I have an example to clarify what I understood of your idea: (declare odd)
(defn even [x] (if (zero? x) [true] (lazy-seq nil (odd (dec x))))) (defn odd [ x] (if (zero? x) [false] (lazy-seq nil (even (dec x))))) (defn get-value [l] (if (nil? (first l)) (recur (next l)) (first l))) (get-value (even 15000000)) Nicolas. -- You received this message because you are subscribed to the Google Groups "Clojure" group. To post to this group, send email to clojure@googlegroups.com Note that posts from new members are moderated - please be patient with your first post. To unsubscribe from this group, send email to clojure+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/clojure?hl=en