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PQOTD

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  • J Jorgen Andersson

    Is it just me that would have done it as a oneliner?

    Wrong is evil and must be defeated. - Jeff Ello[^]

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    PIEBALDconsult
    wrote on last edited by
    #36

    That could make setting a breakpoint on the second call difficult. :shrug:

    You'll never get very far if all you do is follow instructions.

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    • P PIEBALDconsult

      That could make setting a breakpoint on the second call difficult. :shrug:

      You'll never get very far if all you do is follow instructions.

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      J Offline
      Jorgen Andersson
      wrote on last edited by
      #37

      No big deal to change if necessary. :shrug: But I actually find it easier to read on one line.

      Wrong is evil and must be defeated. - Jeff Ello[^]

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      • M Marc Clifton

        Programming Quiz of the day. I just wrote this code (C#), which did something very unexpected. What was it that it unexpectedly did?

        		bool more = ProcessFlyouts();
        		more = more || ProcessCarrierAnimations();
        

        How would you change it to "do the right thing?" Marc

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        Ennis Ray Lynch Jr
        wrote on last edited by
        #38

        -|

        Need custom software developed? I do custom programming based primarily on MS tools with an emphasis on C# development and consulting. "And they, since they Were not the one dead, turned to their affairs" -- Robert Frost "All users always want Excel" --Ennis Lynch

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        • M Marc Clifton

          Programming Quiz of the day. I just wrote this code (C#), which did something very unexpected. What was it that it unexpectedly did?

          		bool more = ProcessFlyouts();
          		more = more || ProcessCarrierAnimations();
          

          How would you change it to "do the right thing?" Marc

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          R Offline
          Ravi Bhavnani
          wrote on last edited by
          #39

          There's a risk that ProcessCarrierAnimations() may never be invoked, so the right thing (IMHO) would be to do something like this:

          bool processFlyouts = ProcessFlyouts();
          bool processCarrierAnimations = ProcessCarrierAnimations();
          bool more = processFlyouts || processCarrierAnimations;

          /ravi

          My new year resolution: 2048 x 1536 Home | Articles | My .NET bits | Freeware ravib(at)ravib(dot)com

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          • M Marc Clifton

            Kornfeld Eliyahu Peter wrote:

            you have to switch the order

            Yes indeed. Or use the bitwise operator. Marc

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            dan sh
            wrote on last edited by
            #40

            Marc Clifton wrote:

            bitwise operator

            So boolean is foolish?

            My CP workspace: Incredibly trivial and probably useless code samples[^]

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            • M Marc Clifton

              Programming Quiz of the day. I just wrote this code (C#), which did something very unexpected. What was it that it unexpectedly did?

              		bool more = ProcessFlyouts();
              		more = more || ProcessCarrierAnimations();
              

              How would you change it to "do the right thing?" Marc

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              D Offline
              dan sh
              wrote on last edited by
              #41

              No it did not do anything unexpected. || operator uses short-circuit evaluation. I would assume the intent was to call ProcessCarrierAnimations only if more was false.

              My CP workspace: Incredibly trivial and probably useless code samples[^]

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              • Kornfeld Eliyahu PeterK Kornfeld Eliyahu Peter

                Yeah! It compiles. After then you can rub your head to find where the bug is!

                I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)

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                JimmyRopes
                wrote on last edited by
                #42

                Kornfeld Eliyahu Peter wrote:

                It compiles. After then you someone else will can rub your their head to find where the bug is!

                FTFY :-D

                The report of my death was an exaggeration - Mark Twain
                Simply Elegant Designs JimmyRopes Designs
                I'm on-line therefore I am. JimmyRopes

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                • M Marc Clifton

                  Programming Quiz of the day. I just wrote this code (C#), which did something very unexpected. What was it that it unexpectedly did?

                  		bool more = ProcessFlyouts();
                  		more = more || ProcessCarrierAnimations();
                  

                  How would you change it to "do the right thing?" Marc

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                  C Offline
                  Chris Quinn
                  wrote on last edited by
                  #43

                  It compiled?

                  ========================================================= I'm an optoholic - my glass is always half full of vodka. =========================================================

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                  • P PIEBALDconsult

                    I never follow other peoples' rules. :cool:

                    You'll never get very far if all you do is follow instructions.

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                    S Offline
                    SortaCore
                    wrote on last edited by
                    #44

                    It's my rule that people have to breathe (or die trying).

                    1 Reply Last reply
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                    • M Marc Clifton

                      Programming Quiz of the day. I just wrote this code (C#), which did something very unexpected. What was it that it unexpectedly did?

                      		bool more = ProcessFlyouts();
                      		more = more || ProcessCarrierAnimations();
                      

                      How would you change it to "do the right thing?" Marc

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                      Adam Tibi
                      wrote on last edited by
                      #45

                      This is JavaScript style, the developer meant, if "more" is "undefined" then try the other option ProcessCarrierAnimations(). But obviously, this doesn't work in C#.

                      Make it simple, as simple as possible, but not simpler.

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                      • M Marc Clifton

                        Programming Quiz of the day. I just wrote this code (C#), which did something very unexpected. What was it that it unexpectedly did?

                        		bool more = ProcessFlyouts();
                        		more = more || ProcessCarrierAnimations();
                        

                        How would you change it to "do the right thing?" Marc

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                        G Offline
                        Gary Wheeler
                        wrote on last edited by
                        #46

                        Just to be contrary:

                        bool more = false;
                        if (ProcessFlyouts()) more = true;
                        if (ProcessCarrierAnimations()) more = true;

                        Software Zen: delete this;

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                        • N Nish Nishant

                          |

                          Regards, Nish


                          Blog: voidnish.wordpress.com Latest article: C++ 11 features in Visual C++ 2013 Preview

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                          Gary Wheeler
                          wrote on last edited by
                          #47

                          Yuck. One of my least favorite things when reading someone else's C/C++ code is when they mix logical and bit-wise operators in an expression. In this case, using a bit-wise operator on bool values just seems wrong.

                          Software Zen: delete this;

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                          • G Gary Wheeler

                            Yuck. One of my least favorite things when reading someone else's C/C++ code is when they mix logical and bit-wise operators in an expression. In this case, using a bit-wise operator on bool values just seems wrong.

                            Software Zen: delete this;

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                            Nish Nishant
                            wrote on last edited by
                            #48

                            I agree, it's not something I'd use myself. I was only answering Marc's academic question :-)

                            Regards, Nish


                            Blog: voidnish.wordpress.com Latest article: C++ 11 features in Visual C++ 2013 Preview

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                            • N Nish Nishant

                              I agree, it's not something I'd use myself. I was only answering Marc's academic question :-)

                              Regards, Nish


                              Blog: voidnish.wordpress.com Latest article: C++ 11 features in Visual C++ 2013 Preview

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                              Gary Wheeler
                              wrote on last edited by
                              #49

                              I thought that was the case - your response just seemed rather unNish-like :laugh:.

                              Software Zen: delete this;

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                              • G Gary Wheeler

                                I thought that was the case - your response just seemed rather unNish-like :laugh:.

                                Software Zen: delete this;

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                                Nish Nishant
                                wrote on last edited by
                                #50

                                Heh :-)

                                Regards, Nish


                                Blog: voidnish.wordpress.com Latest article: C++ 11 features in Visual C++ 2013 Preview

                                1 Reply Last reply
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                                • B BobJanova

                                  It will run either ProcessFlyouts, or ProcessCarrierAnimations, or neither, and the variable will tell you if it successfully ran either. I would imagine you either want && or |.

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                                  James Curran
                                  wrote on last edited by
                                  #51

                                  >> It will run either ProcessFlyouts, or ProcessCarrierAnimations, or neither, Um... Not even close. It will, unquestionably, run ProcessFlyouts. It may also run ProcessCarrierAnimations.

                                  Truth, James

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                                  • M Marc Clifton

                                    Programming Quiz of the day. I just wrote this code (C#), which did something very unexpected. What was it that it unexpectedly did?

                                    		bool more = ProcessFlyouts();
                                    		more = more || ProcessCarrierAnimations();
                                    

                                    How would you change it to "do the right thing?" Marc

                                    J Offline
                                    J Offline
                                    James Curran
                                    wrote on last edited by
                                    #52

                                    The "early out" semantics of the logical operators (|| and &&) are the same for C#, C++, Java, and C, and have been well-specified since the First Edition of K&R C. How could the result possibly be unexpected?

                                    Truth, James

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                                    • J James Curran

                                      >> It will run either ProcessFlyouts, or ProcessCarrierAnimations, or neither, Um... Not even close. It will, unquestionably, run ProcessFlyouts. It may also run ProcessCarrierAnimations.

                                      Truth, James

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                                      BobJanova
                                      wrote on last edited by
                                      #53

                                      That is pretty close to what I said, although that was admittedly technically wrong. (I understand how || works but apparently failed in the challenge of writing English!) "Not even close" would be "it returns banana or grapefruit depending on the wolf".

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                                      • Kornfeld Eliyahu PeterK Kornfeld Eliyahu Peter

                                        I do not like that change from C/C++...I mean the | and || changes... X|

                                        I'm not questioning your powers of observation; I'm merely remarking upon the paradox of asking a masked man who he is. (V)

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                                        James Curran
                                        wrote on last edited by
                                        #54

                                        >> I do not like that change from C/C++...I mean the | and || changes... Exactly, what changes are those? I've used C# for 10 ten years, and C/C++ for the ten years before that, and have noticed no differences in the handling of logical operators.

                                        Truth, James

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                                        • M Marc Clifton

                                          Programming Quiz of the day. I just wrote this code (C#), which did something very unexpected. What was it that it unexpectedly did?

                                          		bool more = ProcessFlyouts();
                                          		more = more || ProcessCarrierAnimations();
                                          

                                          How would you change it to "do the right thing?" Marc

                                          R Offline
                                          R Offline
                                          RichardInToronto
                                          wrote on last edited by
                                          #55

                                          My bet is that ProcessCarrierAnimations isn't executed if ProcessFlyouts returns true. If ProcessCarrierAnimations should still be called, you could remove one of the "vertical bars", changing the "short-circuit" OR into a regular logical-OR. Richard

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