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Parse QDateTime from string

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  • C Offline
    C Offline
    Creatorczyk
    wrote on last edited by
    #1

    Hi,

    I would like to init object of class QDateTime with string like this

    QString line = "29/04/2021,13:42:12.051000";
    QDateTime dateTime = QDateTime::fromString(line, "dd/MM/yyyy,HH:mm:ss.zzzzz");
    qDebug()<<dateTime.toString();
    

    But in result i got empty string

    ""
    

    How could I parse string?

    J.HilkJ eyllanescE 2 Replies Last reply
    0
    • C Creatorczyk

      Hi,

      I would like to init object of class QDateTime with string like this

      QString line = "29/04/2021,13:42:12.051000";
      QDateTime dateTime = QDateTime::fromString(line, "dd/MM/yyyy,HH:mm:ss.zzzzz");
      qDebug()<<dateTime.toString();
      

      But in result i got empty string

      ""
      

      How could I parse string?

      J.HilkJ Offline
      J.HilkJ Offline
      J.Hilk
      Moderators
      wrote on last edited by
      #2

      @Creatorczyk
      I don't think you can with 5z's as your milliseconds
      Time only supports
      6b8cc151-0255-4db5-b22d-140f19b53776-image.png

      so you'll have to truncate the string


      Be aware of the Qt Code of Conduct, when posting : https://forum.qt.io/topic/113070/qt-code-of-conduct


      Q: What's that?
      A: It's blue light.
      Q: What does it do?
      A: It turns blue.

      1 Reply Last reply
      2
      • C Creatorczyk

        Hi,

        I would like to init object of class QDateTime with string like this

        QString line = "29/04/2021,13:42:12.051000";
        QDateTime dateTime = QDateTime::fromString(line, "dd/MM/yyyy,HH:mm:ss.zzzzz");
        qDebug()<<dateTime.toString();
        

        But in result i got empty string

        ""
        

        How could I parse string?

        eyllanescE Offline
        eyllanescE Offline
        eyllanesc
        wrote on last edited by
        #3

        @Creatorczyk the "z" is related to the number of milliseconds so "z", "zz" and "zzz" make sense but more not since for example "1" equals "100" milliseconds, "11" equals "110" milliseconds but "1111" exceeds millisecond.

        If you want me to help you develop some work then you can write to my email: e.yllanescucho@gmal.com.

        1 Reply Last reply
        2
        • S Offline
          S Offline
          SilentWolf
          wrote on last edited by
          #4

          @Creatorczyk said in Parse QDateTime from string:

          QString line = "29/04/2021,13:42:12.051000";
          QDateTime dateTime = QDateTime::fromString(line, "dd/MM/yyyy,HH:mm:ss.zzzzz");
          qDebug()<<dateTime.toString();

          you should shorten the text: 3 characters after "."
          QString line = "29/04/2021,13:42:12.051";
          QDateTime dateTime = QDateTime::fromString(line, "dd/MM/yyyy,HH:mm:ss.zzz");
          qDebug()<<dateTime.toString();

          1 Reply Last reply
          0

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