s3itz · February 24, 2016 00:59
diff --git a/swap.exs b/swap.exs
 defmodule Swapper do
  def swap([]), do: []
  def swap([a,b | tail]), do: [b, a | swap(tail)]
  def swap([_]), do: raise "Can't swap a list with an odd number of elements"
 end
	defmodule Swapper do
	def swap([]), do: []
	def swap([a,b \| tail]), do: [b, a \| swap(tail)]
	def swap([_]), do: raise "Can't swap a list with an odd number of elements"
	end