- split-at x iprocedure
- split-at! x iprocedure
split-at splits the list X at index I, returning a list of the first I elements, and the remaining tail. It is equivalent to
(values (take x i) (drop x i))
split-at! is the linear-update variant. It is allowed, but not required, to alter the argument list to produce the result.
(split-at '(a b c d e f g h) 3) => (a b c) (d e f g h)