O(n)splitAtn t returns a pair whose first
element is a prefix of t of length n, and whose
second is the remainder of the string. It is equivalent to
(take n t, drop n t).
O(n)splitAtn t returns a pair whose first
element is a prefix of t of length n, and whose
second is the remainder of the string. It is equivalent to
(take n t, drop n t).