clojure:使用多个键在映射中进行搜索

(def my-map {:a 1 :b 2 :c 3 :d 4})

(def keys-to-fetch [:a :c])

(def fetched-values (select-keys my-map keys-to-fetch))

;; 结果是 {:a 1, :c 3}

(def nested-map {:user {:name "John" :age 30} :location {:city "New York" :country "USA"}})

(def keys-path [:user :name])

(def value (get-in nested-map keys-path))

;; 结果是 "John"