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
   

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2. YAWNT
   Hey, i’m
   on  & 
   

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3. NODEJITSU
   I do  at
   

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4. LAZY
   Erlang concepts for the
   and the
   IMPATIENT
   

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5. functional
   Erlang is a
   language
   

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6. awesome
   As such, it has lots of
   features
   

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7. data
   Functions are
   

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8. REcursion
   It uses
   to solve problems
   

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9. Guards
   

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10. pattern
    matching
    

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11. Referential
    transparency
    

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12. PROCESSes...
    But
    

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13. Unique
    ... make Erlang
    

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14. concurrent
    Processes are
    

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15. MESSAGES
    They use
    to communicate
    

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16. picture shamelessly ripped from learnyousomEerlang
    

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17. PEOPLE
    Processes are like
    

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18. indEpendent
    They are
    

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19. fault
    They are
    tolerant
    

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20. isolated
    They are
    

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21. distributed
    They are
    

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22. BEAM
    Why a language on
    VM ?
    Recap
    

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23. concurrent
    It is
    and
    DISTRIBUTED
    

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24. FAULT
    tolerant
    It is
    

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25. OTP
    It can use
    

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27. OLD
    But Erlang is
    

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28. macros
    Silly
    

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29. syntax
    Clunky
    

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30. flexibility
    Little
    

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32. Modern
    What if we
    could use a
    language
    

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34. $ git clone \
    https://github.com/elixir-lang/elixir.git \
    .elixir
    $ cd .elixir
    $ make test
    $ echo "PATH=$HOME/.elixir/bin" >> .zshrc
    $ source .zshrc
    

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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
    

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36. GOODNESS
    All the Erlang
    

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37. PLUS
    

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38. SYNTAX
    It has Ruby-inspired
    

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

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40. FRIENDLY
    It is DSL
    

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41. defmodule ATest do
    use ExUnit.Case
    test "true should be true" do
    assert(true == true)
    end
    end
    

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42. MACROS
    It has powerful
    

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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
    

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44. protocols
    It has
    

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45. defprotocol Blank do
    def blank?(data)
    end
    defimpl Blank, for: List do
    def blank?([]), do: true
    def blank?(_), do: false
    end
    

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46. Records
    It has sane
    

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

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48. “ Elixir is the son of ERLANG and RUBY,
    but Ruby missed out and the real father
    is LisP.“
    @DCH__
    

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50. questions?
    or hit me up later
    

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51. 
    Thanks for listening
    

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

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