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Private assignment operator

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  • R Offline
    R Offline
    ragavan
    wrote on last edited by
    #1

    Hi Does anyone know what is the use of having the member function of the = operator has private? eg Class A { A& operator=(const A& a); public: void display() } what is the use of having A& operator=(const A& a)function has private ?

    J 1 Reply Last reply
    0
    • R ragavan

      Hi Does anyone know what is the use of having the member function of the = operator has private? eg Class A { A& operator=(const A& a); public: void display() } what is the use of having A& operator=(const A& a)function has private ?

      J Offline
      J Offline
      James R Twine
      wrote on last edited by
      #2

      To prevent people from using it.  For example, if you have a very complex object, or are just too lazy to implement a copy constructor and assignment operator. :)    Peace!

      -=- James
      Please rate this message - let me know if I helped or not! * * * If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
      Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
      See DeleteFXPFiles

      R 1 Reply Last reply
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      • J James R Twine

        To prevent people from using it.  For example, if you have a very complex object, or are just too lazy to implement a copy constructor and assignment operator. :)    Peace!

        -=- James
        Please rate this message - let me know if I helped or not! * * * If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
        Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
        See DeleteFXPFiles

        R Offline
        R Offline
        ragavan
        wrote on last edited by
        #3

        Hi Do you know how to do exception handling in constructor?

        J D 2 Replies Last reply
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        • R ragavan

          Hi Do you know how to do exception handling in constructor?

          J Offline
          J Offline
          James R Twine
          wrote on last edited by
          #4

          Yes, I know how to do both catching exceptions in the constructor, and catching them from the calling code that is invoking the constructor.    Peace!

          -=- James
          Please rate this message - let me know if I helped or not! * * * If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
          Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
          See DeleteFXPFiles

          A 1 Reply Last reply
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          • J James R Twine

            Yes, I know how to do both catching exceptions in the constructor, and catching them from the calling code that is invoking the constructor.    Peace!

            -=- James
            Please rate this message - let me know if I helped or not! * * * If you think it costs a lot to do it right, just wait until you find out how much it costs to do it wrong!
            Avoid driving a vehicle taller than you and remember that Professional Driver on Closed Course does not mean your Dumb Ass on a Public Road!
            See DeleteFXPFiles

            A Offline
            A Offline
            Arman S
            wrote on last edited by
            #5

            ... and where is your smile? :)

            -- ===== Arman

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            • R ragavan

              Hi Do you know how to do exception handling in constructor?

              D Offline
              D Offline
              David Crow
              wrote on last edited by
              #6

              See here.


              "A good athlete is the result of a good and worthy opponent." - David Crow

              "To have a respect for ourselves guides our morals; to have deference for others governs our manners." - Laurence Sterne

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