Speed up apropos+.

clj/hello-clojure.clj

  ([string]
   (apropos+ string 'clojure.core))
  ([string namespace]
   (let [symbols (keys (ns-publics namespace))
         docs (map #(-> `#'~% eval meta :doc) symbols)]
   (let [symbols (vals (ns-publics namespace))
         docs (map #(-> % meta :doc) symbols)]
     (filter #(and (not= nil %) (.contains % string)) docs))))
(apropos+ "containing" 'clojure.core)