更新时间:2023-02-16 14:58:13
(defn dequeue!
[queue]
(loop []
(let [q @queue
value (peek q)
nq (pop q)]
(if (compare-and-set! queue q nq)
value
(recur)))))
(def queue (atom clojure.lang.PersistentQueue/EMPTY))
(swap! queue conj :foo)
(swap! queue conj :bar)
(seq @queue)
(dequeue! queue)
(seq @queue)