Proposal: Add a catamorphism on Trees

[Jake McArthur]

+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 <alpmestan at gmail.com>
wrote:

> +1, have implemented it in a few occasions already.
>
> On Tue, May 17, 2016 at 11:03 PM, David Feuer <david.feuer at gmail.com>
> 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)
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>
>
>
> --
> Alp Mestanogullari
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