[Haskell-cafe] Re: ANNOUNCE: The Monad.Reader - Issue 6

Wouter Swierstra wrote:

I pleased to announce that the latest issue of The Monad.Reader is now available: [...]

Horray, the long awaited new issue of my favorite breakfast reading is out!

* Bernie Pope - Getting a Fix from the Right Fold [...]

Concerning the strictness of dwBackwards, it suffices to make the pattern match on (ys,xs) irrefutable: dwBackwards predicate = fst . dwPairs predicate dwPairs :: (a -> Bool) -> [a] -> ([a], [a]) dwPairs predicate = foldr combine base where --> combine next ~(ys, xs) | predicate next = (ys, next:xs) | otherwise = (next:xs, next:xs) base = ([], []) Regards, apfelmus