在Clojure中访问嵌套映射值的方法？

(def data {:person {:name "John" :age 30 :address {:city "New York" :zip 12345}}})

;; 使用关键字和get-in函数访问嵌套映射值
(let [name (get-in data [:person :name])
      city (get-in data [:person :address :city])]
  (println "Name:" name)
  (println "City:" city))

Name: John
City: New York