[Elixir]キューを実装してみた ref: http://qiita.com/tamanugi/items/85072766377fc6475935

file1.txt

iex(1)> QueueEx.Queue.start_link
{:ok, #PID<0.124.0>}
iex(2)> QueueEx.Queue.add 1
:ok
iex(3)> QueueEx.Queue.add 2
:ok
iex(4)> QueueEx.Queue.add 3
:ok
iex(5)> QueueEx.Queue.add 3
:ok
iex(6)> QueueEx.Queue.pop
1
iex(7)> QueueEx.Queue.pop
2
iex(8)> QueueEx.Queue.pop
3

queue.ex

defmodule Queue do
  @name __MODULE__

  def start_link, do: Agent.start_link(fn -> [] end, name: @name)
  def add(job), do: Agent.update(@name, fn queue -> queue ++ [job] end)
  def pop, do: Agent.get_and_update(@name, fn [head | tail] -> {head, tail})

end