;; timer.clj

(defn print-without-newline [string]
  (print string)
  (flush))

(defn timer-for [minutes]
  (let [seconds (* minutes 60)]
    (doseq [n (reverse (range seconds))]
      (Thread/sleep 1000)
      (print-without-newline (str "\r" (quot n 60) " m " (mod n 60) " s ")))))

(timer-for 1.1)