In connection to a conversation on #clojure (in progress as I write)...
Apparently loop/recur locals are now primitive by default:
(defn fact [n]
(loop [n n r 1]
(if (zero? n)
r
;; note the regular * on the next line
(recur (dec n) (* r n)))))
will throw ArithmeticException because of integer overflow, because r
is a long. The solution provided by Rich is to "hint" r to be a boxed
number: (num r) => gives old behaviour. I'm vaguely in favour of
switching around to boxed-by-default locals, but that's just a very
early initial impression... Just wanted to point this out for the
consideration of others here.
Sincerely,
Michał
--
You received this message because you are subscribed to the Google
Groups "Clojure" group.
To post to this group, send email to [email protected]
Note that posts from new members are moderated - please be patient with your
first post.
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/clojure?hl=en
