disj!

functionsince v0.0-1211 clojure.core/disj!Edit
(disj! tcoll val)
(disj! tcoll val & vals)

Source docstring:
disj[oin]. Returns a transient set of the same (hashed/sorted) type, that
does not contain key(s).
Source code @ clojurescript:src/main/cljs/cljs/core.cljs
(defn disj!
  ([tcoll val]
    (-disjoin! tcoll val))
  ([tcoll val & vals]
    (let [ntcoll (-disjoin! tcoll val)]
      (if vals
        (recur ntcoll (first vals) (next vals))
        ntcoll))))