14.2.32 rest [Accessor]

rest list ⇒ tail

(setf ( rest list) new-tail)

Arguments and Values::

list—a list,

which might be a dotted list or a circular list.

tail—an object.

Description::

rest performs the same operation as cdr, but mnemonically complements first. Specifically,

 (rest list) ≡ (cdr list)
 (setf (rest list) new-tail) ≡ (setf (cdr list) new-tail)

Examples::

 (rest '(1 2)) ⇒  (2)
 (rest '(1 . 2)) ⇒  2
 (rest '(1)) ⇒  NIL
 (setq *cons* '(1 . 2)) ⇒  (1 . 2)
 (setf (rest *cons*) "two") ⇒  "two"
 *cons* ⇒  (1 . "two")

See Also::

cdr, nthcdr

Notes::

rest is often preferred stylistically over cdr when the argument is to being subjectively viewed as a list rather than as a cons.