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Written by Aaron Bell
on 

Working example of Clojure's new `iteration` function

My example:

(def example-data {:a {:next-token :b
                       :val  "A"}
                   :b {:next-token :c
                       :val  "B"}
                   :c {:next-token :d
                       :val "C"}
                   :d {:val "D"}}) ; No token, so `iteration` will end.

(vec (iteration
       (fn [token]
         (get example-data token))
       :initk :a
       :kf :next-token
       :vf :val))

I find this simpler and self-evident in how it’s used vs. the AWS example and the .readLine test example given so far. Even though there’s other examples in the tests for iteration, the .readLine example is the simplest.