clojure.core/enumeration-seq

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Type: function Added: Clojure 1.0 Examples: 2 Runnable: 0

([e])

Returns a seq on a java.util.Enumeration

Examples

by leifp on 2012-07-17 . May have evaluation errors. ▶

(enumeration-seq (java.util.StringTokenizer. "exciting example")) ("exciting" "example")

by reborg on 2018-02-28 . May have evaluation errors. ▶

;; A parallel distinct, using ConcurrentHashMap as a ;; set of keys to get rid of duplicates. ;; Keys at the end can be retrieved as an enumeration, ;; and from that as a sequence, thanks to enumeration-seq (import '[java.util.concurrent ConcurrentHashMap]) (require '[clojure.core.reducers :refer [fold]]) (defn parallel-distinct [v] (let [m (ConcurrentHashMap.) combinef (fn ([] m) ([_ _])) reducef (fn [^ConcurrentHashMap m k] (.put m k 1) m)] (fold combinef reducef v) (enumeration-seq (.keys m)))) (defn many-repeating-numbers [n] (into [] (take n (apply concat (repeat (range 10)))))) (parallel-distinct (many-repeating-numbers 1e6)) ;; (0 1 2 3 4 5 6 7 8 9)

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