Re: Proposal: Adding on

On Thu, 02 Nov 2006, Duncan Coutts wrote:

I wonder about how this relates to 'comparing' which we already have in Data.Ord. Does adding 'on' mean we should remove 'comparing' ?

I would suggest we keep both and add 'equating' to Data.Eq too, for symmetry with 'comparing'.

I think it's just as easy to understand (compare `on` f) as (comparing f), so having both just adds extra complexity. Hence I place comparing _under_ the Fairbairn threshold. My patch adds documentation to Data.List pointing to on, by the way. -- /NAD