first

Type:	-	function (subr)
Source:	-	xlinit.c

Syntax

(first expr)

expr - a list or list expression
returns - the first element of the expression

Description

The 'first' function 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

(first '(a b c))               ; returns A
(first '((a b) c d))           ; returns (A B)
(first NIL)                    ; returns NIL
(first 'a)                     ; error: bad argument type
(setq children '(amanda ben))  ; set up variable CHILDREN
(first children)               ; returns AMANDA

See the first function in the XLISP 2.0 manual.

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