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A Completely Unbiased Showcase of Elixir
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Andrea Leopardi
September 09, 2016
Programming
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A Completely Unbiased Showcase of Elixir
Andrea Leopardi
September 09, 2016
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Transcript
UNBIASED A COMPLETELY SHOWCASE OF ELIXIR
None
L F E OVEABLE, UN RLANG
ERLANG FOR HIPSTERS 2.0?
javascript/coffescript java/clojure javascript/elm
javascript/coffescript java/clojure javascript/elm ✓
.BEAM
1.0 September 2014 1.3 September 2016
GOOD STUFF IMPROVABLE STUFF ELIXIR + ERLANG
@whatyouhide
FOOTBALL ADDICTS
GOOD STUFF IMPROVABLE STUFF ELIXIR + ERLANG
GOOD STUFF IMPROVABLE STUFF ELIXIR + ERLANG
STANDARD LIBRARY
STREAMS
STREAMS "foo.txt" |> File.stream! |> Stream.map(...) |> Stream... |> Enum.to_list
METAPROGRAMMING
defmacro unless(cond, expr) do quote do if !unquote(cond) do unquote(expr)
end end end
defmacro unless(cond, expr) do quote do if !unquote(cond) do unquote(expr)
end end end
STRUCTS "official" data types
defmodule User do defstruct [:name, :age] end %User{name: "Meg", age:
33}
PROTOCOLS
JSON encoding json:encode({user, ...}) user:encode({...})
JSON encoding defprotocol JSON do def encode(_) end defimpl JSON,
for: User do def encode(user), do: ... end
ExUnit test "send/2" do send(self(), {:ok, 1}) assert_receive {:ok, _}
end
ExUnit test "send/2" do send(self(), {:ok, 1}) assert_receive {:ok, _}
end
tagging diff --stale
None
--stale don't run stale stinky tests
INTEROP WITH ERLANG for doing Real Work™
lists:map(fun(X) -> X + 1 end, [1, 2, 3]) :lists.map(fn(x)
-> x + 1 end, [1, 2, 3])
Enum.shuffle([1, 2, 3]) 'Elixir.Enum':shuffle([1, 2, 3])
MIX
DOCUMENTATION @doc """ Performs command """ def command(c), do: ...
DOCUMENTATION
ONBOARDING Getting Started guide Resources (books, ...) Error messages
ECOSYSTEM Phoenix Nerves Ecto, Plug, GenStage, ...
COMMUNITY
GOOD STUFF IMPROVABLE STUFF ELIXIR + ERLANG
DIALYZER
PROPERTY-BASED TESTING
USING ELIXIR FROM ERLANG
GOOD STUFF IMPROVABLE STUFF ELIXIR + ERLANG
just an app
WHICH ONE DO I USE ELIXIR ELIXIR ELIXIR ELIXIR ELIXIR
ELIXIR ELIXIR
APPRECIATE BOTH
POSSIBLE RULE OF THUMB libraries in Erlang (if they wouldn't
benefit from Elixir features) apps in Elixir /
hex.pm Erlang + Elixir
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
@whatyouhide