event-driven-design

I'm looking for some guidance here. On my site I put things in Web user controls. For example, I will have a NewsItem Control, an Article Control, a ContactForm control. These will appear in various places on my site. What I'm looking for is a way for these controls to pass messages up to the Page that they exist on. I don't want to tightly couple them, so I think I will have to do this with Events/Delegates. I'm a little unclear as to how I would implement this, though. A couple of examples: 1 A contact form is submitted. After it's submitted, instead of replacing itself with a "Your mail has

Are there any Event Driven Architecture jQuery plugins? Step 1: Subscribing The subscribers subscribe to the event handler in the middle, and pass in a callback method, as well as the name of the event they are listening for... i.e. The two green subscribers will be listening for p0 events. And the blue subscriber will be listening for p1 events. Step 2: The p0 event is fired by another component to the Event Handler A p0 event is fired to the Event Handler The event handler notifies it's subscribers of the event, calling the callback methods they specified when they subscribed in Step 1:

I am learning Unity with C# and studying the GUI Button. I found the following statement in Unity documentation: "This means that your OnGUI implementation might be called several times per frame (one call per event). " using UnityEngine; using System.Collections; public class ExampleClass : MonoBehaviour { void OnGUI() { if (GUI.Button(new Rect(10, 10, 150, 100), "I am a button")) print("You clicked the button!"); } } My questions are: 1) The above "if" statement will keep detecting the condition until it is true. It should be called polling input. Why does the above code use polling input

In a redis datastore I have a list of keys, I want to iterate over that list of keys and get those values from redis. The catch is I am using an event driven language, javascript via node.js If javascript were procedural I could do this function getAll(callback) { var list = redis.lrange(lrange('mykey', 0, -1); for ( var i = 0; i < list.length; i+= 1 ) { list[i] = redis.hgetall(list[i]); } callback(list); } But, I cannot, therefor.. I do this? function getAll(callback) { redis.lrange('mykey', 0, -1, function(err, reply) { // convert reply into messages var list = []; var index = -1; var