The decorator pattern is a good way to add extensibility to an application, as it follows SOLID design principles. Learn how to use it by adding validation logic to a form. The decorator pattern is a ...

Being somewhat of a closet Luddite, I only recently purchased my first cell phone. My phone is faceplate-ready — in other words, I can snap on a stylish faceplate. As far as I can tell, faceplates are ...

A friend of mine — a medical doctor, no less — once told me that he convinced a friend to take a college exam for him. Someone who takes the place of someone else is known as a proxy. Unfortunately ...