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Converting string to bool

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  • T toxcct

    what kind of strings are supposed to be stored in MyMap.find("Check")->second ? I mean, you'll have to test programmatically the string to assign another boolean variable to true or false...

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

    C Offline
    C Offline
    Cedric Moonen
    wrote on last edited by
    #6

    toxcct wrote:

    what kind of strings are supposed to be stored in MyMap.find("Check")->second ?

    From his snippet of code, I would say std::string.

    Cédric Moonen Software developer
    Charting control [v1.4]

    T 1 Reply Last reply
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    • C Cedric Moonen

      toxcct wrote:

      what kind of strings are supposed to be stored in MyMap.find("Check")->second ?

      From his snippet of code, I would say std::string.

      Cédric Moonen Software developer
      Charting control [v1.4]

      T Offline
      T Offline
      toxcct
      wrote on last edited by
      #7

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

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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

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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]

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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]

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            T Offline
            toxcct
            wrote on last edited by
            #10

            I prefer to be sure... :-D

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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?

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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.

                    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@-

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                        • S sudhir_Kumar

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

                          -@SuDhIrKuMaR@-

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                          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

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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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