FizzBuzz in Clojure, composed step-by-step.

fizzbuzz.clj

(def fizzbuzz-nums (range 1 101))

(defn fizz?     [n] (zero? (rem n 3)))
(defn buzz?     [n] (zero? (rem n 5)))
(defn fizzbuzz? [n] (and (fizz? n) (buzz? n)))

(defn fizzbuzz [n]
  (cond (fizzbuzz? n) "FizzBuzz"
        (fizz? n) "Fizz"
        (buzz? n) "Buzz"
        :else  n ))

(def fizzbuzz-list (map fizzbuzz fizzbuzz-nums))

(apply println fizzbuzz-list)