A good list, which can be extended. Just recently, for example, I came across the unpleasant fact that interfaces in C# cannot be nested (in fact, a C# interfac

A good list, which can be extended. Just recently, for example, I came across the unpleasant fact that interfaces in C# cannot be nested (in fact, a C# interface is not allowed to define any nested types). Inconvenient, breaks encapsulation, and does not seem to have a good technical reason for it. And yet, working with C# is joyful.