Design Patterns

Summary In this interview from QCon London 2008, Erich Gamma discusses the Jazz project, why Eclipse has been successful, the strict Eclipse release schedule, JUnit, Design Patterns, how to identify a design pattern, design patterns and the 'Don't Repeat Yourself' principle, the design pattern community, and whether dependency injection is a design pattern. Bio Erich Gamma is a Distinguished E

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I found this book to be a very good treatment of the GOF patterns. The content is well organized and has a very clean feel to it.

If you want to be even more effective in C++ read this book.

A new article is available in the Knowledge-Base: An Introduction to Design Patterns! This article explains the core concepts of Design Patterns - a once revolutionary (and now mainstream) code-design methodology. Like most code-design terms and concepts, Design Patterns are "meant for" object oriented languages, so the article "downgrades" the concept in order to fit it into a VBScript and QTP context. This article is the first in a series of Design Patterns articles, which will explore both how traditional Design Patterns manifest themselves in the world of QTP programming, as well as suggest new patterns that are unique to the context of functional automation. The concept of Design Patterns might be difficult to grasp at first, but I hope that once new articles and examples will be added things will get much clearer. Believe me, Design Patterns are worth you attention. So go right ahead and read the new article! Enjoy, Yaron.

There are three kinds of design patterns:Creational patterns:They are related with how objects and classes are created. While class-creation patterns use inheritance effectively in the instantiation process,while object-creation patterns use delegation to get the job done.     * Abstract Factory groups object factories that have a common theme.    * Builder constructs complex objects by separating construction and representation.     * Factory Method creates objects without specifying the exact object to create.    * Prototype creates objects by cloning an existing object.     * Singleton restricts object creation for a class to only one instance.Structural patterns:They are related to class and object composition.This pattern uses inheritance to define new interfaces in order to compose new objects and hence new functionalities.    * Adapter allows classes with incompatible interfaces to work to

Every now and then I overhear someone excitedly talking to someone else about Design Patterns. They're so excited about it, you can hear the capital D and capital P quite clearly. And they use that tone: you know, the one usually reserved for great sports achievements. And, invariably, I can't resist the temptation to get involved. Things usually go downhill from there.I can understand their chagrin. How would you like it if you just discovered something cool only to have some spoilsport tell you that roughly half of it is crap? Yet I just can't keep quiet; partly because I'm mean and love seeing their reactions, but mostly because I'm sick of the hype.Patternitis"The whole problem with the world is that fools and fanatics are always so certain of themselves, but wiser people so full of doubts."Bertrand RussellDon't get me wrong, I think design patterns are a great idea. Hardly a new one, but great nevertheless. The problem is that every Great Idea attracts its share of fanatics

Book Description There's a pattern here, and here's how to use it! Find out how the 23 leading design patterns can save you time and trouble Ever feel as if you've solved this programming problem before? You -- or someone -- probably did, and that's why there's a design pattern to help this time around. This book shows you how (and when) to use the famous patterns developed by the "Gang of