Oh, of course, cluttering the code with explicit conversion from one data-structure into another is a much better way, much more lines of code, bigger self-esteem, better salary. Java world.

There is an example (very clever, no doubts)

  (defn keywordize-map
    "Recursively convert maps in m (including itself)
     to have keyword keys instead of string"
    [x]
    (condp instance? x
     clojure.lang.IPersistentMap
     (for-map [[k v] x]
       (if (string? k) (keyword k) k) (keywordize-map v))
     clojure.lang.IPersistentList
     (map keywordize-map x)
     clojure.lang.IPersistentVector
     (into [] (map keywordize-map x))
     x))

btw, this code is really clever, while in typical clojure project there are tons of meaningless conversions.