If you already have existing ActionScript experience, this book will help you fill in gaps in your knowledge, rethink important concepts in formal terms, and understand difficult subjects through plain, careful language. Consider this book an ActionScript expert that sits with you at your desk. You might ask it to explain the subtleties of ActionScript's event architecture, or unravel the intricacies of Flash Player's security system, or demonstrate the power of ActionScript's native XML support (E4X). Or you might turn to this book for information on under-documented topics, such as namespaces, embedded fonts, loaded-content access, class-library distribution, garbage collection, and screen updates.
This book is a true developer's handbook, packed with practical explanations, insightful warnings, and useful example code that demonstrates how to get the job done right.