added error types and stuff

2018-09-19 01:50:33 +09:00
parent 9d0427f790
commit 4c33538e8a
8 changed files with 157 additions and 108 deletions
@@ -14,9 +14,18 @@

 ** DONE if
   CLOSED: [2018-09-18 Di 12:14]
-** TODO and
+** TODO and (short circuiting)
 ** TODO or
 ** TODO not
+#+begin_src emacs-lisp
+(not 1)                  ;; == (not . (1 . nil))
+(not (expression 1 3))   ;; == (not . ((expression . (1 . (3 . nil))) . nil))
+(not)                    ;; == (not . nil)
+(not 1 2)                ;; == (not . (1 . (2 . nil)))
+#+end_src
+
+#+RESULTS:
+: t

 ** TODO first  (car)
 ** TODO rest   (cdr)