Olivier Langlois's blog

10 years ago this book revolutionize the way programmers see object oriented programming. At that time, it was essential to read it. In fact, I remember that employers were testing candidate knowledge on design patterns at job interviews. Today, I consider this book as a classic that I would recommand to read for everyone that has just learned object oriented programming but it is less essential than it used to be as design patterns knowledge has spread in the litterature and you could even learn about them just by working on existing code. That being said, this book is still very valuable even for people that already know about patterns. I am on my second reading after many years of using the design patterns and I am picking up new insights that has escaped my attention at the first reading.