Nullable create via reflection with HasValue = false, given a parameter of type `Type` only

Question

Given a type parameter which is a Nullable<>, how can I create an instance of that type which has HasValue = false?

In other words, compl

Answer 1

Highly dangerous (and not recommended for non-testing purposes) is to use SharpUtils' method UnsafeTools.Box(T? nullable). It bypasses the normal boxing of nullable types, which boxes their value or returns null, and instead creates an actual instance of Nullable. Note that working with such an instance can be extremely buggy.

public static object Create() where T : struct //T must be a normal struct, not nullable
{
    return UnsafeTools.Box(default(T?));
}