clojure.set/rename-keys

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Type: function Added: Clojure 1.0 Examples: 5 Runnable: 0

([map kmap])

Returns the map with the keys in kmap renamed to the vals in kmap

Examples

by Brian Marick on 2010-07-11 . May have evaluation errors. ▶

(rename-keys {:a 1, :b 2} {:a :new-a, :b :new-b}) {:new-a 1, :new-b 2} ;; The behavior when the second map contains a key not in the first is interesting. ;; I suspect you shouldn't depend on it. (Clojure 1.1 - no longer happens in 1.2.1) (rename-keys {:a 1} {:b :new-b}) { :a 1, :new-b nil}

by steveminer on 2011-05-13 . May have evaluation errors. ▶

;; You need to be careful about key collisions. You probably shouldn't ;; depend on the exact behavior. (rename-keys {:a 1 :b 2} {:a :b}) {:b 1}

by mrkam2 on 2019-01-30 . May have evaluation errors. ▶

;; Key collisions no longer reproducible in Clojure 1.10.0 (rename-keys {:a 1 :b 2} {:a :b :b :a}) {:b 1, :a 2}

by Jeel-Shah on 2020-01-30 . May have evaluation errors. ▶

;; Note that rename-keys in the clojure.set namespace. In order to use it, you ;; must require the namespace (require '[clojure.set :as set]) (set/rename-keys {:a 1 :b 2} {:a :new-a}) => {:new-a 1 :b 2} ;; Alternatively, you can use rename-keys by simply doing clojure.set/rename-keys

by shegeley on 2021-05-18 . May have evaluation errors. ▶

doesn't works on nested (as one might expect) (rename-keys {:user {:name "john"}} {:user {:name :nickname}}) => {{:name :nickname} {:name "john"}}

See also

• clojure.set/rename

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