instance?

function/macro

since v0.0-927

clojure.core/instance?

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Details:

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See Also:

• type

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Source docstring:

Evaluates x and tests if it is an instance of the type
c. Returns true or false

(defn ^boolean instance?
  [c x]
  (cljs.core/instance? c x))

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(core/defmacro instance? [c x]
  ;; Google Closure warns about some references to RegExp, so
  ;; (instance? RegExp ...) needs to be inlined, but the expansion
  ;; should preserve the order of argument evaluation.
  (bool-expr (if (clojure.core/symbol? c)
               (core/list 'js* "(~{} instanceof ~{})" x c)
               `(let [c# ~c x# ~x]
                  (~'js* "(~{} instanceof ~{})" x# c#)))))

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