cool elixir shit

      # first_year_maker = fn(path) ->
      #   fn {current_year, acc} = tuple ->
      #     acc_con = Map.get(acc, path)
      #     con = get_in(current_year, path)
      #     year = current_year.year_index

      #     case {con, acc_con} do
      #       {0.0, nil} -> tuple
      #       {nil, nil} -> tuple
      #       {nil, _} -> tuple
      #       {_, acc_con} when is_number(acc_con) -> tuple
      #       {con ,nil} when con > 0 -> {current_year, Map.put(acc, path, year)}
      #     end
      #   end
      # end

      # #cool
      # rrsp_contribution = first_year_maker.([person, :accounts, :rrsp, :contribution])
      # tfsa_contribution = first_year_maker.([person, :accounts, :tfsa, :contribution])
      # non_reg_contribution = first_year_maker.([person, :accounts, :non_reg, :contribution])

      # result_list
      # |> Enum.reduce(%{}, fn cur, acc ->
      #   [
      #     rrsp_contribution,
      #     tfsa_contribution,
      #     non_reg_contribution
      #   ]
      #   |> Enum.reduce({cur, acc}, fn fun, params ->
      #     fun.(params)
      #   end)
      #   |> elem(1)
      # end)