Contents

(ns allergies)

(def ^:private allergens
  [:eggs :peanuts :shellfish :strawberries :tomatoes :chocolate :pollen :cats])

(defn- flagged?
  [flags index]
  (-> (bit-shift-right flags index)
      (bit-and 1)
      (pos?)))

(defn allergies
  "Given an 8-bit bitmap of flags, return the list of matching allergens."
  [flags]
  (keep-indexed (fn [index allergen]
                  (when (flagged? flags index)
                    allergen))
                allergens))

(defn allergic-to?
  "Given an 8-bit bitmap of flags and an allergen, return a boolean
  indicating whether or not the patient is allergic to the given allergen."
  [flags allergen]
  (some #{allergen} (allergies flags)))

Version data entries

396 entries across 396 versions & 1 rubygems

Version	Path
trackler-2.2.1.98	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.97	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.96	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.95	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.94	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.93	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.92	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.91	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.90	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.89	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.88	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.87	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.86	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.85	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.84	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.83	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.82	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.81	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.80	tracks/clojure/exercises/allergies/src/example.clj
trackler-2.2.1.79	tracks/clojure/exercises/allergies/src/example.clj