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  1. Qt
  2. QTBUG-132840

As a user of Qt, I'd like to have an overview over which classes already support C++20 op<=>

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Details

    • User Story
    • Resolution: Unresolved
    • P2: Important
    • None
    • 6.8.1, 6.9.0 Beta1
    • None

    Description

      Each individual class that supports the spaceship operator in C++20 builds should already mention this in the docs (needs confirmation).

      The reverse is not true: we don't have a list of Qt types that support the spaceship operator. Esp. in Qt 6.8 and 6.9, where not all classes have been ported, yet, such a list would be good starting point for users that wish to learn about C+20 support, and could be linked from the C+20 overview page, too (cf. QTBUG-128837).

      Acceptance criteria:

      • add a new \group, say three_way_comparables
      • add each \class that has a spaceship operator in C++20 builds to that group
      • display the group in a suitable location
        • link that location from the C++20 overview page (cf. QTBUG-128837)

      The "suitable location" is probably not the C++20 overview page itself, because that list will become long, so it should probably be a separate page, akin to https://doc.qt.io/qt-6/datastreamformat.html

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            cnn Qt Core & Network
            mmutz Marc Mutz
            Vladimir Minenko Vladimir Minenko
            Alex Blasche Alex Blasche
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