Re: Historical question about type of Data.List.group

The current type is easier to use in general. And it was also what I needed back in the days when I added the function to the LML libraries. -- Lennart On Tue, Aug 26, 2008 at 8:45 PM, Jim Apple wrote:

Why isn't the type of group

Eq a => [a] -> [(a,[a])]

That matches more exactly what group does, and it's easy to see that functions like

nubOrd = map fst . group . sort

are clearly safe, whereas

map head . group . sort

is not.

Jim _______________________________________________ Libraries mailing list Libraries@haskell.org http://www.haskell.org/mailman/listinfo/libraries