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multiple inheritance

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  • M Martin 0

    Hello,

    seeitsharper wrote:

    Now if 2 classes do this (override the same base class) and you inherit both these classes then you can have a situation where you dont know which implementation of that method you are calling.

    If you are using Interfaces in a bad designed project (like seen here[^]), you could have simmilar problems.

    All the best, Martin

    K Offline
    K Offline
    kalyan_2416
    wrote on last edited by
    #15

    class c { void i1.function_some() { // body } void i2.function_some() { // body } } class c1:c { c dd =new c(); i1 i=(i1)dd; i.funcion_some();-----gets the function of interface i1 in class c i2 i_d=new c(); i_d.function_some();---gets the function of interface i2 in class c with the help of type casting i can get the individual definition of the functions } i think this will lead to some ambguity...!

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    • C Colin Angus Mackay

      kalyan_2416 wrote:

      i am not understanding y it is not there in c# and there in vb

      I doubt that VB.NET has multiple inheritance because it is a limitation of the CLR rather than the language.


      -- Always write code as if the maintenance programmer were an axe murderer who knows where you live. Upcoming FREE developer events: * Glasgow: Agile in the Enterprise Vs. ISVs, Mock Objects, SQL Server CLR Integration, Reporting Services, db4o ... * Reading: SQL Bits My website

      M Offline
      M Offline
      Martin 0
      wrote on last edited by
      #16

      Again, a stupid downvoter on your side! What are you doing to people here? Are you sending spam mails over your account, or is it rude for somebody that you try to help? Got my 5

      All the best, Martin

      K C 2 Replies Last reply
      0
      • C Christian Graus

        That's just plain retarded, IMO. But the big question is, does VB really allow it ?

        Christian Graus - Microsoft MVP - C++ "I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )

        S Offline
        S Offline
        seeitsharper
        wrote on last edited by
        #17

        Christian Graus wrote:

        That's just plain retarded

        Really, I hope you are not refering to my example. I was trying to raise a point about it.


        Keep your eyes open, you might spot alternatives.

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        • M Martin 0

          Hello,

          seeitsharper wrote:

          Now if 2 classes do this (override the same base class) and you inherit both these classes then you can have a situation where you dont know which implementation of that method you are calling.

          If you are using Interfaces in a bad designed project (like seen here[^]), you could have simmilar problems.

          All the best, Martin

          S Offline
          S Offline
          seeitsharper
          wrote on last edited by
          #18

          No, the point I was making was that you are inheriting behaviour. Interfaces have no behviour thus the problem is different. I agree on the what constitutes Good and bad design and perhaps Microsoft could have came up with a MI solution that worked.


          Keep your eyes open, you might spot alternatives.

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          • M Martin 0

            Again, a stupid downvoter on your side! What are you doing to people here? Are you sending spam mails over your account, or is it rude for somebody that you try to help? Got my 5

            All the best, Martin

            K Offline
            K Offline
            kalyan_2416
            wrote on last edited by
            #19

            i m sorry for that i happy for the response.. i am here to learn... i am not rude on anyone as such!!!!!!!!!!

            M 1 Reply Last reply
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            • K kalyan_2416

              i m sorry for that i happy for the response.. i am here to learn... i am not rude on anyone as such!!!!!!!!!!

              M Offline
              M Offline
              Martin 0
              wrote on last edited by
              #20

              Got my 5 for that! :rose:

              All the best, Martin

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              • M Martin 0

                Christian Graus wrote:

                which is why C# should support MI, because it can be very useful in good designs

                Can be said loud and proud!!

                All the best, Martin

                P Offline
                P Offline
                PIEBALDconsult
                wrote on last edited by
                #21

                Perhaps in an unsafe context? :-D Meaning only that unsafe indicates to the compiler, "I know what I'm doing, let me through." Hmmm... maybe unsafe could also be used to allow fall-through in switches...

                M 1 Reply Last reply
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                • P PIEBALDconsult

                  Perhaps in an unsafe context? :-D Meaning only that unsafe indicates to the compiler, "I know what I'm doing, let me through." Hmmm... maybe unsafe could also be used to allow fall-through in switches...

                  M Offline
                  M Offline
                  Martin 0
                  wrote on last edited by
                  #22

                  :) I realy enjoy reading, when you are talking to yourself. Like this one[^]!

                  All the best, Martin

                  P 1 Reply Last reply
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                  • M Martin 0

                    :) I realy enjoy reading, when you are talking to yourself. Like this one[^]!

                    All the best, Martin

                    P Offline
                    P Offline
                    PIEBALDconsult
                    wrote on last edited by
                    #23

                    Glad to be of service. :-D

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                    • M Martin 0

                      Again, a stupid downvoter on your side! What are you doing to people here? Are you sending spam mails over your account, or is it rude for somebody that you try to help? Got my 5

                      All the best, Martin

                      C Offline
                      C Offline
                      Colin Angus Mackay
                      wrote on last edited by
                      #24

                      Martin# wrote:

                      What are you doing to people here?

                      I have no idea. I can only guess that I gave someone some advice they didn't actually want to hear.


                      -- Always write code as if the maintenance programmer were an axe murderer who knows where you live. Upcoming FREE developer events: * Glasgow: Agile in the Enterprise Vs. ISVs, Mock Objects, SQL Server CLR Integration, Reporting Services, db4o ... * Reading: SQL Bits My website

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