[Development] C++20 comparisons @ Qt (was: Re: C++20 @ Qt)

[Edward Welbourne]

On Monday, 31 July 2023 02:36:41 PDT Ivan Solovev via Development wrote:
>> Basically, what you suggest is that for every pair of comparable Qt
>> types we would need to double the amount of work that we do - provide
>> not only the helper functions for the macros, but also the overload
>> for some public functions for the end-users.

Thiago Macieira (31 July 2023 17:23) replied:
> Every pair? Under what conditions do we need to implement
> heterogeneous comparisons, outside of the primitives? Even with the
> primitives, I don't see more than a handful of heterogeneous, between
> integers and floating point, plus a few other dispatchers to avoid
> ambiguous lookups for integer to integer.

There'd also be our plethora of string types - but still, indeed, only a
fairly limited set of cross-type comparisons.

	Eddy.