Hi, I'm still not familiar with laziness and I'm trying to make a
function recursively walk arbitrary data structures to perform some
action on all strings. The non-lazy version is quite easy to do:

(use
  'clojure.walk
  'clojure.contrib.str-utils)

(defn recursive-string-walk [f form]
  (walk #(if (string? %) (f %) (recursive-string-walk f %))
    identity form))

But it blow up the stack quite rapidly, I've tried to inject some
laziness inside, but only came up with a slight improvement. It can
take forms that are a little more than two time as deep.

(defn recursive-string-walk [f form]
  (walk #(cond
           (string? %) (f %)
           (seq? %)    (lazy-seq (recursive-string-walk f %))
           :default    (recursive-string-walk f %))
    identity form))

Is there a way too make a fully lazy version of this function?

Thanks

- budu
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