Ruby for your two internal programmers

My Arrrrcamp 2013 talk

Transcript

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3. HELLO
   GHENT!
   

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4. B - AT = G
   

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5. PIRATES
   

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6. RUBY FOR BIPOLAR
   PROGRAMMERS
   

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7. $ whoami
   

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8. @janogonzalez
   

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9. @hop_in
   

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10. PIRATES IN CHILE
    

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11. XVI
    CENTURY
    

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12. SIR FRANCIS DRAKE
    

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13. HERO OR
    PIRATE?
    

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14. AKA
    EL DRAKE
    

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15. 6.5M$
    REWARD
    

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16. SIR FRANCIS DRAKE
    

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17. SIR FRANCIS DRAKE
    

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18. HIDDEN
    TREASURES
    

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19. ISLA MOCHA
    

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20. MOCHA DICK
    

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21. XXI
    CENTURY
    

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22. NEW PIRATES
    

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23. NEW PIRATES
    

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24. NEW PIRATES
    

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25. ☑ PIRATES
    ☐ RUBY
    

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26. A TALE OF TWO
    DEVELOPERS
    

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27. HACKER
    V/S
    THINKER
    

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28. HACKER
    

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29. GET THINGS
    DONE
    

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30. FAST
    

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31. HACKS
    

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32. MAINTENANCE
    NIGHTMARE
    

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33. NEEDS MORE DUCT TAPE
    

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34. THINKER
    

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35. THINKS ABOUT
    ABSTRACTIONS
    

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36. THINKS ABOUT
    MAINTAINABILITY
    

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37. TOO MANY
    ABSTRACTIONS
    

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38. ANALYSIS
    PARALYSIS
    

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39. NEEDS MORE LAYERS
    

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40. MY HISTORY
    

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41. A TRILOGY OF
    MOVIES
    

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42. THE HACKER YEARS
    

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43. THE HACKER YEARS
    

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44. THE LEARNING YEARS
    

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45. THE UML YEARS
    

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46. THE UML YEARS
    

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47. THE HACKER
    WAS GONE
    

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48. UML, RUP, GoF,
    XML, ETC.
    

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49. STOCKHOLM
    SYNDROME
    

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50. EVOLUTION?
    

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51. THE ONE TRUE WAY™
    

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52. THE PATH?
    

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53. FEAR
    

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54. I WAS SO WRONG!
    

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55. EVERYDAY LIFE
    IS THE PATH
    

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56. ENTER
    RUBY
    

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57. SMALLTALK IN
    PERL’S DISGUISE
    

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58. HAPPY
    THINKER
    

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59. THINKER
    class AccountProtectionProxy
    def initialize(real_account, owner)
    @subject = real_account
    @owner = owner
    end
    def method_missing(name, *args)
    check_access
    @subject.send(name, *args)
    end
    ...
    

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60. OMG! GoF NEVER
    WAS SO EASY
    

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61. HAPPY
    HACKER
    

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62. HACKER
    $1 if str ~= /(foo)+/
    

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63. ONE LINERS FTW!
    

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64. HACKER
    ❤
    THINKER
    

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65. LET’S WORK
    TOGETHER
    

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66. HARMONY
    

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67. HARMONY
    (1..42).select(&:even?).
    map { |n| n * 2 }.
    reduce(&:*)
    

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68. EXPRESS
    YOURSELF
    

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69. EXPRESS YOURSELF
    File.open('my.txt').each do |line|
    puts line if line =~ /jano/
    end
    

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70. THE HIDDEN
    TRUTH
    

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71. HIDDEN TRUTH
    $ irb
    > puts 'Ahoy World!'
    # Ahoy World!
    # => nil
    

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72. HIDDEN TRUTH
    > self.class
    # => Object
    

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73. HIDDEN TRUTH
    > Object.included_modules
    # => [Kernel]
    

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74. HIDDEN TRUTH
    > Kernel.methods.include? :puts
    # => true
    

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75. THE MOST HIDDEN
    TRUTH
    

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76. THE PATH IS
    NO PATH
    

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77. THE PATH
    

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78. WORKING TOGETHER
    

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79. HACKER
    

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80. EXPLORE
    NEW TERRITORY
    

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81. THINKER
    

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82. FIND ACCEPTANCE
    CRITERIA
    

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83. DEFINE
    COMPONENTS
    

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84. BALANCE
    

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85. DELIVER VALUE
    V/S
    DIMINISH
    TECHNICAL DEBT
    

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86. CREATIVITY
    V/S
    STANDARDIZATION
    

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87. EXAMPLE
    

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88. CASE STATEMENT
    V/S
    FACTORY + COMMANDS
    

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89. EXAMPLE
    case account_type
    when :premium then
    # do stuff
    when :standard then
    # do stuff
    when :personal then
    # do stuff
    end
    

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90. EXAMPLE
    class AccountAccount
    def initialize
    # do stuff
    end
    def execute(context)
    # do stuff
    end
    end
    

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91. EXAMPLE
    class PersonalFactory
    def self.create(type)
    name = "#{type.capitalize}
    Account"
    klass = Kernel.const_get(name)
    klass.new
    end
    end
    

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92. EXAMPLE
    AccountFactory
    .create(account_type)
    .execute(context)
    

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93. IMPLICIT
    V/S
    EXPLICIT
    

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94. CLARITY
    V/S
    DRY
    

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95. CLARITY
    V/S
    SRP
    

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96. NOW
    V/S
    FUTURE
    

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97. MY HUMBLE
    ADVICE
    

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98. LEARN ABOUT
    BEST PRACTICES
    

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99. DON’T FOLLOW BLINDLY
    YOUR FUNCTIONAL GURU
    

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100. DON’T FOLLOW BLINDLY
     YOUR OO GURU
     

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101. TESTS
     +
     REFACTORING
     

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102. HOW TO IMPROVE
     

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103. HACKER
     

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104. LEARN ABOUT
     OOP & PATTERNS
     

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105. TRY IMMUTABILITY &
     SEQUENCES
     

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106. DO SEPARATE
     RESPONSIBILITIES
     

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107. THINKER
     

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108. LEARN ABOUT
     ONE LINERS
     

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109. TRY CODE GOLF
     

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110. DO EVIL STUFF
     

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111. EVERYONE
     

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112. READ A LOT OF
     CODE
     

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113. WRITE A LOT OF
     CODE
     

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114. ONE LAST ADVICE
     

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115. कഁ཭
     

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116. SHU
     कഁ཭
     

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117. HA
     कഁ཭
     

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118. RI
     कഁ཭
     

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120. CONCLUSIONS
     

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121. RUBY GIVES YOU
     FREEDOM
     

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122. LETS YOU STRIVE
     FOR BALANCE
     

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123. AVOID CARGO
     CULT
     

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124. GOOD ADVICE
     V/S
     LAWS
     

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125. THERE IS
     NO TRUE PATH
     

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126. IF YOU MEET THE BUDDHA
     IN THE ROAD, KILL HIM!
     

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127. FOLLOW YOUR
     ❤
     

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128. THANK YOU!
     ❤
     

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129. IMAGES
     • http://en.wikipedia.org/wiki/File:
     1590_or_later_Marcus_Gheeraerts,_Sir_Francis_Drake_Buckland_Abbey,
     _Devon.jpg
     • http://en.wikipedia.org/wiki/File:New_Albion._English_galleon_
     %22Golden_Hinde
     %22_by_Sir_Francis_Drake._Oil_on_canvas._60_x_90_cm..jpg
     • http://en.wikipedia.org/wiki/File:DRAKE_1577-1580.png
     • http://www.vivimoslanoticia.cl/wp-content/uploads/2013/09/Pel
     %C3%ADculas-piratas.jpg
     • http://radiopolar.com/images/noticias/20101127174025.jpg
     • http://upload.wikimedia.org/wikipedia/commons/a/aa/Isla_Mocha_1.jpg
     • http://www.todayifoundout.com/wp-content/uploads/2011/12/Moby-
     Dick-3.jpg
     

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