clojure.core/counted?

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Type: function Added: Clojure 1.0 Examples: 2 Runnable: 1

([coll])

Returns true if coll implements count in constant time

Examples

by dakrone on 2010-10-08 . May have evaluation errors. ▶

(counted? [:a :b :c]) true (counted? '(:a :b :c)) true (counted? {:a 1 :b 2 :c 3}) true (counted? #{:a :b :c}) true (counted? "asdf") false (counted? (into-array Integer/TYPE [1 2 3])) false

by miner on 2016-06-30 ▶

;; Lazy sequences are not counted? (counted? (map inc (range 5))) ;;=> false

See also

• clojure.core/bounded-count (1)

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