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PQOTD

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  • R Rage

    MISRA[^] Rule 33 & 34:

    The right hand operand of a || shall not contain side effects
    The operands of a logical || shall be primary expressions

    The example you gave is the very reason for the above two rules.

    ~RaGE();

    I think words like 'destiny' are a way of trying to find order where none exists. - Christian Graus Entropy isn't what it used to.

    P Offline
    P Offline
    PIEBALDconsult
    wrote on last edited by
    #31

    I never follow other peoples' rules. :cool:

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

    S 1 Reply Last reply
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    • Kornfeld Eliyahu PeterK Kornfeld Eliyahu Peter

      You have to! Otherwise you may end up with some mess if updating C/C++ to C# (what I'm doing just now)...

      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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      F Offline
      Forogar
      wrote on last edited by
      #32

      Nah! As long as it compiles...

      - I would love to change the world, but they won’t give me the source code.

      Kornfeld Eliyahu PeterK 1 Reply Last reply
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      • F Forogar

        Nah! As long as it compiles...

        - I would love to change the world, but they won’t give me the source code.

        Kornfeld Eliyahu PeterK Offline
        Kornfeld Eliyahu PeterK Offline
        Kornfeld Eliyahu Peter
        wrote on last edited by
        #33

        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)

        "It never ceases to amaze me that a spacecraft launched in 1977 can be fixed remotely from Earth." ― Brian Cox

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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

          Richard Andrew x64R Offline
          Richard Andrew x64R Offline
          Richard Andrew x64
          wrote on last edited by
          #34

          How about:

          more &= ProcessCarrierAnimations();

          The difficult we do right away... ...the impossible takes slightly longer.

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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
            Jorgen Andersson
            wrote on last edited by
            #35

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

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

            P 1 Reply Last reply
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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[^]

              P Offline
              P Offline
              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.

              J 1 Reply Last reply
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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.

                J Offline
                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[^]

                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

                  E Offline
                  E Offline
                  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

                  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

                    R Offline
                    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

                    1 Reply Last reply
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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

                      D Offline
                      D Offline
                      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[^]

                      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

                        D Offline
                        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[^]

                        1 Reply Last reply
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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)

                          J Offline
                          J Offline
                          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

                          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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                            C Offline
                            Chris Quinn
                            wrote on last edited by
                            #43

                            It compiled?

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

                            1 Reply Last reply
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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.

                              S Offline
                              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

                                A Offline
                                A Offline
                                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.

                                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

                                  G Offline
                                  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;

                                  1 Reply Last reply
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                                  • N Nish Nishant

                                    |

                                    Regards, Nish


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

                                    G Offline
                                    G Offline
                                    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;

                                      N Offline
                                      N Offline
                                      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

                                        G Offline
                                        G Offline
                                        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;

                                        N 1 Reply Last reply
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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;

                                          N Offline
                                          N Offline
                                          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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