Petter Egesund
fun :: String -> String look for pat1 in string - if found subst with sub1 look for pat2 in string - if found subst with sub2 look for pat3 in string - if found subst with sub3 recurse until no pattern is found
I would structure this as replace :: String -> [String] -> String replace input patterns = ... At each position of input, check for the presence of patterns (use isPrefixOf) and conditionally replace it, else output first char of input and recurse on input's tail. This should make the function "online", so that it can be streamed over a large but lazy list (say a file read with "readFile" -- hurry up before Simon takes it away! :-) without explicitly constructing the whole input or output String. -kzm -- If I haven't seen further, it is by standing in the footprints of giants