Re: Proposal: Add Foldable and Traversable instances for ((,) a)

Oops, correcting cut-and-paste error: Documentation for foldMapDefault: -- This function should be equivalent to `foldMap` in -- the `Foldable` superclass instance. If you do not -- already have a `Foldable` instance, you -- can use this function to define one: -- -- > instance Foldable T where -- > foldMap = foldMapDefault