1. 2008‐11‐19(Wed); AppleStore, Sapporo
Ruby Sapporo Night vol.8
Talking about “Fluent interface”
snoozer.05@ruby‐sapporo.org
Ruby /Ruby
SHIMADA Koji; Nihon Ruby-no-kai; RubySapporo
http://www.flickr.com/photos/mio-spr/2042538806

3. ✓
✓
✓
✓
✓

5. RubyConf 2008
http://rubyconf.org/

6. Neal Ford,
Advanced DSL in Ruby
http://www.nealford.com/downloads/conferences/canonical/Neal_Ford-
Advanced_DSLs_in_Ruby-slides.pdf

7. Neal Ford,
Advanced DSL in Ruby
http://www.nealford.com/downloads/conferences/canonical/Neal_Ford-
Advanced_DSLs_in_Ruby-slides.pdf

8. Neal Ford,
Advanced DSL in Ruby
http://www.nealford.com/downloads/conferences/canonical/Neal_Ford-
Advanced_DSLs_in_Ruby-slides.pdf

9. ?

12. ✓
✓

13. http://www.flickr.com/photos/quanle/251201209/

14. http://www.flickr.com/photos/jw3000/12703492

15. Martinfowler’s Biki
http://capsctrl.que.jp/kdmsnr/wiki/bliki/?FluentInterface

16. Expect.Once.On(mockLogger)
.Method(“LogError”)
.With(Has.Substring(USER_NAME)
& Has.Substring(“access defined”));
mainframe.expects(once())
.method(“buy”).with(eq(QUANTITY))
.will(returnValue(TICKET));

17. ✓
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✓

18. ?

21. http://www.flickr.com/photos/srijith/1867095482

22. ✓
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26. ✓
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29. http://www.flickr.com/photos/mdd/175282811

30. ✓
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31. ✓
✓

32. http://www.flickr.com/photos/ozyman/443545349

33. ✓
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34. ✓
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37. ✓
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40. http://www.flickr.com/photos/fuckr/91530309

41. ✓

43. Martinfowler’s Biki
http://capsctrl.que.jp/kdmsnr/wiki/bliki/?FluentInterface

44. Evolving an EDSL in Java
http://www.mockobjects.com/files/
evolving_an_edsl.ooplsa2006.pdf

46. ✓
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http://www.flickr.com/photos/17258892@N05/2588347668

48. http://www.flickr.com/photos/good_day/117131491/

49. ✓
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50. A B C
b
a c

51. tmp1 = data.grep(/foo/)
tmp2 = tmp1.uniq
tmp3 = tmp2.sort
tmp4 = tmp3.join(“¥n”)
tmp4.display
data.grep(/foo/).uniq.sort.join(“¥n”).display

53. http://www.flickr.com/photos/jacky83/2311687241

54. ✓
✓
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55. Transcript clear.
Transcript nextPutAll: ‘SHIMADA Koji’.
Transcript cr.
Transcript flush.
Transcript
clear;
nextPutAll: ‘SHIMADA Koji’;
cr;
flush

56. A
b
a c

58. ✓
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59. expectation.setCount(once());
expectation.setMethod(“buy”);
expectation.setArgument(eq(QUANTITY));
expectation.setResult(TICKET);
expectation.setCount(once())
.setMethod(“buy”)
.setArgument(eq(QUANTITY));
.setResult(TICKET);

61. http://www.flickr.com/photos/mio-spr/428995450

63. ✓
✓
✓

64. expectation.setCount(once())
.setMethod(“buy”)
.setArgument(eq(QUANTITY));
.setResult(TICKET);
mainframe.expects(once())
.method(“buy”).with(eq(QUANTITY))
.will(returnValue(TICKET));

66. data.grep(/foo/).uniq.sort.join(“¥n”).display
(1..10).map{|i| i*i}.select{|i| i % 2 == 0}

67. data.grep(/foo/).uniq.sort.join(“¥n”).display
(1..10).map{|i| i*i}.select{|i| i % 2 == 0}
mainframe.expects(once())
.method(“buy”).with(eq(QUANTITY))
.will(returnValue(TICKET));

69. ✓
✓
✓
http://www.flickr.com/photos/17258892@N05/2588347668

70. ✓
✓
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72. rate = Discount.new
rate.cash = 0.05
rate.membership = 0.02
rate.price = 0.01
product.apply_discount(rate)

73. product.apply(
Discount.for.
cash(0.05).
membership(0.02).
price(0.01)
)

74. class Discount
...
def Discount.for
Discount.new
end
def cash(discount)
@for_cash = discount
self
end
end

75. class Discount
...
def Discount.for
Discount.new
end
def cash(discount)
@for_cash = discount
self
end
end

76. class Discount
...
def Discount.for
Discount.new
end
def cash(discount)
@for_cash = discount
self
end
end

77. class Product
...
def apply(discount)
@discount = discount
end
...
end

78. product.apply(
Discount.for.
cash(0.05).
membership(0.02).
price(0.01)
)

81. ✓
✓
✓
✓

85. http://www.flickr.com/photos/srijith/1867095482

91. ...a programmer’s job is too communicate
with other programmers, not just a machine.
Programming, then, is a human task
done by humans for humans.
Oh, and writing good code at the same time.

92. http://www.flickr.com/photos/suvcougar/

96. http://ja.wikipedia.org/wiki/%E5%8B%95%E7%B7%9A
✓
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✓

99. http://www.flickr.com/photos/storm-crypt/2280100565

103. ✓
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104. http://www.flickr.com/photos/nibaq/1735007

105. ✓
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107. ✓
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109. http://www.flickr.com/photos/pedrosz/2287112249

111. 2008‐11‐19(Wed); AppleStore, Sapporo
Ruby Sapporo Night vol.8
Talking about “Fluent interface”
snoozer.05@ruby‐sapporo.org
Ruby /Ruby
SHIMADA Koji; Nihon Ruby-no-kai; RubySapporo
http://www.flickr.com/photos/mio-spr/2042538806