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

No, that is not a way now that we have FTP. On Wed, Feb 25, 2015 at 7:31 PM, Kazu Yamamoto wrote:

...

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?

That is one way but I think another way is to make foldl strict:

http://www.well-typed.com/blog/90/

I'm tired of explaining the difference of foldl and foldl' to beginners. :-)

--Kazu _______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries