)
where
-import Data.List hiding (last)
+import Control.Monad
+import Data.List hiding (last)
import Network.URI
-import Prelude hiding (last)
+import Prelude hiding (last)
-- |> splitBy (== ':') "ab:c:def"
-- > ==> ["ab", "c", "def"]
-- |> joinWith ":" ["ab", "c", "def"]
-- > ==> "ab:c:def"
joinWith :: [a] -> [[a]] -> [a]
-joinWith separator xs
- = separator `seq` xs `seq`
- foldr (++) [] $! intersperse separator xs
+joinWith = (join .) . intersperse
-- |> trim (== '_') "__ab_c__def___"
-- > ==> "ab_c__def"
trim :: (a -> Bool) -> [a] -> [a]
-trim p = p `seq` trimTail . trimHead
+trim !p = trimTail . trimHead
where
trimHead = dropWhile p
trimTail = reverse . trimHead . reverse
-- > quoteStr "ab\"c"
-- > ==> "\"ab\\\"c\""
quoteStr :: String -> String
-quoteStr str = str `seq`
- foldr (++) "" (["\""] ++ map quote str ++ ["\""])
+quoteStr !str = concat (["\""] ++ map quote str ++ ["\""])
where
quote :: Char -> String
quote '"' = "\\\""