hash-ordered-coll

function

since v0.0-2261

clojure.core/hash-ordered-coll

Edit

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Source docstring:

Returns the hash code, consistent with =, for an external ordered
collection implementing Iterable.
See http://clojure.org/data_structures#hash for full algorithms.

(defn ^number hash-ordered-coll
  [coll]
  (loop [n 0 hash-code 1 coll (seq coll)]
    (if-not (nil? coll)
      (recur (inc n) (bit-or (+ (imul 31 hash-code) (hash (first coll))) 0)
        (next coll))
      (mix-collection-hash hash-code n))))

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