[Interest] QVariant compare operator

[Nyall Dawson]

On Sun, 19 Apr 2020 at 10:48, Thiago Macieira <thiago.macieira at intel.com> wrote:
>
> On Saturday, 18 April 2020 12:57:55 -03 Giuseppe D'Angelo via Interest wrote:
> > I guess that's the reason for dropping the comparisons in 6.0 and,
> > eventually, reintroduce it in 7.0. With the hope that we've learned the
> > lesson and proceed at _specifying_ the behaviour before implementing it.
>
> Indeed, and implement the QVariant comparator on top of each underlying type's
> spaceship operator. That way, we could order elements of the same type. For
> mismatched types, QVariant can return std::partial_ordering::unordered.
>
> We can't do that right now because we can't rely on C++20. In fact, no current
> compiler supports the spaceship operator. So that has to be Qt 7.
>
> For now, the feature is badly implemented and yet too many people are using
> it. We can't simply remove it without giving fair warning. The warning is
> given.

Just to clarify -- are you saying it's been deprecated IN qt 6, or
removed in qt 6?

Nyall