clojure.core/parents

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Type: function Added: Clojure 1.0 Examples: 2 Runnable: 1

([tag] [h tag])

Returns the immediate 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

Examples

by shockbob on 2011-08-21 ▶

;; simple example showing single parented derivation ;; then adding another parent (derive ::toy_poodle ::poodle) nil (parents ::toy_poodle) #{:user/poodle} (derive ::toy_poodle ::toy_dogs) nil (parents ::toy_poodle) #{:user/poodle :user/toy_dogs}

by KingMob on 2023-03-12 . May have evaluation errors. ▶

;; This works on Java classes as well. Note that ;; it will only show direct parents, not the entire ;; ancestor hierarchy. (parents CompletableFuture) => #{java.util.concurrent.Future java.lang.Object java.util.concurrent.CompletionStage} (parents ConcurrentHashMap) => #{java.io.Serializable java.util.AbstractMap java.util.concurrent.ConcurrentMap}

See also

• clojure.core/descendants (1)
• clojure.core/ancestors (1)
• clojure.core/derive (3)
• clojure.core/underive
• clojure.core/make-hierarchy (0)
• clojure.core/isa? (2)

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