Reagent forcing a remount

reagent-remount-component.cljs

;; This snippet forces React to unmount and remount the
;; entire component tree. Note that this is not the same
;; as using r/force-update-all. r/force-update-all causes
;; all components to update while staying mounted; the technique
;; used here causes a complete did-unmount/did-mount cycle.

(defonce !refresh-count (r/atom 0))

(defn refresh []
  (swap! !refresh-count inc))

(defn root* []
  (r/create-class
   {:component-did-mount (fn []
                           (prn [:did-mount :root*]))
    :render (fn []
              [:div "hello"])}))

(defn root []
  [root* {:key @!refresh-count}])

This saved my life today! Thanks for sharing.