获取关联数组中特定键的所有值

Question

让我说我有以下数组：

(defn component
  []
  (let [waiting? (r/atom false)
        selection-made? (r/atom false)
        selection-handler
        (fn []
          (println "selection-handler running")
          (when (seq (.. js/document getSelection toString))
            (reset! selection-made? true)))]
    (fn []
      [:div
        ; For debugging
        [:pre {} "waiting? " (str @waiting?)]
        [:pre {} "selection-made? " (str @selection-made?)]
        ; Your clickable element
        [:span
          {:on-click
           (fn [e]
            (println "click handler triggered")
            ; Remove the selection handler in any case because
            ; there is a small chance that the selection handler
            ; was triggered without selecting any text (by
            ; holding down the mouse on the text for a little
            ; while without moving it).
            (.removeEventListener js/document "selectionchange" selection-handler)
            (if @selection-made?
              ; If a selection was made, only perform cleanup.
              (reset! selection-made? false)
              ; If no selection was made, treat it as a
              ; simple click for now...
              (do
                (reset! waiting? true)
                ; Wait an appropriate amount of time for the
                ; double click to happen...
                (js/setTimeout
                  (fn []
                    ; If we are still waiting for the double click
                    ; to happen, it didn't happen! The mouse-down
                    ; handler would have set waiting? to false
                    ; by now if it had been clicked a second time.
                    ; (Remember that the mouse down handler runs
                    ; before the click handler since the click handler
                    ; runs only once the mouse is released.
                    (when @waiting?
                      (single-click-fn e)
                      (reset! waiting? false)))
                  500))))
           :on-mouse-down
           (fn [e]
            ; Set this for the click handler in case a double
            ; click is happening.
            (reset! waiting? false)
            ; Only run this if it is a left click, or the event
            ; listener is not removed until a single click on this
            ; segment is performed again, and will listen on
            ; every click everywhere in the window.
            (when (-> e .-button zero?)
              (js/console.log "mouse down handler running")
              (.addEventListener js/document "selectionchange" selection-handler)))
           :on-double-click #(double-click-fn %)}
          some content here]])))

是否有一个本机函数将数组和键作为输入，并返回给定键的所有值组成的数组？在上面的示例中，它将给出：

$v = Array
(
    [0] => Array
        (
            [a] => 1
            [b] => 2
        )
    [1] => Array
        (
            [a] => 11
            [b] => 22
        )
)

（我知道我可以编写自己的函数，我只是想知道是否存在本机函数）。