Re: Proposal: Add a catamorphism on Trees

+1 from me as well. I think I'm unlikely to ever turn down a straightforward catamorphism or anamorphism. On Wed, May 18, 2016, 8:52 AM Alp Mestanogullari wrote:

+1, have implemented it in a few occasions already.

On Tue, May 17, 2016 at 11:03 PM, David Feuer wrote:

...

Daniel Wagner would like to add the following straightforward function to Data.Tree. I think this is a grand idea.

foldTree :: (a -> [b] -> b) -> Tree a -> b foldTree f = go where go (Node x ts) = f x (map go ts) _______________________________________________ Libraries mailing list Libraries@haskell.org http://mail.haskell.org/cgi-bin/mailman/listinfo/libraries

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