car

car

type: function (subr) 
location: built-in
source file: xllist.c
Common LISP compatible: yes
supported on: all machines

SYNTAX

(car <expr> )
        <expr>          -       a list or list expression

DESCRIPTION

CAR returns the first element of the expression. If the first expression is itself a list, then the sublist is returned. If the list is NIL, NIL is returned.

EXAMPLES

(car '(a b c))                          ; returns A
(car '((a b) c d))                      ; returns (A B)
(car NIL)                               ; returns NIL
(car 'a)                                ; error: bad argument type
(setq bob '(1 2 3))                     ; set up variable BOB
(car bob)                               ; returns 1