Plan 9 from Bell Labs’s /usr/web/sources/contrib/fernan/nhc98/src/prelude/List/Group.hs
module List where import GroupBy -- group splits its list argument into a list of lists of equal, adjacent -- elements. e.g., -- group "Mississippi" == ["M","i","ss","i","ss","i","pp","i"] group :: (Eq a) => [a] -> [[a]] group = groupBy (==)