Quiz

In the following code, what role does Point.left/1 play?

defmodule Point do
  def new() do
    {0, 0}
  end

  def left({x, y}) do
    {x+1, y}
  end

  def right({x, y}) do
    {x+1, y}
  end

  def as_string(point) do
    inspect(point)
  end
end