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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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    Marc Clifton
    wrote on last edited by
    #10

    Exactly. :)

    1 Reply Last reply
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    • D Deflinek

      I'm not quite sure what was unexpected here. If you mean the ProcessCarrierAnimations() never gets called if (more == true) then it really was expected :) However changing || to | will make it called regardless of more's value.

      -- "My software never has bugs. It just develops random features."

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      Marc Clifton
      wrote on last edited by
      #11

      deflinek wrote:

      However changing || to | will make it called regardless of more's value.

      Yup! Marc

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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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        Marc Clifton
        wrote on last edited by
        #12

        Yup. | Marc

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        • OriginalGriffO OriginalGriff

          I assume you meant it to do this:

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

          :laugh: Would do the same in C and C++ as well.

          Those who fail to learn history are doomed to repeat it. --- George Santayana (December 16, 1863 – September 26, 1952) Those who fail to clear history are doomed to explain it. --- OriginalGriff (February 24, 1959 – ∞)

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          Marc Clifton
          wrote on last edited by
          #13

          OriginalGriff wrote:

          more = ProcessCarrierAnimations() || more;

          Quite so. The bitwise | operator solves the problem too. Marc

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

            I assume that you want to run the second method if first returns true, if that the case you have to switch the order

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

            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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            Marc Clifton
            wrote on last edited by
            #14

            Kornfeld Eliyahu Peter wrote:

            you have to switch the order

            Yes indeed. Or use the bitwise operator. Marc

            Kornfeld Eliyahu PeterK D 2 Replies 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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              Rage
              wrote on last edited by
              #15

              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.

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              • M Marc Clifton

                OriginalGriff wrote:

                more = ProcessCarrierAnimations() || more;

                Quite so. The bitwise | operator solves the problem too. Marc

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

                Yes - but I don't like bitwise operators with bools...

                Those who fail to learn history are doomed to repeat it. --- George Santayana (December 16, 1863 – September 26, 1952) Those who fail to clear history are doomed to explain it. --- OriginalGriff (February 24, 1959 – ∞)

                "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

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                • N Nish Nishant

                  |

                  Regards, Nish


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

                  R Offline
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                  Rage
                  wrote on last edited by
                  #17

                  Yep, but this is a workaround, not a best practice though.

                  ~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.

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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

                    Kornfeld Eliyahu PeterK Offline
                    Kornfeld Eliyahu PeterK Offline
                    Kornfeld Eliyahu Peter
                    wrote on last edited by
                    #18

                    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)

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

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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.

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                      B Offline
                      BobJanova
                      wrote on last edited by
                      #19

                      There's actually some nice concise uses of

                      var result = DoSomething() && DoSomethingThatDependsOnIt();
                      var result = DoSomething() || HandleFailureCase();

                      It's even better in languages where you can use non-boolean types with the boolean operators.

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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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                        Keith Barrow
                        wrote on last edited by
                        #20

                        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 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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                          PIEBALDconsult
                          wrote on last edited by
                          #21

                          more |= ProcessCarrierAnimations(); ?

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

                          1 Reply Last reply
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                          • M Marc Clifton

                            You should be able to glean what the programmer intends to happen from the code. :) Marc

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                            Bassam Abdul Baki
                            wrote on last edited by
                            #22

                            Marc Clifton wrote:

                            You should be able to glean what the programmer intends to happen from the code. :)

                            Riiiiiiiiiiight!!! :)

                            Web - BM - RSS - Math - LinkedIn

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                            • B BobJanova

                              There's actually some nice concise uses of

                              var result = DoSomething() && DoSomethingThatDependsOnIt();
                              var result = DoSomething() || HandleFailureCase();

                              It's even better in languages where you can use non-boolean types with the boolean operators.

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                              Rage
                              wrote on last edited by
                              #23

                              Let's say I have never seen these two lines of code, OK ?

                              ~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.

                              1 Reply Last reply
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                              • M Marc Clifton

                                You should be able to glean what the programmer intends to happen from the code. :) Marc

                                S Offline
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                                Simon_Whale
                                wrote on last edited by
                                #24

                                Have you been to QA lately? :laugh:

                                Every day, thousands of innocent plants are killed by vegetarians. Help end the violence EAT BACON

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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
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                                  Andy Brummer
                                  wrote on last edited by
                                  #25

                                  var more = more || initalizeMore(); is a common practice in javascript.

                                  Curvature of the Mind now with 3D

                                  1 Reply Last reply
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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)

                                    F Offline
                                    F Offline
                                    Forogar
                                    wrote on last edited by
                                    #26

                                    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 1 Reply Last reply
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                                    • B BobJanova

                                      There's actually some nice concise uses of

                                      var result = DoSomething() && DoSomethingThatDependsOnIt();
                                      var result = DoSomething() || HandleFailureCase();

                                      It's even better in languages where you can use non-boolean types with the boolean operators.

                                      F Offline
                                      F Offline
                                      Forogar
                                      wrote on last edited by
                                      #27

                                      Ouch! && Ouch! || Ouch!

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

                                      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

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                                        Pete OHanlon
                                        wrote on last edited by
                                        #28

                                        Now, I'm not going to look at the other answers before I post so I don't know if others have got it right, or if there are additional nuggets of information. If ProcessFlyouts returns true then the second test isn't carried out - it's a conditional OR statement. So, if you want ProcessCarrierAnimations to be evaluated, convert it to

                                        more = more | ProcessCarrierAnimations();

                                        1 Reply Last reply
                                        0
                                        • 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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