Write a function prefix that takes a string. It should return a new function that takes a second string. When that second function is called, it will return a string containing the first string, a space, and the second string.
iex(1)> prefix = fn prefix ->
...(1)> ( fn body -> "#{prefix} #{body}" end)
...(1)> end
#Function<6.54118792/1 in :erl_eval.expr/5>
iex(2)> mrs = prefix.("Mrs")
#Function<6.54118792/1 in :erl_eval.expr/5>
iex(3)> mrs.("Smith")
"Mrs Smith"
iex(4)> prefix.("Elixir").("Rocks")
"Elixir Rocks"