vswap!

macro

since v0.0-2496

clojure.core/vswap!

(vswap! vol f & args)

See Also:

Source docstring:

Non-atomically swaps the value of the volatile as if:
(apply f current-value-of-vol args). Returns the value that
was swapped in.

Source code @ clojurescript:src/main/clojure/cljs/core.cljc

(core/defmacro vswap!
  [vol f & args]
  `(-vreset! ~vol (~f (-deref ~vol) ~@args)))