DDub questions

DDub answers

• Does indexing a mapped/filtered infinite list apply the map/filter function to all the elements before the index?
• Implementing Memoization efficiently on nonintegral keys
• How to combine and then branch in MonadPlus/Alternative
• mapA for stream processors which could block (asynchronous circuits)
• Pattern synonyms as overloadable 'smart constructors'
• Why does using PatternSynonyms trigger a non-exhaustive match warning?
• Haskell save recursive steps into a list
• Flip functor instance Haskell
• A way to generalize Haskell's Either type for arbitrarily many types?
• Is it possible to establish Coercible instances between custom types and standard library ones?