take-a-number

elixir/take-a-number/lib/take_a_number.ex

@@ -0,0 +1,15 @@
+defmodule TakeANumber do
+  def start() do
+    spawn(fn -> loop(0) end)
+  end
+
+  defp loop(number) do
+    new_state = receive do
+      :stop -> exit(:ok)
+      {:report_state, pid} -> send(pid, number)
+      {:take_a_number, pid} -> send(pid, number + 1)
+      _ -> number
+    end
+    loop(new_state)
+  end
+end