Hello, Data.Char has functions for converting upper/lower case, and for testing if a character is alpha numeric.
http://www.haskell.org/ghc/docs/latest/html/libraries/base/Data-Char.html If you combine these with the map and filter functions you should be able to get it worked out: http://www.haskell.org/ghc/docs/latest/html/libraries/base/Data-List.html You probably want to attack it as two steps: (1) remove unwanted characters (2) convert to lower case Jeremy Shaw. ps. Remember that String is just an alias for [Char] in haskell. At Sun, 9 Apr 2006 16:59:19 -0700 (PDT), UnfitElf wrote: > > > Hi everyone, > > Im new to haskell and finding it quite hard to pickup as im a C/C++ > programmer however, im sticking with it as i think its a good thing to know. > > I have a problem were i have the user input a string, i then want to > disregard the punctuation marks and spaces and change the case of the string > to lower case. > > I was thinking that with the case i could work out the difference of the > capital 'A' and the small 'a' and then change them somehow? As for ignoring > punctuation marks and spaces im clueless. > > Thanks for any help > Daniel > -- > View this message in context: > http://www.nabble.com/Ignoring-input-t1422239.html#a3833983 > Sent from the Haskell - Haskell forum at Nabble.com. > > _______________________________________________ > Haskell mailing list > Haskell@haskell.org > http://www.haskell.org/mailman/listinfo/haskell _______________________________________________ Haskell mailing list Haskell@haskell.org http://www.haskell.org/mailman/listinfo/haskell
