[Haskell-cafe] what's the definition of satisfy and ? ?

I cannot understand the following code very well as i donot know the definition of satisfy and ?. -- | Case-insensitive variant of Parsec's 'char' function. caseChar:: Char - GenParser Char a Char caseChar c = satisfy (\x - toUpper x == toUpper c) -- | Case-insensitive variant of

[Haskell-cafe] How i use GHC.Word.Word8 wit Int ?

Hi, friends rollDice :: Word8 - IO Word8 rollDice n = do bracket (openFile /dev/random ReadMode) (hClose) (\hd - do v - fmap B.unpack (B.hGet hd 1) let v1 = Data.List.head v return $ (v1 `mod` n) + 1) . blueIdx - rollDice $ length [1..33]