[Haskell-cafe] Re: Kleisli composition operator

[Duncan Coutts]

On Sun, 2008-08-03 at 15:31 +0000, Roly Perera wrote:
> Daniel Fischer <daniel.is.fischer <at> web.de> writes:
> 
> > Which implementation are you using?
> > IIRC, GHC didn't have it in Control.Monad before the 6.8 branch.
> 
> Duncan Coutts <duncan.coutts at worc.ox.ac.uk> writes:
> 
> > It's not in the Prelude but it is in Control.Monad in base version 3
> > and later. You're probably using an older GHC which has base version
> > 2.x.
> 
> Thanks for the quick responses.  Looks like I need to install a version later
> than 6.8.

GHC 6.8 comes with base-3 so has (>=>) in Control.Monad.

Duncan