My solution to the pragprog fizzbuzz exercise

fizzbuzz.ex

fizz_or_buzz = fn
    (0, 0, _) -> "FizzBuzz"
    (0, _, _) -> "Fizz"
    (_, 0, _) -> "Buzz"
    (_, _, x) -> "#{x}"
end

Enum.each 10..16, fn n ->
    IO.puts fizz_or_buzz.(rem(n, 3), rem(n, 5), n)
end