splitOnList.hs

import Data.Char(isSpace)

-- splitOnTest (=='x') "AxBxC" -> ["A", "B", "C"]
splitOnTest :: (Char -> Bool) -> String -> [String]
splitOnTest = splitOnTest' [] 
  where splitOnTest' :: String -> (Char -> Bool) -> String -> [String]
        splitOnTest' acc _ [] = [(reverse acc)]
        splitOnTest' acc f (x:xs) | f x = [(reverse acc)] ++ splitOnTest f xs
                                  | otherwise = splitOnTest' (x:acc) f xs

-- splitOn 'x' "AxBxC" -> ["A", "B", "C"]
splitOn :: Char -> String -> [String]
splitOn ch = splitOnTest (==ch)

-- strip " A  " -> "A"
strip :: String -> String
strip = reverse . dropWhile isSpace . reverse . dropWhile isSpace

stringList :: [String] -> [(String, [Float])]
stringList s = stringList' [] $ map (map strip) $ map (splitOn ',') s
  where stringList' acc []     = reverse acc
        stringList' acc (x:xs) = stringList' ((s, ns):acc) xs
          where (s:ns') = x
                ns      = map (read :: String -> Float) ns'

testData = ["Adam, 3, 5, 2.3",
            "George, 20, 50.3, 100.0"]

main = putStrLn $ unlines $ map show $ stringList testData