Behaviour Preservation across Code Versions in Erlang

Listing 24

Fragment of lists:ukeysort/2 with io:format/2.

(1) ukeysort(I, L) when is_integer(I), I > 0 ->

(2) io:format("Input: ~", [L]),

(3) Res =

(4)  case L of

(5)  ...

(6)  end,

(7) io:format("Output: ~", [Res]),

(8) Res.