Should foldl' be added to the post-"Plan FTP" Prelude

Alois Cochard alois.cochard at gmail.com
Wed Feb 25 20:26:42 UTC 2015


Same here (+1 foldl', -1 foldr')

On 24 February 2015 at 21:44, Chris Allen <cma at bitemyapp.com> wrote:

>  (+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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-- 
*Λ\ois*
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