qualified-symbol?

functionsince v1.9.75 clojure.core/qualified-symbol?Edit
(qualified-symbol? x)

Source docstring:
Return true if x is a symbol with a namespace
Source code @ clojurescript:src/main/cljs/cljs/core.cljs
(defn qualified-symbol?
  [x] (boolean (and (symbol? x) (namespace x) true)))