The first pattern I want to talk about is the Strategy pattern , which always reminds me about the Command & Conquer games so I’ll simply use it as an example :) First of all, the definition: " Define a family of algorithms, encapsulate each one, and make them interchangeable. Strategy lets the algorithm...

Yesterday we saw the Strategy Pattern . Today I want to talk about the Observer Pattern . First, the definition again: " Define a one-to-many dependency between objects so that when one object changes state, all its dependents are notified and updated automatically. " Read more at http://blog.cumps.be...

Yesterday I described the Observer Pattern and mentioned that the .NET CLR provides this functionality through events and delegates . Let’s have a look on how to implement this right now. Read more at http://blog.cumps.be/design-patterns-observer-event-pattern/

Following up on the Observer/Event Pattern , it’s time for the third pattern, the Decorator Pattern . The definition: " Attach additional responsibilities to an object dynamically. Decorators provide a flexible alternative to subclassing for extending functionality. " Read more at http://blog.cumps.be...

I present you with the next pattern in our series , the Factory Method ! It took a while to get it out due to a stay in the hospital. (All is fine now :p) First of all, the definition: " Define an interface for creating an object, but let the subclasses decide which class to instantiate. The Factory...

Time to continue from yesterday's Factory Method Pattern by exploring the Abstract Factory Pattern . Anyway, time for the definition and then some code to make everything clear. " Provide an interface for creating families of related or dependent objects without specifying their concrete classes. " Read...

Today we'll have a look at a well known pattern, the Singleton Pattern . Most people have already heard about this one. The definition: " Ensure a class has only one instance and provide a global point of access to it. " Read more at http://blog.cumps.be/design-patterns-singleton-pattern/

A little follow up from yesterday's Singleton Pattern , where I asked for some help on how you would approach a generic singleton . With the help of Andrew Stevenson and ExNihilo , we came up with the following Generic Singleton Pattern : Read more at http://blog.cumps.be/design-patterns-generic-singleton...

What's a lonely geek to do late in the evening? Write about the Command Pattern of course... Let's start with the definition: " Encapsulate a request as an object, thereby letting you parameterize clients with different requests, queue or log requests, and support undo-able operations. " Read more at...

We've seen quite a few patterns so far, and I'm glad so many people like them. They turned out to be the most popular posts I've ever written when it comes to development. Thanks! :) A little overview for the late joiners: Long Absence - Design Patterns Design Patterns - Strategy Pattern Design Patterns...