to-array-2d(clojure.core)

Returns a (potentially-ragged) 2-dimensional array of Objects containing the contents of coll, which can be any Collection of any Collection.

; clojure/core.clj:2256
(defn to-array-2d
  [#^java.util.Collection coll]
    (let [ret (make-array (. Class (forName "[Ljava.lang.Object;")) (. coll (size)))]
      (loop [i 0 xs (seq coll)]
        (when xs
          (aset ret i (to-array (first xs)))
          (recur (inc i) (next xs))))
      ret))

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