Hi,
I have this structure:
(def s [{"n" {"id" "a"} "d" 2 "children" [{"n" {"id" "c"} "d" 4 "children"
[]}]} {"n" {"id" "b"} "d" 3 "children" []}])
And I wrote a function with zippers to traverse it:
(defn traverse [col]
(loop [z col]
(if (= (z/next z) z)
z
(if (z/branch? z)
(recur (z/next z))
(recur (-> z println z/next))))))
But I'm getting: NullPointerException clojure.zip/next (zip.clj:236)
Any ideas?
Thanks for help.
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