Is the other-kind-of-null really necessary in Nullable and Variant?

[Simen Kjaeraas]

On 2013-04-29, 17:34, Idan Arye wrote:

> On Monday, 29 April 2013 at 12:23:04 UTC, deadalnix wrote:
>> On Sunday, 28 April 2013 at 16:33:19 UTC, Idan Arye wrote:
>>> When you use `std.typecons.Nullable` with a type that already accept  
>>> `null` values, you get two types of nulls - the `Nullable`'s null  
>>> state the the regular type's `null`:
>>>
>>>    Nullable!string a;
>>>    writeln(a.isNull()); //prints "true"
>>>    a = null;
>>>    writeln(a.isNull()); //prints "false"
>>>    a.nullify();
>>>    writeln(a.isNull()); //prints "true"
>>>
>>
>> All types should be non nullable. Problem solved.
>
> *All* types? Even object references and pointers?

That would be nice, yes.

-- 
Simen