Download Advanced ActionScript 3: Design Patterns (2nd Edition) by Ben Smith PDF

By Ben Smith

Complex ActionScript three is a clean glance and new method of using beneficial, structural innovations and techniques which are general within the box of wealthy interactive software improvement. With each one procedure damaged down into various strategized motives, you'll locate the process most fitted for you. if it is an instance you could make the most of as-is, or one you can begin with and boost additional, you've gotten a thesaurus of definitions and organizational suggestions at your fingertips.

Object-oriented programming (OOP) and layout styles are usually not new to the sector, yet can frequently be missed of their price. they're, from time to time, not just overwhelming to profit, yet tough to place into perform. although, they're valuable simply because they carry a constitution that may be damaged down, rebuilt, and reused.

This variation has been totally up to date to mirror glossy coding criteria and practices.
* presents the construction blocks required for the implementation of OOP
* Addresses difficulties and matters concerning OOP
* deals options on the way to technique and make the most of OOP

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Extra info for Advanced ActionScript 3: Design Patterns (2nd Edition)

Sample text

Shape; public class Circle extends Shape { private var _color : uint; private var _radius : Number; private var _object : Object; public function Circle( radius : Number ) { _radius = radius; _object = new Object(); } 28 Chapter 2 ■ ActionScript 3: The Facts Behind the Basics public function get color() : uint { return color; } public function set color( color : uint ) : void { _color = color; } } } Before you instantiate the Circle class, let’s predict how much memory will be used by an instance of a Circle object.

Casting When you pass references among objects to that of a generalized type, you often have to cast an object back into its actual data type. There are two ways to cast an object in ActionScript 3: the cast operation, which wraps an expression such as Type( expression ), and the as operator ( expression as DataType ). Both approaches have distinct advantages over the other, such as readability, conversion precedence, performance, and casting failures. Typically, in ActionScript 3, you use the as operator to properly cast an object into another data type.

As indicated by the question marks in Figure 3-5, some paths require more clarification. What happens if a user decides to purchase a product? Are they redirected? Do you need to devise a new section? What if a user doesn’t have Flash—does the site have an HTML page? And what if the user clicks within the footer? Do they go to an external page, or do you display new content in the current page? The answers to these questions should be as generic as possible so they don’t interfere with your current process.

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