01_basics.clj

;; A simple starwars collection of characters

(def starwars-characters
  {:jedi   ["Luke Skywalker"
            "Rey"]
   :droids ["R2D2"
            "BB-8"]})

;; Get all the jedi characters
(get starwars-characters :jedi)

;; Get all the droid characters
(get starwars-characters :droids)


;; A nested collection - some values are also maps

(def starwars-collection
  {:characters {:jedi   ["Luke Skywalker"
                         "Rey"]
                :droids ["R2D2"
                         "BB-8"]}
   :ships {:rebels ["Millenium Falcon"]}})


;; Get all the characters who are jedi
(get-in starwars-collection [:characters :jedi])

;; Get all the ships used by the rebels
(get-in starwars-collection [:ships :rebels])


;; You could also use the get function twice for the last two exercises,
;; although its more common to use the get-in function

(get (get starwars-collection :characters) :jedi)

(get (get starwars-collection :ships) :rebels)