On Sat, Feb 1, 2014 at 12:08 PM, Mario Blažević <blamario@acanac.net> wrote:

On 01/28/14 21:25, Alvaro J. Genial wrote:

1. Is there a more general version of `null`? (e.g. for a Monad, Functor, Applicative, Traversable or the like.)

There is the MonoidNull class from my monoid-subclasses library. It comes with plenty of standard instances.

This is very nice as it seems to mesh with my current thinking; I may end up using it in Neat [1] shortly.

Thank you,

Alvaro

http://alva.ro

[1] https://github.com/ajg/neat