30 Sep
2010
30 Sep
'10
12:28 a.m.
On 09/29/2010 09:13 PM, Alexander Solla wrote:
On 09/29/2010 02:15 PM, DavidA wrote:
instance Monad (\v -> Vect k (Monomial v))
Yes, that is exactly what I am trying to say. And since I'm not allowed to say it like that, I was trying to say it using a type synonym parameterised over v instead.
Why not:
instance Monad ((->) Vect k (Monomial v))
Sorry, I guess this is a bit off. I don't think you "really" want a monad. I think you want something like the dual to the reader monad (i.e, a comonad)