! impure
| convention | since v0.0-927 |  in clojure | Edit |
A naming convention sometimes applied to functions that perform mutations. Examples:
Details:
In Clojure, it is used only for things not safe in an STM transaction (source), which does not apply to ClojureScript because its compilation target, JavaScript, is single-threaded.
Examples:
The following causes a side-effect in the state of a:
(def a (atom 1))
@a
;;=> 1
(reset! a 2)
@a
;;=> 2