public override int GetHashCode()
{
if (_weakReference is object)
{
return(_hashCode);
}
return(ReferenceEqualityComparer.GetHashCode(_strongReference));
}
public static ReferenceHolder <T> Weak(T value)
{
if (value is null)
{
// Track this as a strong reference so we know 'Equals' should only look at values originally null.
return(Strong(value));
}
return(new ReferenceHolder <T>(new WeakReference <T>(value), ReferenceEqualityComparer.GetHashCode(value)));
}
int IEqualityComparer <object?> .GetHashCode(object?a)
{
return(ReferenceEqualityComparer.GetHashCode(a));
}