Strict folds without base case to `Data.Foldable`.

Simon Jakobi simon.jakobi at
Wed Jun 30 10:59:42 UTC 2021

This was discussed in December 2020:

Am Mi., 30. Juni 2021 um 12:49 Uhr schrieb Ignat Insarov <kindaro at>:
> Hello.
> I notice that in `"base" Data.Foldable` there are strict left and
> right folds, but no corresponding folds without base case, that is,
> `foldl1'` and `foldr1'`. Can this omission be ameliorated? The
> implementation is trivial.
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