Clojure - Maps rename-keys

Renames keys in the current HashMap to the newly defined ones.

Syntax

Following is the syntax.

(rename-keys hmap keys)

Parameters − ‘hmap’ is the map of hash keys and values. ‘keys’ is the new list of keys which need to be replaced in the map.

Return Value − Returns a map with a new list of keys.

Example

Following is an example of rename-keys in Clojure.

(ns clojure.examples.example
   (:require [clojure.set :as set])
   (:gen-class))
(defn example []
   (def demokeys (hash-map "z" 1 "b" 2 "a" 3))
   (def demonew (set/rename-keys demokeys {"z" "newz" "b" "newb" "a" "newa"}))
   (println demonew))
(example)

Output

The above code produces the following output.

{newa 3, newb 2, newz 1}