The SOLID principles is a set of principles for object-oriented programming and design identified by Robert C. Martin. The five principles are:
This is what happens when you blog in the middle of a weekend during which you work 12hrs/day.
Today I attended an excellent workshop about Scala development held by Ted Neward. During the session Ted demonstrated a different, functional, aspect of the Inversion of Control concept which he illustrated in Scala. Since it’s fully possible to do the same thing in C# I thought would borrow and modify his example to show a different type of Inversion of Control.
The Open/Closed principle says that we should strive to write code that doesn’t have to be changed every time the requirements change. Here's a simple example.
An introduction to Inversion of Control, using the Dependency Injection and Service Locator patterns, along with simple examples in C#.
Out of the five SOLID principles the Open/Closed Principle is probably the one that I’ve had the hardest time understanding. However, a while ago though I found some code that I had written years ago that made me think to myself “Hey, this is clearly violating the Open Closed Principle!”.
