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Split a String at prompt "."

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  • M meikelneit

    I just hitted my dot button :P, how do i know if its a char or a string? Shall i use the Hexcode of the Ascii?

    ps: yes ";" is no Problem. Try it with "."

    CP71C Offline
    CP71C Offline
    CP71
    wrote on last edited by
    #7

    @meikelneit
    I hope I understand your problem, my English isn't good :(
    Anyway, It works well with "."

    0_1550142606010_ca78cde0-2fb8-4702-bbea-c462873db468-image.png

    1 Reply Last reply
    1
    • M meikelneit

      I just hitted my dot button :P, how do i know if its a char or a string? Shall i use the Hexcode of the Ascii?

      ps: yes ";" is no Problem. Try it with "."

      J.HilkJ Offline
      J.HilkJ Offline
      J.Hilk
      Moderators
      wrote on last edited by
      #8

      @meikelneit said in Split a String at prompt ".":

      how do i know if its a char or a string?

      "." -> implicit QString
      '.' -> implicit QChar

      QString(".");
      QChar('.');

      ' more than 1 character' -> Compiler error.


      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.

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      4
      • CP71C CP71

        @Ratzz
        Hi,
        this works well in my code:

        QStringList data = info.split(";");

        RatzzR Offline
        RatzzR Offline
        Ratzz
        wrote on last edited by
        #9

        @CP71 said in Split a String at prompt ".":

        this works well in my code:

        Are you trying to split an ; ?

        --Alles ist gut.

        CP71C 1 Reply Last reply
        0
        • M meikelneit

          I just hitted my dot button :P, how do i know if its a char or a string? Shall i use the Hexcode of the Ascii?

          ps: yes ";" is no Problem. Try it with "."

          RatzzR Offline
          RatzzR Offline
          Ratzz
          wrote on last edited by
          #10

          @meikelneit said in Split a String at prompt ".":

          Try it with "."

          Split works both with string and char as split has overloads with string and char .

          --Alles ist gut.

          1 Reply Last reply
          1
          • M Offline
            M Offline
            meikelneit
            wrote on last edited by
            #11

            I just can tell u what happens when i try to split with ".".

            the line i tryed to split is: Array[0..3] of Int;

            when i use "." is QRegularexpression to split with, i get 21 List Elements and every single one is empty.
            it wokrs without error, but pls have a look into your listelements, mine were empty, and i had 21 of them, i expected 3.

            jsulmJ VRoninV 2 Replies Last reply
            0
            • M meikelneit

              I just can tell u what happens when i try to split with ".".

              the line i tryed to split is: Array[0..3] of Int;

              when i use "." is QRegularexpression to split with, i get 21 List Elements and every single one is empty.
              it wokrs without error, but pls have a look into your listelements, mine were empty, and i had 21 of them, i expected 3.

              jsulmJ Offline
              jsulmJ Offline
              jsulm
              Lifetime Qt Champion
              wrote on last edited by
              #12

              @meikelneit Can you show your code including the exact string you're trying to split?

              https://forum.qt.io/topic/113070/qt-code-of-conduct

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              1
              • M meikelneit

                I just can tell u what happens when i try to split with ".".

                the line i tryed to split is: Array[0..3] of Int;

                when i use "." is QRegularexpression to split with, i get 21 List Elements and every single one is empty.
                it wokrs without error, but pls have a look into your listelements, mine were empty, and i had 21 of them, i expected 3.

                VRoninV Offline
                VRoninV Offline
                VRonin
                wrote on last edited by VRonin
                #13

                @meikelneit said in Split a String at prompt ".":

                mine were empty, and i had 21 of them, i expected 3.

                The second argument to split takes care of this: https://doc.qt.io/qt-5/qstring.html#split-3

                "La mort n'est rien, mais vivre vaincu et sans gloire, c'est mourir tous les jours"
                ~Napoleon Bonaparte

                On a crusade to banish setIndexWidget() from the holy land of Qt

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                3
                • RatzzR Ratzz

                  @CP71 said in Split a String at prompt ".":

                  this works well in my code:

                  Are you trying to split an ; ?

                  CP71C Offline
                  CP71C Offline
                  CP71
                  wrote on last edited by
                  #14

                  @Ratzz

                  Split function works well in both cases:

                  • QStringList list = text.slit(".");
                  • QStringList list = text.split(";");

                  If it is what you want to know, be patient if I didn't well understand

                  Also I tried:

                  • QStringList list = text.slit(‘.’);
                  • QStringList list = text.split(‘;’);

                  Also in this cases split works well.

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                  3
                  • SGaistS Offline
                    SGaistS Offline
                    SGaist
                    Lifetime Qt Champion
                    wrote on last edited by
                    #15

                    Hi

                    @meikelneit said in Split a String at prompt ".":

                    (QRegularExpression(".")

                    The dot in regular expressions means any character. As you discovered, if you want to express a literal dot you have to escape it.

                    You can test your expressions with the QRegularExpression example tool.

                    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
                    6
                    • M Offline
                      M Offline
                      meikelneit
                      wrote on last edited by
                      #16

                      Thank you very mutch, that explains why i have 21 empty listelements. It just splits between every single character. :) ok thx

                      1 Reply Last reply
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