defmodule Dataset do
  defstruct rows: [], labels: {}

  def new(rows \\ [], labels \\ {}) do
    %Dataset{rows: rows, labels: labels}
  end

  def to_map_list(_ds = %Dataset{rows: rows, labels: labels}) do
    for row <- rows do
      Map.new tuple_zip(labels, row)
    end
  end

  defp tuple_zip(t1, t2) do
    for i <- 0..tuple_size(t1)-1 do
      {elem(t1, i), elem(t2, i)}
    end
  end
end