On Thursday, 21 September 2023 02:10:22 PDT Ivan Solovev via Development wrote: > But I'd say that if someone wants to implement three-way comparison for > their classes in C++17, then a bit better understanding of the language > features is a reasonable expectation.
Allowing class developers to implement the three-way comparison such that Qt can make use of it is fine. That's basically allowing them to use the same technique we will be using to make our classes three-way comparable. Providing an API for three-way comparison in C++17 does not need to happen. People can upgrade to C++20 or complain to their vendors. We are talking about adding this to a Qt release to happen in 2024, nearly 4 years after the C++ edition was published. I won't oppose it if it is simple, without imposing undue constraints. But it need not be part of the initial design. -- Thiago Macieira - thiago.macieira (AT) intel.com Cloud Software Architect - Intel DCAI Cloud Engineering
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