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PQOTD

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  • F Forogar

    This isn't a change from C++. It works the same way for both operators. Doesn't it? Now I'm going to have to read up on it, dammit!

    - 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
    #29

    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)

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

    F 1 Reply Last reply
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    • K Keith Barrow

      Though Nish's and OG's examples will work, I think it is symantically better to do this:

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

      Less terse code (normally bad) - but explicit in calling ProcessCarrierAnimations.

      PB 369,783 wrote:

      I just find him very unlikeable, and I think the way he looks like a prettier version of his Mum is very disturbing.[^]

      P Offline
      P Offline
      PIEBALDconsult
      wrote on last edited by
      #30

      "Eliminate needless local variables." :-D

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

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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)

          F Offline
          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
          0
          • 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

            J 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

              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
                          0
                          • 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

                                C Offline
                                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
                                  0
                                  • 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
                                    0
                                    • 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;

                                        N 1 Reply Last reply
                                        0
                                        • 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

                                          G 1 Reply Last reply
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