Most common examples of misuse of singleton class

Question

When should you NOT use a singleton class although it might be very tempting to do so? It would be very nice if we had a list of most common instances of \'singletonitis\' t

Answer 1

Singletons are virtually always a bad idea and generally useless/redundant since they are just a very limited simplification of a decent pattern.

Look up how Dependency Injection works. It solves the same problems, but in a much more useful way--in fact, you find it applies to many more parts of your design.

Although you can find DI libraries out there, you can also roll a basic one yourself, it's pretty easy.