weather.exs

defmodule WeatherHistory do
  def for_location_27([]), do: []
  def for_location_27([ [time, 27, temp, rain] | tail]), do: [ [time, 27, temp, rain] | for_location_27(tail)]
  def for_location_27([_|tail]), do: for_location_27(tail)

  #Generic location 
  def for_location([],_target_loc), do: []
  def for_location([ head=[_, target_loc, _, _] | tail], target_loc) do
    [head | for_location(tail, target_loc)]
  end
  def for_location([_|tail], target_loc), do: for_location(tail,target_loc)



  def test_data do 
    [
      
      [1366225622, 26, 15, 0.125],
      [1366225622, 27, 15, 0.45],
      [1366225622, 28, 21, 0.25],
      [1366229222, 26, 19, 0.081],
      [1366229222, 27, 17, 0.468],
      [1366229222, 28, 15, 0.60],
      [1366232822, 26, 22, 0.095],
      [1366232822, 27, 21, 0.05],
      [1366232822, 28, 24, 0.03],
      [1366236422, 26, 17, 0.025]
    ]
  end
  
end