(+1) on foldl', (-1) on foldr' for the reasons outlined in the other mailing list.

On 02/24/2015 02:42 PM, Bob Ippolito wrote:

(Cross-posted from haskell-cafe as suggested by Carter Schonwald)

I would love to have foldl' as part of the Prelude. I use it quite frequently and it seems like a beginner trap to have foldl but not foldl' (which is almost always the better choice). I see that foldMap has been added (in addition to all of Monoid and Traversable), why was foldl' left out?

It might be good measure to add foldr' as well, although I use that much less frequently.

-bob

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