Why it's not possible to chain ref returns if the inner method also accepts out params in C#7?

Question

I was experimenting with the new C#7 features and I found something strange. Given the following simplified scenario:

public struct Command
{
}

public class Co         


        

Answer 1

you can't call ref return method that has ref or out param

this change can be fix it

public ref Command CreateCommandWithIndex(out int index)
        {
            ref Command cmd = ref cb.GetNextCommand(out index);
            return ref cmd;
        }

then when you call this method call it by value