Loggers are one of most popular examples about interfaces for sure. And there are a lot of implementations of loggers. Some implementations are simple and yet powerful, some implementations may be more complex. All we have to is to select implementation...
I just putted up Unity behind my test project and had some troubles with singletons. There is some misleading information in documentation you should be aware of. I created one class and one interface, both in same project to save some time. namespace...