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      keys

      clojure.core

      Available since 1.0 (source)
      • (keys map)
      Returns a sequence of the map's keys, in the same order as (seq map).
      © Rich Hickey. All rights reserved. Eclipse Public License 1.0
      2 Examples
      (keys {:keys :and, :some :values})
;;=> (:keys :some)

(keys {})
;;=> nil

(keys nil)
;;=> nil
      ;; 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)
      See Also
      clojure.core/vals

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

      Added by boxie
      clojure.core/hash-map

      keyval => key val Returns a new hash map with supplied mappings. If any keys are equal, they ar...

      Added by boxie
      clojure.core/key

      Returns the key of the map entry.

      Added by mmwaikar
      clojure.core/select-keys

      Returns a map containing only those entries in map whose key is in keys

      Added by timgilbert
      3 Notes
        By , created 11.4 years ago

        Functions keys and vals return sequences such that

        (= (zipmap (keys m) (vals m)) m)
        By , created 9.5 years ago, updated 9.5 years ago

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

        By , created 7.0 years ago

        Map with 8 or more keys order are unexpected.