ancestors(clojure.core)

Returns the immediate and indirect parents of tag, either via a Java type inheritance relationship or a relationship established via derive. h must be a hierarchy obtained from make-hierarchy, if not supplied defaults to the global hierarchy

; clojure/core.clj:3311
(defn ancestors
  ([tag] (ancestors global-hierarchy tag))
  ([h tag] (not-empty
            (let [ta (get (:ancestors h) tag)]
              (if (class? tag)
                (let [superclasses (set (supers tag))]
                  (reduce into superclasses
                    (cons ta
                          (map #(get (:ancestors h) %) superclasses))))
                ta)))))

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