descendants

function

since v0.0-927

clojure.core/descendants

Edit

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See Also:

• ancestors
• isa?
• make-hierarchy
• derive

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Source docstring:

Returns the immediate and indirect children of tag, through a
relationship established via derive. h must be a hierarchy obtained
from make-hierarchy, if not supplied defaults to the global
hierarchy. Note: does not work on JavaScript type inheritance
relationships.

(defn descendants
  ([tag] (descendants @(get-global-hierarchy) tag))
  ([h tag] (not-empty (get (:descendants h) tag))))

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