clojure.core/rand-nth

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Type: function Added: Clojure 1.2 Examples: 3 Runnable: 0

([coll])

Return a random element of the (sequential) collection. Will have the same performance characteristics as nth for the given collection.

Examples

by pkolloch on 2010-08-20 . May have evaluation errors. ▶

(def food [:ice-cream :steak :apple]) #'user/food (rand-nth food) :apple (rand-nth food) :ice-cream

by parkeristyping on 2017-10-11 . May have evaluation errors. ▶

(def food [:ice-cream :steak :apple]) #'user/food (rand-nth food) :ice-cream (rand-nth food) :ice-cream

by jnriver on 2018-05-25 . May have evaluation errors. ▶

(rand-nth []) IndexOutOfBoundsException clojure.lang.PersistentVector.arrayFor (PersistentVector.java:158) (let [xs []] (when (not (empty? xs)) (rand-nth xs))) nil

See also

• clojure.core/rand (2)
• clojure.core/shuffle
• clojure.core/nth (1)

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