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Utility to convert values between different units of the same kind. Extremely easy to extend and to use.

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ex_uc lib units speed.ex
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lib/units/speed.ex 

defmodule ExUc.Units.Speed do

  @moduledoc """

  Defines units and conversions for the Speed kind.

  """

  @behaviour ExUc.Kind



  def units do

    [

      mps: ["m/s", "meters per second"],

      kmph: ["km/h", "kilometers per hour"],

      miph: ["mi/h", "mph", "miles per hour"],

      kn: ~w(knot knots kt)

    ]

  end



  def conversions do

    [

      kmph_to_mps: 0.28,

      kmph_to_miph: 0.62,

      kn_to_mps: 0.51

    ]

  end

end