Fun with Elixir and the Erlang VM

Transcript

1. ELIXIR and the Erlang VM Fun with

2. YAWNT Hey, i’m on  & 

3. NODEJITSU I do  at

4. LAZY Erlang concepts for the and the IMPATIENT

5. functional Erlang is a language

6. awesome As such, it has lots of features

7. data Functions are

8. REcursion It uses to solve problems

9. Guards

10. pattern matching

11. Referential transparency

12. PROCESSes... But

13. Unique ... make Erlang

14. concurrent Processes are

15. MESSAGES They use to communicate

16. picture shamelessly ripped from learnyousomEerlang

17. PEOPLE Processes are like

18. indEpendent They are

19. fault They are tolerant

20. isolated They are

21. distributed They are

22. BEAM Why a language on VM ? Recap

23. concurrent It is and DISTRIBUTED

24. FAULT tolerant It is

25. OTP It can use

26. None

27. OLD But Erlang is

28. macros Silly

29. syntax Clunky

30. flexibility Little

31. None

32. Modern What if we could use a language

33. None

34. $ git clone \ https://github.com/elixir-lang/elixir.git \ .elixir $ cd .elixir

    $ make test $ echo "PATH=$HOME/.elixir/bin" >> .zshrc $ source .zshrc

35. “ Elixir is a metaprogrammable, functional language built atop the

    Erlang VM. It is a dynamic language with hygIenic macros that leverages Erlang's ability to build concurrent, distributed, and fault-tolerant applications with hot code upgrades.“ @JosEValim

36. GOODNESS All the Erlang

37. PLUS

38. SYNTAX It has Ruby-inspired

39. defmodule Hi do def greetings do IO.puts "hi 33dev!" end

    end

40. FRIENDLY It is DSL

41. defmodule ATest do use ExUnit.Case test "true should be true"

    do assert(true == true) end end

42. MACROS It has powerful

43. defmodule MacroTest do defmacro if_not(pred, block) do quote do if(!unquote(pred))

    do unquote(block) end end end def try_unless do if_not 1==2 do IO.puts "hey" end end end

44. protocols It has

45. defprotocol Blank do def blank?(data) end defimpl Blank, for: List

    do def blank?([]), do: true def blank?(_), do: false end

46. Records It has sane

47. defrecord Trento, [people: nil, students: 0] do def get_people(city) do

    city.people end end

48. “ Elixir is the son of ERLANG and RUBY, but

    Ruby missed out and the real father is LisP.“ @DCH__
49. None

50. questions? or hit me up later

51. </talk> Thanks for listening

52. NEXT  this talk  Erlang/OTP in Action  elixir-lang.org

     Elixir google groups  Programming Elixir