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newfoundresearch/gist:1525702

Created December 28, 2011 01:21
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gistfile1.clj
(defn t2 [ks]
(persistent!
(reduce
(fn [m k]
(assoc! m k (* k 2)))
(transient {})
ks)))
(def m (t2 (range 1 1e6)))
OutOfMemoryError Java heap space clojure.lang.PersistentHashMap$BitmapIndexedNode.assoc (PersistentHashMap.java:678)
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