diff options
Diffstat (limited to 'common-lisp.html.markdown')
| -rw-r--r-- | common-lisp.html.markdown | 13 |
1 files changed, 8 insertions, 5 deletions
diff --git a/common-lisp.html.markdown b/common-lisp.html.markdown index c4ecb5e8..63183c1e 100644 --- a/common-lisp.html.markdown +++ b/common-lisp.html.markdown @@ -175,7 +175,8 @@ nil ; for false - and the empty list :age 5)) *rover* ; => #S(DOG :NAME "rover" :BREED "collie" :AGE 5) -(dog-p *rover*) ; => t ;; ewww) +(dog-p *rover*) ; => true #| -p signifies "predicate". It's used to + check if *rover* is an instance of dog. |# (dog-name *rover*) ; => "rover" ;; Dog-p, make-dog, and dog-name are all created by defstruct! @@ -260,7 +261,7 @@ nil ; for false - and the empty list (defparameter *adjvec* (make-array '(3) :initial-contents '(1 2 3) :adjustable t :fill-pointer t)) - + *adjvec* ; => #(1 2 3) ;; Adding new element: @@ -573,13 +574,15 @@ nil ; for false - and the empty list "While `condition` is true, `body` is executed. `condition` is tested prior to each execution of `body`" - (let ((block-name (gensym))) + (let ((block-name (gensym)) (done (gensym))) `(tagbody + ,block-name (unless ,condition - (go ,block-name)) + (go ,done)) (progn ,@body) - ,block-name))) + (go ,block-name) + ,done))) ;; Let's look at the high-level version of this: |