Catstore

catstore.ex

defmodule Catstore do
  def start() do
    {:ok, store} = Agent.start(fn -> ["Biggles"] end)
    store
  end

  def pr_cats(cats) do
    Enum.each(cats, fn cat -> IO.puts cat end)
  end

  def show_cats(store) do
    Agent.get(store, fn(cats) -> pr_cats(cats) end)
  end

  def add_cat(store, cat) do
    Agent.update(store, fn(cats) -> [ cat | cats] end)
  end
end