AdvancED ActionScript 3.0: Design Patterns

Defining an External Definition

Up to now, you've explored the principles of OOP and seen how the four principles of OOP work harmoniously to improve your code architecture. All that remains is to learn how to physically construct these objects in the AS 3.0 language.

Part of the burden of defining a custom object is that such an object isn't natively understood by the compiler. You must tell the compiler what the object does and also where to find it. Essentially, the compiler must be made aware of an external definition.

Any spoken language can have multiple definitions for a particular word, which may create confusion during a conversation. Similarly, computers require a way to tell which definition should be used; otherwise, unexpected errors ...