Question

I am trying to do some simple text processing in Haskell, and I am wondering what might me the best way to go about this in an FP language. I looked at the parsec module, but this seems much more sophisticated than I am looking for as a new Haskeller. What would be the best way to strip all the punctuation from a corpus of text? My naive approach was to make a function like this:

removePunc str = [c | c <- str, c /= '.',
                                 c /= '?',
                                 c /= '.',
                                 c /= '!',
                                 c /= '-',
                                 c /= ';',
                                 c /= '\'',
                                 c /= '\"',]

Answer 1

You can simply write your code:

removePunc = filter (`notElem` ".?!-;\'\"")

or

removePunc = filter (flip notElem ".?!-;\'\"")