I want create seq which keep indexes of non-zero elements of
collection.
Code:

(defn nonzero-inx [s]
  (filter (fn [x] (not (nil? x))) (map (fn [a b] (if (not (== a 0))
b)) s (range (count s)))))

look complicated than solution in most imperative languages.
May be possible simplest way in Clojure?





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