Elixir - functional, concurrent, distributed programming for the rest of us

Transcript

1. functional, concurrent, distributed programming for the rest of us ELIXIR

2. @whatyouhide

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7. functional, concurrent, distributed programming for the rest of us ELIXIR

8. LET'S BUILD A LANGUAGE

9. Language for modern systems

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11. concurrent distributed fault-tolerant extensible

12. don't give to devs, enable devs

13. VM

14. NO TYPE SYSTEM

15. CONCURRENCY

16. threads are heavy

17. schedulers VM processes

18. memory memory

19. IMMUTABLE DATA

20. MESSAGE PASSING

21. send(pid, message) receive do ... end +

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23. pattern matching

24. {1, _} = some_tuple

25. receive do {1, _} -> ... {_, _} -> ...

    end
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27. case expression do pattern1 -> ... pattern2 -> ... _

    -> ... end

28. ISOLATED MEMORY MESSAGE PASSING +

29. None

30. def loop(state) do receive do new_state -> loop(new_state) end end

31. DISTRIBUTION

32. node 1 node 2

33. FAULT TOLERANCE

34. acceptor

35. acceptor

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38. link

39. link

40. link

41. link trap crash

42. link trap crash trap crash

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45. SUPERVISORS

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50. SYNTAX

51. github.com/josevalim/lego-lang

52. def(double_sum(a, b), do: ( =(c, +(a, b)) *(c, 2) ))

53. def(double_sum(a, b), do: ( =(c, +(a, b)) *(c, 2) ))

54. def(double_sum(a, b), do: ( =(c, +(a, b)) *(c, 2) ))

55. def(double_sum(a, b), do: ( =(c, +(a, b)) *(c, 2) ))

56. if(>(a, b), do: a, else: b)

57. macros functions +

58. less parens?

59. def(double_sum(a, b), do: ( =(c, +(a, b)) *(c, 2) ))

60. def(double_sum(a, b), do: ( c = a + b c

    * 2 ))

61. def double_sum(a, b), do: ( c = a + b

    c * 2 )

62. def double_sum(a, b) do c = a + b c

    * 2 end

63. if a > b do a else b end

64. literals and containers

65. [1, 2, 3] [](1, 2, 3)

66. macros functions +

67. def add(a, b), do: a + b

68. defmacro def(call, keywords) add(a, b) do: (a + b)

69. case expression do true -> branch1 else -> branch2 end

70. defmacro if(condition, do: branch1, else: branch2) do quote do case

    unquote(condition) do true -> unquote(branch1) false -> unquote(branch2) end end end

71. CONLCLUSION

72. PLOT TWIST... we built ELIXIR

73. concurrent distrubuted fault-tolerant extensible

74. elixir-lang.org @whatyouhide