clojure.string/index-of

function

since v1.7.145

clojure.string/index-of

Edit

---

Source docstring:

Return index of value (string or char) in s, optionally searching
forward from from-index or nil if not found.

(defn index-of
  ([s value]
   (let [result (.indexOf s value)]
     (if (neg? result)
       nil
       result)))
  ([s value from-index]
   (let [result (.indexOf s value from-index)]
     (if (neg? result)
       nil
       result))))

---