broke.exs

"some.CSV" |> File.read!() |> NimbleCSV.RFC4180.parse_string() |> Enum.group_by(fn t -> if(Enum.at(t, 2) =~ "Amazon", do: "Amazon" , else: Enum.at(t, 2)) end) |> Enum.map(fn {category, ts} -> {category, Enum.map(ts, &String.to_float(Enum.at(&1, 5)) |> abs()) |> Enum.sum} end) |> Enum.sort_by(fn {k, v} -> v end, :desc) |> inspect(pretty: true, limit: :infinity) |> IO.puts