Data update

Task/Queue-Usage/Elixir/queue-usage-1.ex

@@ -0,0 +1,10 @@
+defmodule Queue do
+  def empty?([]), do: true
+  def empty?(_), do: false
+
+  def pop([h|t]), do: {h,t}
+
+  def push(q,t), do: q ++ [t]
+
+  def front([h|_]), do: h
+end