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

8 Mar 2015


      On Sat, Mar 7, 2015 at 6:08 PM, Ben Franksen  wrote:
...
David Feuer wrote:
...
FTP sets up the expectation that foldl has a specific relationship to
foldMap.
How does foldl have a more specific relationship with foldMap than foldl'?
Both are currently methods of class Foldable, BTW.
Yes, and each is expected to have a specific relationship to foldMap.
Changing the foldl for lists breaks that.

David