test.cljs

(defonce state (atom {:items [{:name "apple" :tasty true}
                              {:name "shoe"  :tasty false}
                              {:name "glue"  :tasty true}]}))

(defn toggle-tasty [name]
  ;... swap! :items 
  )

(defn item [i]
  [:div [:span (:name i)]
        [:input {:type "checkbox" :checked (:tasty i) :on-change (fn [x] (toggle-tasty (:name i)))}]

(defn items [its]
  [:div
    (for [i its]
         [item i])])


(reagent/render-component [items (:items @state)]
                          (. js/document (getElementById "app")))