store/[org.clojure/clojure "1.8.0"] clj::clojure.core/class?

Official Documentation

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Arities
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Docstring
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  Returns true if x is an instance of Class

Source

(defn class?
  "Returns true if x is an instance of Class"
  {:added "1.0"
   :static true}
  [x] (instance? Class x))

Example 1

Edit
(class? 1)
;; => false

(class? java.lang.String)
;; => true

(class? [])
;; => false

Uses on crossclj