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

2. Powered by Rabbit 2.1.9 　 RubyConf India

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

4. Powered by Rabbit 2.1.9 　 What are little boys made

   of?

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

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

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

8. Powered by Rabbit 2.1.9 　 First Ingredient

9. Powered by Rabbit 2.1.9 　 Hardware

10. Powered by Rabbit 2.1.9 　 Hardware can exist without Software

11. Powered by Rabbit 2.1.9 　

12. Powered by Rabbit 2.1.9 　 No Software can exist without

    Hardware

13. Powered by Rabbit 2.1.9 　 Not 100% True

14. Powered by Rabbit 2.1.9 　 But Mostly True

15. Powered by Rabbit 2.1.9 　 My first computer

16. Powered by Rabbit 2.1.9 　

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

    26 Variables

18. Powered by Rabbit 2.1.9 　 Poor Computer

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

20. Powered by Rabbit 2.1.9 　 The Computer has been evolving

    so fast!

21. Powered by Rabbit 2.1.9 　 Faster CPU More memory More

    storage Wider bandwidth

22. Powered by Rabbit 2.1.9 　 The Computer I was using

    when I started Ruby (1993)

23. Powered by Rabbit 2.1.9 　 Engineering Work Station

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

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

    HDD: 156MB

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

27. Powered by Rabbit 2.1.9 　 2016

28. Powered by Rabbit 2.1.9 　 Lenovo Thinkpad T460s

29. Powered by Rabbit 2.1.9 　 CPU: Core i7 (2.6GHz) MEM:

    20GB HDD: 1TB (SSD)

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

31. Powered by Rabbit 2.1.9 　 CPU: 325x

32. Powered by Rabbit 2.1.9 　 MEM: 2500x

33. Powered by Rabbit 2.1.9 　 HDD: 6410x

34. Powered by Rabbit 2.1.9 　 Now Computers are Fast!

35. Powered by Rabbit 2.1.9 　 The problem is..

36. Powered by Rabbit 2.1.9 　 Grand Illusion

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

38. Powered by Rabbit 2.1.9 　 The number of transistors in

    LSI doubles every 18 months= 　

39. Powered by Rabbit 2.1.9 　

40. Powered by Rabbit 2.1.9 　 2. Cores

41. Powered by Rabbit 2.1.9 　 Multi Cores

42. Powered by Rabbit 2.1.9 　 The end of free lunch

43. Powered by Rabbit 2.1.9 　 Concurrency

44. Powered by Rabbit 2.1.9 　 Concurrency is hard

45. Powered by Rabbit 2.1.9 　 3. Caches

46. Powered by Rabbit 2.1.9 　 Variables≒Memory

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

48. Powered by Rabbit 2.1.9 　 Real Memory Model Registers Caches

    Memory (Stack+Heap) Storage

49. Powered by Rabbit 2.1.9 　 Registers (1x) L1 Caches (4x)

    L2 Caches (10x) L3 Caches (40x) Memory (100x) Storage (20Mx)

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

    with illusion

51. Powered by Rabbit 2.1.9 　 Next Ingredient

52. Powered by Rabbit 2.1.9 　 Languages

53. Powered by Rabbit 2.1.9 　 Language = Grammar + Vocabulary

54. Powered by Rabbit 2.1.9 　 Language = Syntax + Library

55. Powered by Rabbit 2.1.9 　 How to express your idea

56. Powered by Rabbit 2.1.9 　 Communication between humans and machines

57. Powered by Rabbit 2.1.9 　 The tool to form your

    idea

58. Powered by Rabbit 2.1.9 　 The tool to boost your

    brain

59. Powered by Rabbit 2.1.9 　 Sapir-Whorf hypothesis

60. Powered by Rabbit 2.1.9 　 human thoughts are influenced by

    (spoken) languages

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

    than you think

62. Powered by Rabbit 2.1.9 　 Languages matter

63. Powered by Rabbit 2.1.9 　 The evolution of programming languages

64. Powered by Rabbit 2.1.9 　 More abstract

65. Powered by Rabbit 2.1.9 　 More concise

66. Powered by Rabbit 2.1.9 　 Less code

67. Powered by Rabbit 2.1.9 　 Easier to write

68. Powered by Rabbit 2.1.9 　 Easier to read

69. Powered by Rabbit 2.1.9 　 More productive

70. Powered by Rabbit 2.1.9 　 Abstraction

71. Powered by Rabbit 2.1.9 　 Hide internal detail

72. Powered by Rabbit 2.1.9 　 Illusion

73. Powered by Rabbit 2.1.9 　 Languages create illusion

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

    with illusion

75. Powered by Rabbit 2.1.9 　 Illusion that make you productive

76. Powered by Rabbit 2.1.9 　 Illusion that make you consume

    less brain power

77. Powered by Rabbit 2.1.9 　 Productivity matters

78. Powered by Rabbit 2.1.9 　 Productivity solves most of problems

79. Powered by Rabbit 2.1.9 　 Productivity make work work less

80. Powered by Rabbit 2.1.9 　 Productivity make work earn more

81. Powered by Rabbit 2.1.9 　 Productivity bring you success

82. Powered by Rabbit 2.1.9 　 Last Ingredient

83. Powered by Rabbit 2.1.9 　 Developers Community

84. Powered by Rabbit 2.1.9 　 Programmers

85. Powered by Rabbit 2.1.9 　 People

86. Powered by Rabbit 2.1.9 　 Programming is a human thing

87. Powered by Rabbit 2.1.9 　 Machines don't program

88. Powered by Rabbit 2.1.9 　 At least yet

89. Powered by Rabbit 2.1.9 　 We are not machines

90. Powered by Rabbit 2.1.9 　 Difference?

91. Powered by Rabbit 2.1.9 　 Heart

92. Powered by Rabbit 2.1.9 　 Desire

93. Powered by Rabbit 2.1.9 　 Machines do not desire anything

94. Powered by Rabbit 2.1.9 　 We program because we want

    something

95. Powered by Rabbit 2.1.9 　 Passion

96. Powered by Rabbit 2.1.9 　 Machines do not have passion

97. Powered by Rabbit 2.1.9 　 We keep programming because we

    have passion

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

99. Powered by Rabbit 2.1.9 　 Anger

100. Powered by Rabbit 2.1.9 　 We (sometimes) program because we

     get angry at something

101. Powered by Rabbit 2.1.9 　 3 Virtues of Programmers Laziness

     Impatient Hubris

102. Powered by Rabbit 2.1.9 　 Weakness

103. Powered by Rabbit 2.1.9 　 Weak memory

104. Powered by Rabbit 2.1.9 　 Weak will

105. Powered by Rabbit 2.1.9 　 Weak mind

106. Powered by Rabbit 2.1.9 　 Weakness is the reason we

     need illusion

107. Powered by Rabbit 2.1.9 　 Community

108. Powered by Rabbit 2.1.9 　 Communication

109. Powered by Rabbit 2.1.9 　 Collaboration

110. Powered by Rabbit 2.1.9 　 Motivation

111. Powered by Rabbit 2.1.9 　 They made Ruby possible

112. Powered by Rabbit 2.1.9 　 They made other great software

113. Powered by Rabbit 2.1.9 　 They will make your software

114. Powered by Rabbit 2.1.9 　 Summary

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?

116. Powered by Rabbit 2.1.9 　 Hardware

117. Powered by Rabbit 2.1.9 　 Languages

118. Powered by Rabbit 2.1.9 　 Community

119. Powered by Rabbit 2.1.9 　 Happy Hacking!

120. Powered by Rabbit 2.1.9 　 A Few More Things

121. Powered by Rabbit 2.1.9 　 Ruby3

122. Powered by Rabbit 2.1.9 　 Concurrency Performance Static Analysis

123. Powered by Rabbit 2.1.9 　 mruby

124. Powered by Rabbit 2.1.9 　 Streem

125. Powered by Rabbit 2.1.9 　 Happy Hacking!