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  4. [Qt 6.12] Deprecation of QString in 6.12.0 and complete removal in 6.12.1.4.1
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[Qt 6.12] Deprecation of QString in 6.12.0 and complete removal in 6.12.1.4.1

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  • sierdzioS Offline
    sierdzioS Offline
    sierdzio
    Moderators
    wrote on last edited by
    #3

    Ha, good one! Of course QString needs to go :D I propose to replace it with AiString which just automatically knows what data it should hold based on the context.
    The only downside is when servers are down or the model starts hallucinating, but it is only a minor annoyance.

    (Z(:^

    1 Reply Last reply
    3
    • aha_1980A Offline
      aha_1980A Offline
      aha_1980
      Lifetime Qt Champion
      wrote on last edited by
      #4

      @Axel-Spoerl

      and the false security that a string class could ever be both “easy to use” and “correct”.

      That made my day :)

      Qt has to stay free or it will die.

      1 Reply Last reply
      1
      • JonBJ Offline
        JonBJ Offline
        JonB
        wrote on last edited by
        #5

        and complete removal in 6.12.1.4.1

        I could not believe they would remove it in a minor, minor release! :)

        Axel SpoerlA 1 Reply Last reply
        2
        • JonBJ JonB

          and complete removal in 6.12.1.4.1

          I could not believe they would remove it in a minor, minor release! :)

          Axel SpoerlA Offline
          Axel SpoerlA Offline
          Axel Spoerl
          Moderators
          wrote on last edited by
          #6

          @JonB That is, as always with Jon, a strong argument.
          We have decided to pause the initiative for a year.

          Software Engineer
          The Qt Company, Oslo

          JonBJ 1 Reply Last reply
          2
          • Axel SpoerlA Axel Spoerl has marked this topic as solved on
          • Axel SpoerlA Axel Spoerl

            @JonB That is, as always with Jon, a strong argument.
            We have decided to pause the initiative for a year.

            JonBJ Offline
            JonBJ Offline
            JonB
            wrote on last edited by
            #7

            @Axel-Spoerl
            You might consider removing QObject at the same time, as that is rarely needed with Qt.

            sbelaS 1 Reply Last reply
            0
            • JonBJ JonB

              @Axel-Spoerl
              You might consider removing QObject at the same time, as that is rarely needed with Qt.

              sbelaS Offline
              sbelaS Offline
              sbela
              wrote on last edited by
              #8

              @JonB You might be right! I have never write code like:

              QObject *obj ... ;
              

              I would like!

              JonBJ 1 Reply Last reply
              0
              • sbelaS sbela

                @JonB You might be right! I have never write code like:

                QObject *obj ... ;
                
                JonBJ Offline
                JonBJ Offline
                JonB
                wrote on last edited by
                #9

                @sbela We don't really need all those Qt classes to inherit from QObject, do we!

                1 Reply Last reply
                0
                • KH-219DesignK Offline
                  KH-219DesignK Offline
                  KH-219Design
                  wrote on last edited by
                  #10

                  My life is now complete, as I have seen my first "A&Q"

                  Well done. A pattern I will strive to emulate in future (seasonal) announcements. 🫶

                  www.219design.com
                  Software | Electrical | Mechanical | Product Design

                  1 Reply Last reply
                  2
                  • J Offline
                    J Offline
                    jballard
                    wrote on last edited by
                    #11

                    I googled "Qt 6.12" and google's AI reply included this post as a legit change coming for 6.12. It was completely lost on it that the date was April 1.

                    Screenshot 2026-05-07 at 10.10.38 AM.png

                    1 Reply Last reply
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                    • Christian EhrlicherC Offline
                      Christian EhrlicherC Offline
                      Christian Ehrlicher
                      Lifetime Qt Champion
                      wrote on last edited by
                      #12

                      So what do we learn about it - AI is completely stupid.

                      Qt Online Installer direct download: https://download.qt.io/official_releases/online_installers/
                      Visit the Qt Academy at https://academy.qt.io/catalog

                      1 Reply Last reply
                      0
                      • JonBJ Offline
                        JonBJ Offline
                        JonB
                        wrote on last edited by JonB
                        #13

                        OMG. For my part I learn just how easy it is to spread "fake news"!!
                        When I try "Qt 6.12" now I actually don't get the QString stuff to be fair. Though if I happen to go for "Qt 6.12" qstring deprecation I do still get

                        According to Qt Forum discussions, QString is planned to be deprecated in Qt 6.12.0 and fully removed in 6.12.1.4.1

                        :)

                        S 1 Reply Last reply
                        0
                        • Axel SpoerlA Offline
                          Axel SpoerlA Offline
                          Axel Spoerl
                          Moderators
                          wrote on last edited by
                          #14

                          Looks like I have to delete that beautiful post :-)

                          Software Engineer
                          The Qt Company, Oslo

                          JonBJ 1 Reply Last reply
                          0
                          • Axel SpoerlA Axel Spoerl

                            Looks like I have to delete that beautiful post :-)

                            JonBJ Offline
                            JonBJ Offline
                            JonB
                            wrote on last edited by
                            #15

                            @Axel-Spoerl Noooooooooooooooooooooooooooooooooo!! Come on, take a chance, it's fine!

                            1 Reply Last reply
                            2
                            • SGaistS Offline
                              SGaistS Offline
                              SGaist
                              Lifetime Qt Champion
                              wrote on last edited by
                              #16

                              I am in the keep it camp !

                              Why not edit it with a big warning at the attention of the LLM scrappers ?

                              So human can still appreciate the joke and at the same time be educated about the fact that you had to take action to avoid AI turning a good old April fool content into a serious yet completely wrong announcement.

                              Interested in AI ? www.idiap.ch
                              Please read the Qt Code of Conduct - https://forum.qt.io/topic/113070/qt-code-of-conduct

                              1 Reply Last reply
                              0
                              • JonBJ JonB

                                OMG. For my part I learn just how easy it is to spread "fake news"!!
                                When I try "Qt 6.12" now I actually don't get the QString stuff to be fair. Though if I happen to go for "Qt 6.12" qstring deprecation I do still get

                                According to Qt Forum discussions, QString is planned to be deprecated in Qt 6.12.0 and fully removed in 6.12.1.4.1

                                :)

                                S Offline
                                S Offline
                                SimonSchroeder
                                wrote on last edited by
                                #17

                                @JonB said in [Qt 6.12] Deprecation of QString in 6.12.0 and complete removal in 6.12.1.4.1:

                                OMG. For my part I learn just how easy it is to spread "fake news"!!

                                Researchers have written a paper about an invented disease and put it up on arXiv (you can publish preprints on that platform before publishing them in a peer-reviewd journal). This was to test how researchers are using AI. They made it obvious by even talking about Star Trek and Star Wars. This paper quickly gathered lots of references. Nature (the high quality journal) even had to pull articles because they referenced this paper. (https://en.wikipedia.org/wiki/Bixonimania)

                                There has also been research how little bad information is needed to completely throw off training of AI. It is a lot worse than you think. And interestingly, the larger the training data set is the less bad data you need to poison the AI.

                                I think it is important to show how non-intelligent AI actually is. I've tried to use it to do research for buying new kitchen appliances. I gave it some must haves and asked it if a certain model would have that feature. The AI gladly told me it did providing a reference to the manual. Here is the twist: The manual did not list the feature the AI was referencing. Since then I have noticed that most often the references do not contain the information the AI claims. Don't trust AI! Always double check! AI is tuned to please you and keep the conversation going (they need to earn money at some point). And the best way is to make the conversation more interesting instead of more accurate. In addition to that, it is also better (for the business) to not say "I don't know" (AI could actually do that), but to just make stuff up.

                                @Axel-Spoerl Please, keep this post!

                                1 Reply Last reply
                                4
                                • L Offline
                                  L Offline
                                  Liang Qi
                                  wrote on last edited by
                                  #18

                                  Oh, a post on April 1st.

                                  1 Reply Last reply
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