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  4. smart way to detect if System.Boolean true or false

smart way to detect if System.Boolean true or false

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csharp
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  • L Luc Pattyn

    Contains!=Equals :~

    Luc Pattyn [Forum Guidelines] [My Articles] Nil Volentibus Arduum

    Please use <PRE> tags for code snippets, they preserve indentation, improve readability, and make me actually look at the code.

    A Offline
    A Offline
    AspDotNetDev
    wrote on last edited by
    #8

    Surely you mean: !Equals.Contains(Contains)

    [WikiLeaks Cablegate Cables]

    1 Reply Last reply
    0
    • V Vladimir Svyatski

      I've just found an "excellent" way to detect if boolean value is true or not in C#. Just great! Important, "value" variable is System.Boolean.

                  string valueStr = value.ToString();
                  if (valueStr.Equals("true", StringComparison.CurrentCultureIgnoreCase))
                  {
                      PDFIncludeWatermark\_ = "true";
                  }
                  else
                  {
                      PDFIncludeWatermark\_ = "false";
                  }
      
      OriginalGriffO Offline
      OriginalGriffO Offline
      OriginalGriff
      wrote on last edited by
      #9

      I'm not sure I trust computers that much. Can I suggest an improvement?

                  string valueStr = value.ToString();
                  if (valueStr.Equals("true", StringComparison.CurrentCultureIgnoreCase))
                  {
                      PDFIncludeWatermark\_ = "true";
                  }
                  else if (valueStr.Equals("false", StringComparison.CurrentCultureIgnoreCase))
                  {
                      PDFIncludeWatermark\_ = "false";
                  }
                  else
                  {
                      PDFIncludeWatermark\_ = "maybe";
                  }
      

      Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

      "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
      "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

      V T 2 Replies Last reply
      0
      • OriginalGriffO OriginalGriff

        I'm not sure I trust computers that much. Can I suggest an improvement?

                    string valueStr = value.ToString();
                    if (valueStr.Equals("true", StringComparison.CurrentCultureIgnoreCase))
                    {
                        PDFIncludeWatermark\_ = "true";
                    }
                    else if (valueStr.Equals("false", StringComparison.CurrentCultureIgnoreCase))
                    {
                        PDFIncludeWatermark\_ = "false";
                    }
                    else
                    {
                        PDFIncludeWatermark\_ = "maybe";
                    }
        

        Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

        V Offline
        V Offline
        Vladimir Svyatski
        wrote on last edited by
        #10

        You're right, never, never rely on compiler. Damn machines :) If you need a job done, do it yourself.

        OriginalGriffO 1 Reply Last reply
        0
        • V Vladimir Svyatski

          You're right, never, never rely on compiler. Damn machines :) If you need a job done, do it yourself.

          OriginalGriffO Offline
          OriginalGriffO Offline
          OriginalGriff
          wrote on last edited by
          #11

          Oh, I trust the compiler. It's reality I don't trust.:~

          Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

          "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
          "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

          1 Reply Last reply
          0
          • V Vladimir Svyatski

            I've just found an "excellent" way to detect if boolean value is true or not in C#. Just great! Important, "value" variable is System.Boolean.

                        string valueStr = value.ToString();
                        if (valueStr.Equals("true", StringComparison.CurrentCultureIgnoreCase))
                        {
                            PDFIncludeWatermark\_ = "true";
                        }
                        else
                        {
                            PDFIncludeWatermark\_ = "false";
                        }
            
            B Offline
            B Offline
            Bernhard Hiller
            wrote on last edited by
            #12

            Happy debugging! Internationalization will make you happy. I experienced that a long time ago. See also my message in the Hall of Shame: http://www.codeproject.com/feature/HallOfSHame.aspx?msg=3432553#xx3432553xx[^]

            1 Reply Last reply
            0
            • OriginalGriffO OriginalGriff

              I'm not sure I trust computers that much. Can I suggest an improvement?

                          string valueStr = value.ToString();
                          if (valueStr.Equals("true", StringComparison.CurrentCultureIgnoreCase))
                          {
                              PDFIncludeWatermark\_ = "true";
                          }
                          else if (valueStr.Equals("false", StringComparison.CurrentCultureIgnoreCase))
                          {
                              PDFIncludeWatermark\_ = "false";
                          }
                          else
                          {
                              PDFIncludeWatermark\_ = "maybe";
                          }
              

              Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

              T Offline
              T Offline
              Tallmaris
              wrote on last edited by
              #13

              The else section should return "filenotfound" I believe! ;P

              else
              {
              PDFIncludeWatermark_ = "filenotfound";
              }

              FTFY :-D

              OriginalGriffO R 2 Replies Last reply
              0
              • T Tallmaris

                The else section should return "filenotfound" I believe! ;P

                else
                {
                PDFIncludeWatermark_ = "filenotfound";
                }

                FTFY :-D

                OriginalGriffO Offline
                OriginalGriffO Offline
                OriginalGriff
                wrote on last edited by
                #14

                I disagree: the concepts of truth and falsehood do not have anything to do with file systems! However, in the real world I doubt the existence of "absolute truth" and "absolute falsehood" so a "maybe" response seems reasonable... :laugh:

                Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

                "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

                T 1 Reply Last reply
                0
                • OriginalGriffO OriginalGriff

                  I disagree: the concepts of truth and falsehood do not have anything to do with file systems! However, in the real world I doubt the existence of "absolute truth" and "absolute falsehood" so a "maybe" response seems reasonable... :laugh:

                  Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

                  T Offline
                  T Offline
                  Tallmaris
                  wrote on last edited by
                  #15

                  eheh, you are right. Anyway, I was just quoting one of the most famous WTF: http://thedailywtf.com/Articles/What_Is_Truth_0x3f_.aspx[^] :D

                  OriginalGriffO 1 Reply Last reply
                  0
                  • T Tallmaris

                    eheh, you are right. Anyway, I was just quoting one of the most famous WTF: http://thedailywtf.com/Articles/What_Is_Truth_0x3f_.aspx[^] :D

                    OriginalGriffO Offline
                    OriginalGriffO Offline
                    OriginalGriff
                    wrote on last edited by
                    #16

                    Not seen that before - thanks!

                    Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

                    "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
                    "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

                    1 Reply Last reply
                    0
                    • T Tallmaris

                      The else section should return "filenotfound" I believe! ;P

                      else
                      {
                      PDFIncludeWatermark_ = "filenotfound";
                      }

                      FTFY :-D

                      R Offline
                      R Offline
                      Rick Shaub
                      wrote on last edited by
                      #17

                      Dang! Beat me to it. Marking it as "news" is pretty hilarious.

                      1 Reply Last reply
                      0
                      • V Vladimir Svyatski

                        I've just found an "excellent" way to detect if boolean value is true or not in C#. Just great! Important, "value" variable is System.Boolean.

                                    string valueStr = value.ToString();
                                    if (valueStr.Equals("true", StringComparison.CurrentCultureIgnoreCase))
                                    {
                                        PDFIncludeWatermark\_ = "true";
                                    }
                                    else
                                    {
                                        PDFIncludeWatermark\_ = "false";
                                    }
                        
                        B Offline
                        B Offline
                        Baruch23
                        wrote on last edited by
                        #18

                        Dear VUnreal, Please find below a simplified code segment that may help you in achieving your code in one line using a helper class. please feel free to add additional checks and safeguards, and rewrite the helper as an extension to the string class.

                        string valueStr = value.ToString();
                        TruthChecker tc=new TruthChecker();
                        // now notice how simple: we do not use 'if', just call our helper once:
                        PDFIncludeWatermark_ = tc.CheckIfTrue();

                        class TruthChecker
                        {
                            private static List<string> \_truths = null; // static - optimaze time as the calculation is only done if needed and even so , only once!
                            List<string> Truths { get { return \_truths!=null ? \_truths : (\_truths = FindAllTruths() ); } }
                        
                            TruthChecker() {
                            }
                        
                            private static List<string> FindAllTruths() {
                                 List<string> allTruths = new List<string>();
                                 char\[\] t = {'t','r','u','e'};
                                 for(int i=0;i<Math.Pow(2,t.Length); i++) {
                                    StringBuilder sb = new StringBuilder();
                                    for(int j=0; j<t.Length; j++) {
                                        int k = (i>>j)&1;
                                        sb.Append(t\[j\]+('A'-'a')\*k);
                                    }
                                    allTruths.Add(sb.ToString());
                                }
                                return allTruths;
                            }
                        
                            public string CheckIfTrue(string tru)
                            {
                                try {
                                    var v = 
                                        from t in Truths
                                        where t == tru
                                        select t;
                        
                                    if (v.ElementAt(0).ToString().Length == "true".Length) {
                                        return "true";
                                    }
                                } catch (Exception ex) {
                                    tru = ex.Message;
                                }
                                return "false";
                            }
                        }
                        

                        Please visit IOCCC.org to learn more about useful coding techniques.

                        1 Reply Last reply
                        0
                        • M musefan

                          :laugh: haha, what a joke! You could make this so much simpler by just having...

                          PDFIncludeWatermark_ = value.ToString().ToLowerInvarient().Contains("true") ? "true" : "false";

                          I may or may not be responsible for my own actions

                          R Offline
                          R Offline
                          R Erasmus
                          wrote on last edited by
                          #19

                          depends what type of programming style you're into. Some might find the mentioned method easier/simpler to read/understand.

                          "Program testing can be used to show the presence of bugs, but never to show their absence." << please vote!! >>

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