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

Transcript

1. functional, concurrent, distributed programming for the rest of us ELIXIR
2. @whatyouhide
7. functional, concurrent, distributed programming for the rest of us ELIXIR
8. LET'S BUILD A LANGUAGE
9. Language for modern systems
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 +
23. pattern matching
24. {1, _} = some_tuple
25. receive do {1, _} -> ... {_, _} -> ... end
27. case expression do pattern1 -> ... pattern2 -> ... _ -> ... end
28. ISOLATED MEMORY MESSAGE PASSING +
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
38. link
39. link
40. link
41. link trap crash
42. link trap crash trap crash
45. SUPERVISORS
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