daveyarwood

; ex. 1:
(repeat 5 "Odelay!")  

; ex. 2:
(when-not (re-find #"aura" "restaurant") (System/exit 0))

; ex. 3:
(map clojure.string/capitalize ["toast" "cheese" "wine"])

; ex. 4:

daveyarwood

; ex. 1:
(def blue-crystal 1)
(def leaf-tender 5)

; ex. 2:
(catch-a-star pipe)

; ex. 3:
(def captive-star (catch-a-star pipe))

daveyarwood

; ex. 1:
(defn dr-chams-timeline [year]
  (cond
    (= year 1894) 
    "Born."
    (<= 1895 year 1913)
    "Childhood in Louisville, Winston Co., Mississippi."
    (<= 1914 year 1919)
    "Worked at a pecan nursery; punched a Quaker."
    (<= 1920 year 1928)

daveyarwood

; exs. 32-34:
; not applicable to Clojure (Ruby class inheritance)
; although this is somewhat similar to implementing protocols in records

; ex. 35:
(defn mail-them-a-kit [address]
  (when-not (instance? address ex.Address)
    (throw (IllegalArgumentException. "No Address object found.")))
  (print (formatted address)))

daveyarwood

(fn best-hand [card-strings]
  (let [card-parser (fn [[s r]]
                      (let [suit ({\S :spade, \H :heart, 
                                   \D :diamond, \C :club} s)
                            rank (if (> (Character/digit r 10) -1)
                                   (- (Character/digit r 10) 2)
                                   ({\T 8, \J 9, 
                                     \Q 10, \K 11, \A 12} r))]
                        {:suit suit, :rank rank}))
        cards (map card-parser card-strings)

daveyarwood

(fn best-hand [card-strings]
  (let [card-parser (fn [[s r]]
                      (let [suit ({\S :spade, \H :heart, 
                                   \D :diamond, \C :club} s)
                            rank (if (> (Character/digit r 10) -1)
                                   (- (Character/digit r 10) 2)
                                   ({\T 8, \J 9, 
                                     \Q 10, \K 11, \A 12} r))]
                        {:suit suit, :rank rank}))
        cards (map card-parser card-strings)

daveyarwood

for x in range(1,101):
    if x % 15 == 0:
        print "FizzBuzz"
    elif x % 3 == 0:
        print "Fizz"
    elif x % 5 == 0:
        print "Buzz"
    else:
        print x

daveyarwood

(defn fizz-buzz [n]
  (cond
    (zero? (rem n 15)) "FizzBuzz"
    (zero? (rem n 3))  "Fizz"
    (zero? (rem n 5))  "Buzz"
    :else               n))

(doseq [x (map fizz-buzz (range 1 101))]
  (println x))

daveyarwood

(def fizz-buzz
  (->> (map vector (range 1 101) (repeat 100 ""))
        (map (fn [[i s]] [i (if (zero? (rem i 3)) (str s "Fizz") s)]))
        (map (fn [[i s]] [i (if (zero? (rem i 5)) (str s "Buzz") s)]))
        (map (fn [[i s]] (if (= "" s) i s)))))

(doseq [x fizz-buzz] (println x))

daveyarwood

(defn fizz-buzz [n]
  (let [s (str (when (zero? (rem n 3)) "Fizz")
               (when (zero? (rem n 5)) "Buzz"))]
    (if (empty? s) n s)))

(doseq [x (map fizz-buzz (range 1 101))]
  (println x))