take

takes the first elements of a sequence

Return a lazy sequence of either count or fewer elements from the beginning of the provided sequence. If the source sequence is shorter than the requested count, the resulting sequence will be truncated.

An Example

(define x '(1 2 3 4))
(define y [5 6 7 8])
(take 6 (concat x y))

This example will return the lazy sequence (1 2 3 4 5 6).