What is software made of?

Transcript

1. Powered by Rabbit 2.1.9
   What is software made of?
   Heroku
   Ruby Association
   Yukihiro "Matz" Matsumoto
   @yukihiro_matz
   

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2. Powered by Rabbit 2.1.9
   　
   RubyConf India
   

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3. Powered by Rabbit 2.1.9
   　
   What is software made of?
   

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4. Powered by Rabbit 2.1.9
   　
   What are little boys made of?
   

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5. Powered by Rabbit 2.1.9
   　
   What are little boys made of?
   What are little boys made of?
   Snips and snails
   And puppy-dogs' tails
   That's what little boys are made of
   

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6. Powered by Rabbit 2.1.9
   　
   What are little girls made of?
   What are little girls made of?
   Sugar and spice
   And all things nice
   That's what little girls are made of
   

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7. Powered by Rabbit 2.1.9
   　
   What is software made of?
   

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8. Powered by Rabbit 2.1.9
   　
   First Ingredient
   

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9. Powered by Rabbit 2.1.9
   　
   Hardware
   

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10. Powered by Rabbit 2.1.9
    　
    Hardware can exist without
    Software
    

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11. Powered by Rabbit 2.1.9
    　
    

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12. Powered by Rabbit 2.1.9
    　
    No Software can exist without
    Hardware
    

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13. Powered by Rabbit 2.1.9
    　
    Not 100% True
    

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14. Powered by Rabbit 2.1.9
    　
    But Mostly True
    

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15. Powered by Rabbit 2.1.9
    　
    My first computer
    

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16. Powered by Rabbit 2.1.9
    　
    

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17. Powered by Rabbit 2.1.9
    　
    4bit CPU
    BASIC
    1400 Steps
    26 Variables
    

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18. Powered by Rabbit 2.1.9
    　
    Poor Computer
    

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19. Powered by Rabbit 2.1.9
    　
    It's 37 years ago
    

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20. Powered by Rabbit 2.1.9
    　
    The Computer has been evolving
    so fast!
    

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21. Powered by Rabbit 2.1.9
    　
    Faster CPU
    More memory
    More storage
    Wider bandwidth
    

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22. Powered by Rabbit 2.1.9
    　
    The Computer I was using when I
    started Ruby (1993)
    

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23. Powered by Rabbit 2.1.9
    　
    Engineering Work Station
    

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24. Powered by Rabbit 2.1.9
    　
    SONY NEWS (NWS-831)
    

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25. Powered by Rabbit 2.1.9
    　
    CPU: 68020 16MHz
    MEM: 8MB
    HDD: 156MB
    

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26. Powered by Rabbit 2.1.9
    　
    Cost: 20,000USD
    

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27. Powered by Rabbit 2.1.9
    　
    2016
    

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28. Powered by Rabbit 2.1.9
    　
    Lenovo Thinkpad T460s
    

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29. Powered by Rabbit 2.1.9
    　
    CPU: Core i7 (2.6GHz)
    MEM: 20GB
    HDD: 1TB (SSD)
    

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30. Powered by Rabbit 2.1.9
    　
    Cost: 2,000USD
    

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31. Powered by Rabbit 2.1.9
    　
    CPU: 325x
    

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32. Powered by Rabbit 2.1.9
    　
    MEM: 2500x
    

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33. Powered by Rabbit 2.1.9
    　
    HDD: 6410x
    

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34. Powered by Rabbit 2.1.9
    　
    Now Computers are Fast!
    

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35. Powered by Rabbit 2.1.9
    　
    The problem is..
    

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36. Powered by Rabbit 2.1.9
    　
    Grand Illusion
    

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37. Powered by Rabbit 2.1.9
    　
    1. Moore's Law
    

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38. Powered by Rabbit 2.1.9
    　
    The number of transistors in LSI
    doubles every 18 months= 　
    

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39. Powered by Rabbit 2.1.9
    　
    

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40. Powered by Rabbit 2.1.9
    　
    2. Cores
    

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41. Powered by Rabbit 2.1.9
    　
    Multi Cores
    

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42. Powered by Rabbit 2.1.9
    　
    The end of free lunch
    

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43. Powered by Rabbit 2.1.9
    　
    Concurrency
    

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44. Powered by Rabbit 2.1.9
    　
    Concurrency is hard
    

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45. Powered by Rabbit 2.1.9
    　
    3. Caches
    

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46. Powered by Rabbit 2.1.9
    　
    Variables≒Memory
    

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47. Powered by Rabbit 2.1.9
    　
    Memory Model
    Registers
    Memory (Stack+Heap)
    

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48. Powered by Rabbit 2.1.9
    　
    Real Memory Model
    Registers
    Caches
    Memory (Stack+Heap)
    Storage
    

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49. Powered by Rabbit 2.1.9
    　
    Registers (1x)
    L1 Caches (4x)
    L2 Caches (10x)
    L3 Caches (40x)
    Memory (100x)
    Storage (20Mx)
    

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50. Powered by Rabbit 2.1.9
    　
    Developers (sometimes) need to
    fight with illusion
    

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51. Powered by Rabbit 2.1.9
    　
    Next Ingredient
    

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52. Powered by Rabbit 2.1.9
    　
    Languages
    

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53. Powered by Rabbit 2.1.9
    　
    Language = Grammar +
    Vocabulary
    

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54. Powered by Rabbit 2.1.9
    　
    Language = Syntax + Library
    

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55. Powered by Rabbit 2.1.9
    　
    How to express your idea
    

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56. Powered by Rabbit 2.1.9
    　
    Communication between
    humans and machines
    

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57. Powered by Rabbit 2.1.9
    　
    The tool to form your idea
    

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58. Powered by Rabbit 2.1.9
    　
    The tool to boost your brain
    

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59. Powered by Rabbit 2.1.9
    　
    Sapir-Whorf hypothesis
    

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60. Powered by Rabbit 2.1.9
    　
    human thoughts are influenced
    by (spoken) languages
    

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61. Powered by Rabbit 2.1.9
    　
    Languages influence human
    thought, more than you think
    

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62. Powered by Rabbit 2.1.9
    　
    Languages matter
    

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63. Powered by Rabbit 2.1.9
    　
    The evolution of programming
    languages
    

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64. Powered by Rabbit 2.1.9
    　
    More abstract
    

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65. Powered by Rabbit 2.1.9
    　
    More concise
    

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66. Powered by Rabbit 2.1.9
    　
    Less code
    

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67. Powered by Rabbit 2.1.9
    　
    Easier to write
    

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68. Powered by Rabbit 2.1.9
    　
    Easier to read
    

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69. Powered by Rabbit 2.1.9
    　
    More productive
    

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70. Powered by Rabbit 2.1.9
    　
    Abstraction
    

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71. Powered by Rabbit 2.1.9
    　
    Hide internal detail
    

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72. Powered by Rabbit 2.1.9
    　
    Illusion
    

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73. Powered by Rabbit 2.1.9
    　
    Languages create illusion
    

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74. Powered by Rabbit 2.1.9
    　
    Developers (sometimes) need to
    play with illusion
    

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75. Powered by Rabbit 2.1.9
    　
    Illusion that make you productive
    

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76. Powered by Rabbit 2.1.9
    　
    Illusion that make you consume
    less brain power
    

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77. Powered by Rabbit 2.1.9
    　
    Productivity matters
    

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78. Powered by Rabbit 2.1.9
    　
    Productivity solves most of
    problems
    

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79. Powered by Rabbit 2.1.9
    　
    Productivity make work work less
    

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80. Powered by Rabbit 2.1.9
    　
    Productivity make work earn
    more
    

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81. Powered by Rabbit 2.1.9
    　
    Productivity bring you success
    

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82. Powered by Rabbit 2.1.9
    　
    Last Ingredient
    

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83. Powered by Rabbit 2.1.9
    　
    Developers Community
    

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84. Powered by Rabbit 2.1.9
    　
    Programmers
    

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85. Powered by Rabbit 2.1.9
    　
    People
    

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86. Powered by Rabbit 2.1.9
    　
    Programming is a human thing
    

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87. Powered by Rabbit 2.1.9
    　
    Machines don't program
    

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88. Powered by Rabbit 2.1.9
    　
    At least yet
    

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89. Powered by Rabbit 2.1.9
    　
    We are not machines
    

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90. Powered by Rabbit 2.1.9
    　
    Difference?
    

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91. Powered by Rabbit 2.1.9
    　
    Heart
    

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92. Powered by Rabbit 2.1.9
    　
    Desire
    

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93. Powered by Rabbit 2.1.9
    　
    Machines do not desire anything
    

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94. Powered by Rabbit 2.1.9
    　
    We program because we want
    something
    

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95. Powered by Rabbit 2.1.9
    　
    Passion
    

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96. Powered by Rabbit 2.1.9
    　
    Machines do not have passion
    

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97. Powered by Rabbit 2.1.9
    　
    We keep programming because
    we have passion
    

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98. Powered by Rabbit 2.1.9
    　
    20+ years of Ruby development
    

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99. Powered by Rabbit 2.1.9
    　
    Anger
    

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100. Powered by Rabbit 2.1.9
     　
     We (sometimes) program
     because we get angry at
     something
     

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101. Powered by Rabbit 2.1.9
     　
     3 Virtues of Programmers
     Laziness
     Impatient
     Hubris
     

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102. Powered by Rabbit 2.1.9
     　
     Weakness
     

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103. Powered by Rabbit 2.1.9
     　
     Weak memory
     

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104. Powered by Rabbit 2.1.9
     　
     Weak will
     

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105. Powered by Rabbit 2.1.9
     　
     Weak mind
     

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106. Powered by Rabbit 2.1.9
     　
     Weakness is the reason we need
     illusion
     

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107. Powered by Rabbit 2.1.9
     　
     Community
     

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108. Powered by Rabbit 2.1.9
     　
     Communication
     

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109. Powered by Rabbit 2.1.9
     　
     Collaboration
     

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110. Powered by Rabbit 2.1.9
     　
     Motivation
     

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111. Powered by Rabbit 2.1.9
     　
     They made Ruby possible
     

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112. Powered by Rabbit 2.1.9
     　
     They made other great software
     

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113. Powered by Rabbit 2.1.9
     　
     They will make your software
     

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114. Powered by Rabbit 2.1.9
     　
     Summary
     

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115. Powered by Rabbit 2.1.9
     　
     What is software made of?
     Hardware and languages
     And developers community
     That's what is software made of?
     

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116. Powered by Rabbit 2.1.9
     　
     Hardware
     

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117. Powered by Rabbit 2.1.9
     　
     Languages
     

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118. Powered by Rabbit 2.1.9
     　
     Community
     

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119. Powered by Rabbit 2.1.9
     　
     Happy Hacking!
     

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120. Powered by Rabbit 2.1.9
     　
     A Few More Things
     

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121. Powered by Rabbit 2.1.9
     　
     Ruby3
     

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122. Powered by Rabbit 2.1.9
     　
     Concurrency
     Performance
     Static Analysis
     

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123. Powered by Rabbit 2.1.9
     　
     mruby
     

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124. Powered by Rabbit 2.1.9
     　
     Streem
     

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125. Powered by Rabbit 2.1.9
     　
     Happy Hacking!
     

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