replace

function

since v0.0-927

clojure.core/replace

Edit

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Details:

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See Also:

• map
• clojure.walk/prewalk-replace
• clojure.walk/postwalk-replace

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Source docstring:

Given a map of replacement pairs and a vector/collection, returns a
vector/seq with any elements = a key in smap replaced with the
corresponding val in smap.  Returns a transducer when no collection
is provided.

(defn replace
  ([smap]
     (map #(if-let [e (find smap %)] (val e) %)))
  ([smap coll]
     (if (vector? coll)
       (let [n (count coll)]
         (reduce (fn [v i]
                   (if-let [e (find smap (nth v i))]
                     (assoc v i (second e))
                     v))
           coll (take n (iterate inc 0))))
       (map #(if-let [e (find smap %)] (second e) %) coll))))

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