reset!

function

since v0.0-927

clojure.core/reset!

Edit

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Details:

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See Also:

• swap!
• compare-and-set!
• atom

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Source docstring:

Sets the value of atom to newval without regard for the
current value. Returns new-value.

(defn reset!
  [a new-value]
  (if (instance? Atom a)
    (let [validate (.-validator a)]
      (when-not (nil? validate)
        (when-not (validate new-value)
          (throw (js/Error. "Validator rejected reference state"))))
      (let [old-value (.-state a)]
        (set! (.-state a) new-value)
        (when-not (nil? (.-watches a))
          (-notify-watches a old-value new-value))
        new-value))
    (-reset! a new-value)))

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