Comments on: Be Mindful of Clojure’s binding

By: Lars Rune Nøstdal

Lars Rune Nøstdal — Sun, 11 Dec 2011 21:25:29 +0000

I just tried this in 1.4-SNAPSHOT and I get 15:

user> (def ^:dynamic *foo* 5)
#’user/*foo*

user> (defn adder [param]
(+ *foo* param))
#’user/adder

user> (binding [*foo* 10]
(doseq [v (pmap adder (repeat 3 5))]
(println v)))
15
15
15
nil
user>

I’m not sure when this changed, of if something else is going on here.

Chas Emerick — Tue, 20 Apr 2010 13:10:46 +0000

Oh, I know, that probably should’ve had a ;-) instead of a :-)

kotarak — Tue, 20 Apr 2010 13:10:30 +0000

Seeing it as a “race” of sort would be a bad thing. I just noticed, that both posts were very close together in terms of date. :)

Chas Emerick — Tue, 20 Apr 2010 13:10:09 +0000

I’m glad it’s not a race either way. :-)

Nice writeup, tho – I neglected to mention with-bindings in mine.

kotarak — Tue, 20 Apr 2010 13:09:13 +0000