Elixir FizzBuzz

fizzbuzz.exs

defmodule FizzBuzz do
  def write(i) when (rem(i, 3) == 0 and rem(i, 5) == 0) do
    IO.puts "FizzBuzz"
  end

  def write(i) when rem(i, 3) == 0 do
    IO.puts "Fizz"
  end

  def write(i) when rem(i, 5) == 0 do
    IO.puts "Buzz"
  end

  def write(i) do
    IO.puts i
  end

end

Enum.map(1..20, fn x -> FizzBuzz.write(x) end)