I have a list of objects implementing an interface, and a list of that interface: public interface IAM { int ID { get; set; } void Save(); } public class concreteIAM : IAM { public int ID { ge...

*EDIT: To answer my own question, I had to add EditorViewModel as an import to the parent abstract class in the outer layout, and cast the viewModel to the parent class using app:viewModel="@{((Edi...

I have the following class, which uses constructor injection: public class Service : IService { public Service(IRepository repository, IProvider provider) { ... } } For most methods in this cla...

I'm learning iOS development right now and I came across concrete and abstract class. What are the difference between these class. I've searched online but they're in other languages not in Objecti...

In general scenario, the interface or abstract class is often the appropriate decision, am I right? But in some cases, it looks like the concrete class is better. For instance, public string Repl...