Dear Clojurians,
I'd like to propose a clojure.zip/goto function. It is basically
the inverse of the clojure.zip/path function, ie. it takes a
location and a path and walks through the zipper to the
given node and returns its loc.
(defn goto
"Follow along the path from the given loc. In case the path is not
contained in the zipper, an exception is thrown. The empty path is
always contained and leaves the loc as is."
[loc p]
(if-let p (seq p)
(cond
(= (node loc) (first p)) (recur (down loc) (rest p))
(right loc) (recur (right loc) p)
:else (throw (new Exception "path not in
tree")))
loc))
Sincerely
Meikel
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