This challenge is related to the Haskell language. Note that challenges that require the answers to be in a specific language are generally discouraged.
If you're new to golfing in Haskell, we recommend reading the user guide for golfing in Haskell. For submitting your answers you can use Haskell @ TryItOnline.net.
If you need help with golfing in Haskell,
- read Tips for golfing in Haskell
- try making functions pointless by using pointfree.io or doing it manually,
- join us in the PPCG Haskell chatroom Of Monads and Men.
