nth functions for elixir

  @doc """
  This preforms an index lookup for data structures (tuple/list/Map)
  """
  def nth(index) do
    fn
      tuple when is_tuple(tuple) ->
        tuple |> elem(index)
      enum ->
        enum |> Enum.at(index)
    end
  end
  def nth(obj, index), do: nth(index).(obj)

  def first(list), do: nth(0).(list)
  def second(list), do: nth(1).(list)