30 Jan
2009
30 Jan
'09
10:24 a.m.
On Fri, Jan 30, 2009 at 03:05:52PM +0000, Neil Mitchell wrote:
You're only a Hoogle away: http://haskell.org/hoogle/?hoogle=liftA2
Control.Applicative liftA2 :: Applicative f => (a -> b -> c) -> f a -> f b -> f c
I guess its both an arrow function and an applicative function.
Ah, but this wasn't the function Henk was after. liftA2 on arrows is defined in the papers, but it's not in the library.