Clojure swap function

swap.clj

(ns jpenzes.swap (:require [clojure.test :refer :all]))

(defn swap [v i1 i2]
  (let [t (get v i1)]
    (assoc (assoc v i1 (get v i2)) i2 t)))

(deftest swap-test
  (testing "Should swap two items by index in a vector"
    (let [test-vector [1 2 3 4 5 6 7 8 9]
          expected [1 8 3 4 5 6 7 2 9]]
      (is (= expected (swap test-vector 1 7))))))

(run-tests)

 (defn swap [v i1 i2] 
    (asso­c v i2 (v i1) i1 (v i2)))­

Dik, lepsi!