streams
12345678910111213
(defn forever [value]
(list value (fn [] (forever value))))
(defn stream-map [f stream]
(list (f (first stream)) (fn [] (stream-map f ((last stream))))))
(defn stream-take [n stream]
(if (= n 0)
'()
(cons (first stream) (stream-take (dec n) ((last stream))))))
(println (stream-take 10 (stream-map inc (forever 42))))
Clojure
INFO