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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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  • 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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