File: not

package info (click to toggle)
scheme9 2025.08.12-2
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 4,080 kB
  • sloc: lisp: 16,752; ansic: 11,869; sh: 806; makefile: 237; sed: 6
file content (11 lines) | stat: -rw-r--r-- 268 bytes parent folder | download | duplicates (7) 
1
2
3
4
5
6
7
8
9
10
11
 
R4RS 6.1  (not object)  ==>  boolean

NOT returns #T if OBJECT is false, and returns #F otherwise.

(not #t)        ==>  #f
(not 3)         ==>  #f
(not (list 3))  ==>  #f
(not #f)        ==>  #t
(not '())       ==>  #f
(not (list))    ==>  #f
(not 'nil)      ==>  #f