Re: [Haskell-beginners] type of pattern matching

Hi Michael Untested - maybe you can use Record puns (section 7.3.15.of the GHC manual). Though they might only work if you have used field names in your data type. {} swaps for _ _ _ _ _ _ so it would be:

doSomething :: Maybe Result doSomething item = case item of note@(Note {}) -> Just $ process note _ -> Nothing