Signals: Think Outside the Event.

Signals are light-weight, strongly-typed AS3 messaging tools.
Wire your application with better APIs and less boilerplate than AS3 Events.


* A Signal is essentially a mini-dispatcher specific to one event, with its own array of listeners. * A Signal gives an event a concrete membership in a class. * Listeners subscribe to real objects, not to string-based channels. * Event string constants are no longer needed. * Signals are inspired by C# events and signals/slots in Qt.


<pre><code>// with EventDispatcher
button.addEventListener(MouseEvent.CLICK, onClick);

// Signal equivalent; past tense is recommended

I am still looking for impressions, critiques and suggestions.
My email is robert at
I’m @robpenner on Twitter.

Background on AS3 Events

* My Critique of AS3 Events – Part 1 * AS3 Events – 7 things I’ve learned from community * My Critique of AS3 Events – Part 2