The closer the book to the language you'd like to apply to the better it is. Nothing beats applying it in real-life regardless whether it's a classic or not. C

The closer the book to the language you'd like to apply to the better it is. Nothing beats applying it in real-life regardless whether it's a classic or not. Case and point: Singleton design pattern in Java (and JVM) vs Singleton design pattern in C++. Try implementing it in a production environment and make sure it is thread-safe, network-safe (can be sent through the wire), etc. You'll end up with different approaches.