How do I check if a type is assignable to null at compile time?

[Jack]

On Friday, 26 February 2021 at 23:37:18 UTC, Murilo wrote:
> On Friday, 26 February 2021 at 05:25:14 UTC, Jack wrote:
>> I started with:
>>
>> enum isAssignableNull(T) = is(T : Object) || isPointer(T);
>>
>> but how do I cover all cases?
>
> You can check if it's null with this `variable is null` and you
> can test it with assert as in `assert(variable is null);`

I mean a give type T not variablee