Note: I am using C# 8's Nullable Reference Types. Reference types are, by default NOT nullable.
Suppose I have the following method:
public void TestMethod<T>(T[] items)
{
}
Without using any generic constraints, how can I use the Nullable attributes to specify that the array itself will not be null, but an individual item in the array may be null?
My goal is the following:
- No warning, due to the array itself being not null:
var len = items.Length; - Warning, because an individual item can be null:
items[0].ToString() - No warning, because of the null coalescing operator:
items[0]?.ToString()
This code seems to indicate that the array itself can be null, but, if the array itself is not-null, then each array item is also not null:
public void TestMethod<T>([MaybeNull]T[] items)
{
}
I know that using generic constraints will solve this problem - because I could then use T?[] items - but, then I have to create two versions of the class - one for value types and one for reference types. Is there a way to indicate this without using generic constraints?