update-vals

function

since v1.11.50

Edit

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Source docstring:

m f => {k (f v) ...}
Given a map m and a function f of 1-argument, returns a new map where the keys of m
are mapped to result of applying f to the corresponding values of m.

(defn update-vals
  {:added "1.11"}
  [m f]
  (with-meta
    (persistent!
      (reduce-kv (fn [acc k v] (assoc! acc k (f v)))
                 (if (implements? IEditableCollection m)
                   (transient m)
                   (transient {}))
                 m))
    (meta m)))

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