming
2010 4 25

45. http://www.rubyist.net/~matz/slides/oscon2003/mgp00014.html
2010 4 25

46. I’m getting love
Rubyists
http://www.flickr.com/photos/pragdave/542486933/
2010 4 25

47. I have fun to play
with their...
2010 4 25

48. CHAOS!
Yeah! I’m here!
http://lumberjaph.net/blog/index.php/2010/03/25/github-explorer/
2010 4 25

49. I’d love to organize
RubyKaigi to get
them together.
(it must be fabulous!)
2010 4 25

50. I became behave
like Ruby on
running RubyKaigi
2010 4 25

51. Respond to messages
from rubyists
dynamically instead of
limited static behaviour.
2010 4 25

52. I’m willing to change
my behaviour
if it were needed.
2010 4 25

53. We’ve been improved
and leveraged RubyKaigi
through Reflections/
Retrospectives.
2010 4 25

54. ~50 RubyKaigi
~20 Attendees
~10 Ratio
non-Japanese
~5 Japanese
~246 ~400 ~544 ~654
2006 2007 2008 2009
2010 4 25

55. 2010 4 25

56. RubyKaigi2009
✓ Scott Chacon ✓ Thomas Enebo &
✓ Yehuda Katz Nick Sieger
✓ Jason Goecke ✓ John Mettraux
✓ Michael Fellinger ✓ Andriy Hnativ
✓ Jeremy Evans ✓ Joshua Hull
✓ Aaron Quint ✓ Daniel Bovensiepen
✓ Ilya Grigorik ✓ James Edward Gray II
✓ Mohammad A. Ali & ✓ Aaron Patterson
Ehab El-Badry ✓ Vincent Isambart
2010 4 25

57. Last, but most
important
2010 4 25

58. “With great power comes
great responsibility.
2010 4 25

59. Be nice
2010 4 25

60. “Matz is nice,
so we’re nice.
2010 4 25

61. Be nice to Rubyists and
non-Rubyists(so far)
2010 4 25

62. Be “nice” to each other!
2010 4 25

63. RubyKaigi is yet
another implementation
of “nice” as Ruby-ish.
2010 4 25

64. http://rubykaigi.org/2010/
2010 4 25

65. Aug 27-29 2010
@Tsukuba,
Ibaraki,Japan
2010 4 25

66. 2008
2010
2007 Narita
2009
2006
2010 4 25

67. Keynote speakers
2010 4 25

68. Matz
2010 4 25

69. Jeremy
Kemper
http://www.tbray.org/ongoing/When/200x/2009/09/13/Shimane-Rubyworld-Conference
2010 4 25

70. Chad
Fowler
http://www.flickr.com/photos/x180/3505452356/
2010 4 25

71. Session Speakers
2010 4 25

72. We’re looking for
speakers!!
(deadline: 28th April)
http://rubykaigi.org/2010/en/CallForPresentationProposals.html
2010 4 25

73. look forward to
meeting w/ you
in RubyKaigi☺
2010 4 25

74. Summary
2010 4 25

75. What Does
“We Speak Ruby”
Really Mean?
2010 4 25

76. It’s not only
we can read/write
2010 4 25

77. Ruby
2010 4 25

78. but also
We think/behave
like
2010 4 25

79. Ruby
2010 4 25

80. “With great power comes
great responsibility.
2010 4 25

81. Be “Nice” to each other!
2010 4 25

82. RubyKaigi
http://rubykaigi.org
http://www.randomfractals.com/Flickorama/Flickorama.html
2010 4 25

83. We’re looking for
speakers!!
(deadline: 28th April)
http://rubykaigi.org/2010/en/CallForPresentationProposals.html
2010 4 25

84. look forward to
meeting w/ you
in RubyKaigi☺
2010 4 25

85. shintaro@kakutani.com
2010 4 25