append
, cons
, & list
2.26: Suppose we define x
and y
to be two lists:
(define x (list 1 2 3))
(define y (list 4 5 6))
What’s the output of the following?
(append x y)
;; (1 2 3 (4 5 6))
;; but actually
;; (1 2 3 4 5 6)
(cons x y)
;; ((1 2 3) (4 5 6))
;; but actually
;; ((1 2 3) 4 5 6)
(list x y)
;; (1 2 3 4 5 6)
;; but actually
;; ((1 2 3) (4 5 6))