comonad questions

comonad answers

• defining an unusual 2-D array in C++
• Converting IO Int to Int
• Creating functions over Enumerations
• Total function of type (forall n . Maybe (f n)) -> Maybe (forall n . (f n))
• Haskell: Record Update for Existential Types
• Pure exceptions in Haskell
• Turning requestAnimationFrame into an Event t ()
• Can this be done with STM?
• Why can't I define a Haskell Arrow instance in terms of arr and *** / &&&
• Kotlin: Tail recursion for mutually recursive functions