Re: [Haskell-cafe] better way to do this?

If I understand correctly, this works because IO is an instance of Applicative, correct? I wonder if any of the random monads are instances of Applicative. Felipe Lessa wrote:

On Sun, Oct 04, 2009 at 01:55:11PM +0400, Eugene Kirpichov wrote:

...

[x,y,t,b,l,r] <- mapM (getStdRandom . randomR) [(-10,10), (-70,70), ...] return (BoxBounds ...)

import Control.Applicative

let f = getStdRandom . randomR g1 = \x -> f (-x,x) g2 = f (5,10) in BoxBounds <$> g1 10 <*> g1 70 <*> g2 <*> g2 <*> g2 <*> g2

-- Felipe. _______________________________________________ Haskell-Cafe mailing list Haskell-Cafe@haskell.org http://www.haskell.org/mailman/listinfo/haskell-cafe