A Completely Unbiased Showcase of Elixir

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UNBIASED A COMPLETELY SHOWCASE OF ELIXIR

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L F E OVEABLE, UN RLANG

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ERLANG FOR HIPSTERS 2.0?

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javascript/coffescript java/clojure javascript/elm

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javascript/coffescript java/clojure javascript/elm ✓

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.BEAM

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1.0 September 2014 1.3 September 2016

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GOOD STUFF IMPROVABLE STUFF ELIXIR + ERLANG

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@whatyouhide

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FOOTBALL ADDICTS

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GOOD STUFF IMPROVABLE STUFF ELIXIR + ERLANG

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GOOD STUFF IMPROVABLE STUFF ELIXIR + ERLANG

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STANDARD LIBRARY

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STREAMS

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STREAMS "foo.txt" |> File.stream! |> Stream.map(...) |> Stream... |> Enum.to_list

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METAPROGRAMMING

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defmacro unless(cond, expr) do quote do if !unquote(cond) do unquote(expr) end end end

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defmacro unless(cond, expr) do quote do if !unquote(cond) do unquote(expr) end end end

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STRUCTS "official" data types

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defmodule User do defstruct [:name, :age] end %User{name: "Meg", age: 33}

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PROTOCOLS

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JSON encoding json:encode({user, ...}) user:encode({...})

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JSON encoding defprotocol JSON do def encode(_) end defimpl JSON, for: User do def encode(user), do: ... end

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ExUnit test "send/2" do send(self(), {:ok, 1}) assert_receive {:ok, _} end

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ExUnit test "send/2" do send(self(), {:ok, 1}) assert_receive {:ok, _} end

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tagging diff --stale

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--stale don't run stale stinky tests

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INTEROP WITH ERLANG for doing Real Work™

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lists:map(fun(X) -> X + 1 end, [1, 2, 3]) :lists.map(fn(x) -> x + 1 end, [1, 2, 3])

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Enum.shuffle([1, 2, 3]) 'Elixir.Enum':shuffle([1, 2, 3])

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MIX

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DOCUMENTATION @doc """ Performs command """ def command(c), do: ...

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DOCUMENTATION

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ONBOARDING Getting Started guide Resources (books, ...) Error messages

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ECOSYSTEM Phoenix Nerves Ecto, Plug, GenStage, ...

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COMMUNITY

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GOOD STUFF IMPROVABLE STUFF ELIXIR + ERLANG

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DIALYZER

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PROPERTY-BASED TESTING

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USING ELIXIR FROM ERLANG

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GOOD STUFF IMPROVABLE STUFF ELIXIR + ERLANG

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just an app

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WHICH ONE DO I USE ELIXIR ELIXIR ELIXIR ELIXIR ELIXIR ELIXIR ELIXIR

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APPRECIATE BOTH

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POSSIBLE RULE OF THUMB libraries in Erlang (if they wouldn't benefit from Elixir features) apps in Elixir /

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hex.pm Erlang + Elixir

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GOOD STUFF IMPROVABLE STUFF ELIXIR <3 ERLANG STDLIB EXUNIT METAPROGRAMMING PROTOCOLS MIX DOCS ECOSYSTEM DIALYZER PROPERTY-BASED TESTS ELIXIR FROM ERLANG USE BOTH SHARE ON HEX BE NICE

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@whatyouhide