I understand basically how IoC frameworks work, however one thing I don't quite get is how code-based config is supposed to work. With XML I understand how you could add a new assembly to a deployed application, then change the config in XML to include it. If the application is already deployed (i.e., compiled in some form) then how can code changes be made without recompiling? Or is that what people do, just change config in code and recompile?