chi questions

chi answers

• Does indexing a mapped/filtered infinite list apply the map/filter function to all the elements before the index?
• Can a polymorphic constant be mapped over a list of *types*?
• Foldl vs Foldr memory usage
• Phantom Types in Haskell
• Why there is no output for wrapped IO in Haskell?
• Function types as MonadReader
• How to apply a traversable of functions to a one value
• Concat two lists definition with fold
• Next element in a list
• Make constrained functions a typeclass instance