clojure.walk/keywordize-keys

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Type: function Added: Clojure 1.1 Examples: 4 Runnable: 3

([m])

Recursively transforms all map keys from strings to keywords.

Examples

by sunil.nandihalli on 2010-10-14 ▶

(require 'clojure.walk) (clojure.walk/keywordize-keys {"a" 1 "b" 2}) ;;=> {:a 1 :b 2}

by eunmin on 2016-10-20 ▶

(use 'clojure.walk) (keywordize-keys {"a" 1, "b" {"c" {"d" 2}}}) ;;=> {:a 1, :b {:c {:d 2}}}

by Luke1298 on 2021-01-15 ▶

;; The input object also doesn't have to be a dictionary (require 'clojure.walk) (clojure.walk/keywordize-keys [{"hello" "goodbye"}]) ;;=>[{:hello "goodbye"}]

by burinc on 2023-09-08 . May have evaluation errors. ▶

;; Convert java.util.Map to Clojure map (import '[java.util Map HashMap]) (require '[clojure.walk :as w]) (defn javamap->map [^java.util.Map m] (->> (seq m) (into {}) w/keywordize-keys)) (let [m (doto (java.util.HashMap.) (.put 1 "one") (.put 2 "two") (.put 3 "three"))] (javamap->map m)) ;;=> {1 "one", 2 "two", 3 "three"}

See also

• clojure.core/keyword (7)
• clojure.walk/stringify-keys (3)

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