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Aaron Craelius 2014-11-16 15:38:42 -05:00
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@ -51,7 +51,7 @@ To try this quickly, you can install the [austin](https://github.com/cemerick/au
If you already understand [hiccup syntax](https://github.com/weavejester/hiccup#syntax) and Clojure's [`atom`](http://clojure.org/atoms), you're 90% of the way to understanding freactive.
**Reactive atoms:** In freactive, instead of Clojure's atom, you should use freactive's reactive `atom` which allows derefs to be captured by an enclosing reactive expression - an `rx` in this case. (This is exactly the same idea as in [reagent][reagent] and I believe originally came from [reflex][reflex]).
**Reactive atoms:** In freactive, instead of Clojure's atom, you use freactive's reactive `atom` which allows `deref`'s to be captured by an enclosing reactive expression - an `rx` in this case. (This is exactly the same idea as in [reagent][reagent] and I believe originally came from [reflex][reflex]).
**The `rx` macro**: the `rx` macro returns an `IDeref` instance (can be `deref`'ed with `@`) whose value is the body of the expression. This value gets updated when (and only when) one of the dependencies captured in its body (reactive `atom`s, other `rx`'s and also things like `cursor`'s) gets "invalidated". (Pains were taken to make this invalidation process as efficient and configurable as possible.)