Fun with Elixir and the Erlang VM

Introduction to Elixir, a metaprogramming friendly language that runs on the top of 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
27. OLD But Erlang is
28. macros Silly
29. syntax Clunky
30. flexibility Little
32. Modern What if we could use a language
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__
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