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

By Ben Smith

Complex ActionScript three is a clean glance and new method of using worthy, structural strategies and strategies which are popular within the box of wealthy interactive software improvement. With each one procedure damaged down into diversified strategized factors, you'll locate the strategy most fitted for you. if it is an instance you could make the most of as-is, or one you can begin with and improve extra, you may have a word list of definitions and organizational ideas at your fingertips.

Object-oriented programming (OOP) and layout styles are usually not new to the sector, yet can usually be missed of their price. they're, every now and then, not just overwhelming to profit, yet tricky to place into perform. besides the fact that, they're invaluable simply because they bring a constitution that may be damaged down, rebuilt, and reused.

This version has been totally up-to-date to mirror smooth coding criteria and practices.
* offers the development blocks required for the implementation of OOP
* Addresses difficulties and issues relating to OOP
* bargains suggestions on tips on how to method and make the most of OOP

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Due to the many bug fixes implemented from one player to the next the memory consumption varies. 102 build. Let’s look at another example. This time, we’ll use MovieClip as the superclass. MovieClip; public class MovieClipExtension extends MovieClip { public function MovieClipExtension() { } } } If you estimate the file size, you assume it’s that of an instantiated MovieClip, or 428 bytes. But here’s the call to getSize(): trace( getSize( new MovieClipExtension ( ) ) ); // 412 bytes 29 Chapter 2 ■ ActionScript 3: The Facts Behind the Basics The application states that MovieClipExtension consumes 412 bytes of memory resources, which is not what you expected.

OOP, in short, helps you build quality objects that in turn enable flexibility, modularity, and easier maintenance. Often, developers jump right in and implement objects at the beginning of a new project. Doing so molds rigidity into the system’s foundation. This “shoot first, ask questions later” mentality is understandable when time is working against you, but it will come back to haunt you. The next time you’re driving over a bridge or leaning over the balcony of a 10-story building, consider the possible result if a civil engineer had jumped right into the construction phase of the project.

Figure 2-5. Instantiation and memory location referenced via secondaryObj; Design patterns, whether creational, behavioral, or structural, pass references for delegation and modification. Some examples are the Observer pattern (discussed in Chapter 7) and the Command pattern (also discussed in Chapter 7), just to name two. The relationships among objects may prevent memory from being released, so you need to ensure this release when you no longer require the objects’ services. Implementing a Disposable Pattern Hooray, your first pattern!

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