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  4. Converting string to bool

Converting string to bool

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  • P pl_kode

    Thanks for the reply. This can be done. But instead I am looking for some function that does this like atoi() or itoa() for string to int and vice versa. Is there any function for strings to bool.

    T Offline
    T Offline
    toxcct
    wrote on last edited by
    #8

    please reply to this question[^] first before we can reply to you efficiently

    [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

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    • T toxcct

      you misunderstood me. I meant what is contained within that string ? 1/0 ? true/false ? checked/unchecked ? white/black ?

      [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

      C Offline
      C Offline
      Cedric Moonen
      wrote on last edited by
      #9

      true/false :) (well, that what he said in his post)

      Cédric Moonen Software developer
      Charting control [v1.4]

      T 1 Reply Last reply
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      • C Cedric Moonen

        true/false :) (well, that what he said in his post)

        Cédric Moonen Software developer
        Charting control [v1.4]

        T Offline
        T Offline
        toxcct
        wrote on last edited by
        #10

        I prefer to be sure... :-D

        [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

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        • CPalliniC CPallini

          what about

          bool f = temp == "true";

          :)

          If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
          This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

          J Offline
          J Offline
          Jijo Raj
          wrote on last edited by
          #11

          You still remember it. :laugh: Regards, Jijo.

          _____________________________________________________ http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

          CPalliniC 1 Reply Last reply
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          • P pl_kode

            Thanks for the reply. This can be done. But instead I am looking for some function that does this like atoi() or itoa() for string to int and vice versa. Is there any function for strings to bool.

            C Offline
            C Offline
            Cedric Moonen
            wrote on last edited by
            #12

            pl_kode wrote:

            But instead I am looking for some function that does this like atoi() or itoa() for string to int and vice versa

            Why ? That's quite simple, why do you want to use an existing function for that ?

            pl_kode wrote:

            Is there any function for strings to bool.

            Not as far as I know.

            Cédric Moonen Software developer
            Charting control [v1.4]

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            • J Jijo Raj

              You still remember it. :laugh: Regards, Jijo.

              _____________________________________________________ http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

              CPalliniC Offline
              CPalliniC Offline
              CPallini
              wrote on last edited by
              #13

              Well I forgot for a while, but then suddenly I spotted you vulture ;P ready for hitting me! :-D

              If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
              This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

              In testa che avete, signor di Ceprano?

              J 1 Reply Last reply
              0
              • P pl_kode

                Thanks for the reply. This can be done. But instead I am looking for some function that does this like atoi() or itoa() for string to int and vice versa. Is there any function for strings to bool.

                CPalliniC Offline
                CPalliniC Offline
                CPallini
                wrote on last edited by
                #14

                Good news: it exists, is atob. The bad news is that you have to code it (anyway you got so many hints about). :-D

                If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

                In testa che avete, signor di Ceprano?

                1 Reply Last reply
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                • T toxcct

                  you misunderstood me. I meant what is contained within that string ? 1/0 ? true/false ? checked/unchecked ? white/black ?

                  [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

                  P Offline
                  P Offline
                  pl_kode
                  wrote on last edited by
                  #15

                  true/ false is stored in that

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                  • P pl_kode

                    I am getting a string from map that can be either true or false. Is there any function or some alternative to convert this string into bool. So that I can store it in a bool variable.

                    string temp;
                    temp=MyMap.find("Check")->second; // give either true or false

                    I want to convert temp to bool. THANKS.

                    S Offline
                    S Offline
                    sudhir_Kumar
                    wrote on last edited by
                    #16

                    bool bVal = (temp == "true"?true:false);

                    -@SuDhIrKuMaR@-

                    T 1 Reply Last reply
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                    • S sudhir_Kumar

                      bool bVal = (temp == "true"?true:false);

                      -@SuDhIrKuMaR@-

                      T Offline
                      T Offline
                      toxcct
                      wrote on last edited by
                      #17

                      why do you need the ?: operator ? the std::string::operator==() already returns a bool. in the same direction, why wouldn't you write this then :

                      bool bVal = ((temp == "true") == true ? true : false)

                      or

                      bool bVal = (((temp == "true") == true) == true ? true : false)

                      or just

                      bool bVal = (temp == "true")

                      ;P

                      [VisualCalc][Binary Guide][CommDialogs] | [Forums Guidelines]

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                      • CPalliniC CPallini

                        Well I forgot for a while, but then suddenly I spotted you vulture ;P ready for hitting me! :-D

                        If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
                        This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke

                        J Offline
                        J Offline
                        Jijo Raj
                        wrote on last edited by
                        #18

                        hehehhehe!!! :laugh:

                        _____________________________________________________ http://weseetips.com[^] Visual C++ tips and tricks. Updated daily.

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