identical?

(identical? x y)

clojure.core/identical?: true when x and y are the same object. Two keywords of one spelling are one object, like the oracle's interned keywords. Numbers, characters and symbols compare by value here, so (identical? 1000 1000) and (identical? 'a 'a) are true (the oracle: false). A Java object is identical only to itself, like the oracle's, even when its equals says otherwise (= asks equals). As a value a two-argument function.