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\clearpage
\section{Misc. utility functions}
\ignore{
\begin{code}
module DBus.Types.Util
( checkLength
, parseMaybe
) where
import Text.Parsec (Parsec, parse)
\end{code}
}
\begin{code}
checkLength :: Int -> String -> Maybe String
checkLength length' s | length s <= length' = Just s
checkLength _ _ = Nothing
\end{code}
\begin{code}
parseMaybe :: Parsec String () a -> String -> Maybe a
parseMaybe p = either (const Nothing) Just . parse p ""
\end{code}