[Haskell-cafe] Instances that shouldn't overlap

[Paul Johnson]

Paul Johnson wrote:
> Hi,
>
> I'm trying to set up some operators for applicative versions of 
> prelude types.  

I forgot to mention, I'm using {-# OPTIONS_GHC 
-fallow-undecidable-instances -XFlexibleInstances 
-XMultiParamTypeClasses #-}

Paul.