Clojurians Log v2

Hey, any idea why this doesn't work? Clicking on the button doesn't update the component

(defn root-component []
  (let [selected (r/atom 0)]
    (fn []
      [:p [:button {:on-click #(reset! selected 1)} "Click me"]
       (map
         (fn [x] (str (= x @selected)))
         [0 1 2])])))

(defn root-component []
  (let [selected (r/atom 0)]
    (fn []
      [:p [:button {:on-click #(reset! selected 1)} "Click me"]
       (str (map
              (fn [x] (= x @selected))
              [0 1 2]))])))

@jazzytomato you’re dereferencing the selected atom inside of a lazy sequence, so reagent isn’t able to capture the dereference and set up its tracking magic for you

if you lift the dereference out of the map you should see it work:

New
jazzytomato  11:44 AM

Hey, any idea why this doesn't work? Clicking on the button doesn't update the component

(defn root-component []
  (let [selected (r/atom 0)]
    (fn []
      [:p [:button {:on-click #(reset! selected 1)} "Click me"]
       (let [selected-val @selected]
         (map
           (fn [x] (str (= x selected-val)))
           [0 1 2])]))))

Oooooh of course :face_palm:

Thanks 😁