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You can persist application data using NSUserDefaults in your iPhone application? What are we referring to when we mention “persistence”? Basically, we mean that we’re going to allow your app to save data locally onto your iPhone and then later recall that saved data when your application requests that data.
Here’s the pertinent [...]
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You can extract the alpha, red, blue, and green channels of a hexadecimal color with simple bit shift and logical AND operations? Below are the operations to extract these channels from RGB and ARGB color formats.
RGB Channel Extraction - 24 bits
// 24 bit color
var color : uint = 0xff0000;
var R : Number = [...]
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In one line of code in conjunction with the Math.random() method, you can generate a ranged random number as illustrated below:
Math.random() * ( max - min ) + min;
This will generate a random float between the values “min” and “max”
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You can achieve binding programmatically with the “ChangeWatcher”? The following example illustrates various methods for achieving binding.
The first method simply binds the labels text property to the text property of the text input. This is probably the most straightforward method for achieving binding.
The second method binds via the ChangeWatcher. Using the [...]
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Event listeners and Dictionary’s support weak referencing facilities in Actionscript 3.0? Why the need for weak referencing?
potential performance gains
promote best practices in application cleanup strategies ( i.e. prevent memory leaks )
Utilizing weak references does not necessarily mean that your application will be free from memory leaks. You, as the developer, are still [...]
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You can dynamically change a display elements style and attributes by utilizing custom style tags in conjunction with the setStyle/GetStyle methods of the component to which the style is applied to? Let’s walk through a simple example to illustrate.
A simple gradient border skin as illustrated below.
package com.thekeunster.skins
{
import flash.display.Graphics;
[...]
What’s a QueueTip? Are we referring to those small devices described by a paper stick and a cotton swab on each end? Nope. Perhaps the lightest barbell you’ve ever lifted? Nope. On this site, we’ll be referring to the QueueTip as a “Quick Tip”. Generally, these quick tips will be just that, quick. Nothing in [...]