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Improve comment in todomvc

This commit is contained in:
Mike Thompson 2016-03-14 21:00:00 +11:00
parent 4b3e59950f
commit 47959188a0
1 changed files with 4 additions and 2 deletions
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6
examples/todomvc/src/todomvc/handlers.cljs
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@ -16,8 +16,10 @@
(if-let [problems (s/check a-schema db)]
(throw (js/Error. (str "schema check failed: " problems)))))
;; after an event handler has run, this middleware can check that
;; it the value in app-db still correctly matches the schema.
;; Event handlers change state, that's their job. But what heppens if there's
;; a bug and they corrupt this state in some subtle way? This middleware is run after
;; each event handler has finished, and it checks app-db against a schema. This
;; helpd us detect event handler bugs very early.
(def check-schema-mw (after (partial check-and-throw schema)))