Re: [Haskell-cafe] groupBy without Ord?

On Sun, Mar 23, 2014 at 1:29 AM, martin wrote:

So I often wonder, where you would use Haskell's groupBy WITHOUT sorting first, but I assume there are situations, where this is useful.

But if you sorted first, then there must be an Ord-er on the elements, yes? In which case you could then apply (sqlGroup = group . sort) as originally desired. I'm sure groupBy is useful standalone (dim memories of some functional pearl) but your hunch is right in that I normally use it after a sorting step. -- Kim-Ee