It seems that you should be able to do this by defining new methods for the
operations you need to support. For addition, you could do
```
+{S,T}(x::Nullable{S}, y::Nullable{T}) = isnull(x) || isnull(y) ?
Nullable{promote_type(S,T)}() : x.value + y.value
+{S,T}(x::Nullable{S}, y::T) = +(x, Nullable(y))
+{S,T}(x::T, y::Nullable{S}) = +(y, x)
```
For other operations, you would do similar things.
// T
On Tuesday, October 6, 2015 at 4:33:05 AM UTC+2, [email protected] wrote:
>
> I'd like to be able to do for example:
>
> Nullable(3.) + 6 = Nullable(9.)
>
> as well as
>
> Nullable(3.) + Nullable(6) = Nullable(9)
>
> All types interacting with Nullables -> Nullable
>
>
