Why is a Nullable not a valid Custom Attribute Parameter when T is?

Question

If I have an enum like this

public enum Hungry
{
    Somewhat,
    Very,
    CouldEatMySocks
}

and a custom attribute like this

<         


        

Answer 1

Hungry? is equal to Nullable, which in terms mean that

[Hunger(NullableHungerLevel = Hungry.CouldEatMySocks)]

is equal to

[Hunger(NullableHungerLevel = new Nullable(Hungry.CouldEatMySocks))]

Since you can only use constant values in named attribute arguments you will have to resort to Shimmy's solution.