drop package:containers is:exact

Drop a given number of entries in key order, beginning with the smallest keys.
drop n = fromDistinctAscList . drop n . toAscList
Elements of a sequence after the first i. If i is negative, drop i s yields the whole sequence. If the sequence contains fewer than i elements, the empty sequence is returned.
Drop a given number of elements in order, beginning with the smallest ones.
drop n = fromDistinctAscList . drop n . toAscList