Elixir fizzbuzz pattern matching

fizzbuzz.exs

defmodule Fizzbuzz do

  def fizzbuzzer(n) do

    case {rem(n, 3), rem(n, 5), n} do
      {0, 0, _} ->
        "FizzBuzz"
      {0, _, _} ->
        "Fizz"
      {_, 0, _} ->
        "Buzz" 
      {_, _, n} ->
        n
    end
  end

  def fizzbuzz(range) do
    if Range.range?(range) do
      range
        |> Enum.map(fn(n) -> fizzbuzzer(n) end)
	|> Enum.each(fn(x) -> IO.puts(x) end)
    else
      IO.puts("first parameter must be a range!")
    end
  end

end