rest (Accessor)

Syntax:

(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.