Comment by macmac

Clojure has both recur and trampoline which handle tail calls (in general not just with loop) and trampoline for corecursion:

recur:

  (defn factorial
  ([n]
    (factorial n 1))
  ([n acc]
    (if  (= n 0)  acc
    (recur (dec n) (* acc n)))))

trampoline:

  (declare is-even?)

  (defn is-odd? [n]
    (if (zero? n)
      false
      #(is-even? (dec n))))

  (defn is-even? [n]
    (if (zero? n)
      true
      #(is-odd? (dec n))))

  (trampoline (is-odd? 10000))