clojure.core/keys

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

([map])

Returns a sequence of the map's keys, in the same order as (seq map).

Examples

by pkolloch on 2010-07-30 ▶

(keys {:keys :and, :some :values}) ;;=> (:keys :some) (keys {}) ;;=> nil (keys nil) ;;=> nil

by gzmask on 2016-10-24 ▶

;; although doc says it only takes a map, this still works: (keys (filter (fn [[_ v]] (-> v :t)) {:a {:t true} :b {:t false} :c {:t true}})) ;;=> (:a :c)

Note by akhudek

Functions keys and vals return sequences such that

(= (zipmap (keys m) (vals m)) m)

Note by Jarzka

I noticed that the keys are not always returned in the same order. Usually they are, but not always.

Note by ac1dr3d

Map with 8 or more keys order are unexpected.

See also

• clojure.core/vals (1)
• clojure.core/hash-map (3)
• clojure.core/key (1)
• clojure.core/select-keys (5)

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