Example of how inline Objective-C in Haskell might look like.

InlineObjC.hs

dumpURL :: String -> IO ()
dumpURL urlString
  = do
    { urlData <- $objc 'urlString [cstm| {
                   return [NSString stringWithContentsOfURL: [NSURL urlWithString: urlString] 
                                    encoding: NSUTF8StringEncoding 
                                    error: NULL];
                 } |]
    ; putStr urlData
    }