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  4. Just for fun - what's the output of this?

Just for fun - what's the output of this?

Scheduled Pinned Locked Moved C#
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  • R Rob Philpott

    ...if your idea of fun is as warped as mine. No Visual Studio allowed.

       static void Main(string\[\] args)
    
        {
    
            try
    
            {
    
                TestStatic.SaySomething("HI");
    
            }
    
            catch (Exception error)
    
            {
    
                Console.WriteLine(error.InnerException.Message);
    
            }
    
            try
    
            {
    
                TestStatic.SaySomething("Hi 2");
    
            }
    
            catch (Exception error)
    
            {
    
                Console.WriteLine(error.InnerException.Message);
    
            }
    
            Console.ReadLine();
    
        }
    
    }
    
    
    
    public class TestStatic
    
    {
    
        static TestStatic()
    
        {
    
            throw new Exception("Afternoon Exception");
    
        }
    
    
    
        public static void SaySomething(string message)
    
        {
    
            Console.WriteLine(message);
    
        }
    
    }
    

    Regards, Rob Philpott.

    L Offline
    L Offline
    Lost User
    wrote on last edited by
    #19

    Ok, well, you have a static ctor which will throw an exception the first time the type is used, so it would be:

    Afternoon Exception
    Hi 2

    Correct?

    R 1 Reply Last reply
    0
    • L Lost User

      Ok, well, you have a static ctor which will throw an exception the first time the type is used, so it would be:

      Afternoon Exception
      Hi 2

      Correct?

      R Offline
      R Offline
      Rob Philpott
      wrote on last edited by
      #20

      Nope!

      Regards, Rob Philpott.

      L 1 Reply Last reply
      0
      • R Rob Philpott

        That's a bit rude isn't it? Not sure I like you. And neither did I accuse you of cheating. Tut.

        Regards, Rob Philpott.

        L Offline
        L Offline
        Le centriste
        wrote on last edited by
        #21

        Hmmm I am not sure of this.... Anyway, my apologies if I offended you.

        R 1 Reply Last reply
        0
        • R Rob Philpott

          Can't compile with a static constructor?! Not sure they'd be much use in the language if that were the case. Sorry, you're wrong too.

          Regards, Rob Philpott.

          M Offline
          M Offline
          musefan
          wrote on last edited by
          #22

          hmmm... well as the TestStatic class is not static it can have a constructor, i just didnt know it could be static. but either way any static methods (i.e. SaySomething) can be called without the need to create an instance of your class, which you are not doing in your code. So both calls to the SaySomething method should be successful, can you explain why either would fail? i think not.

          Life goes very fast. Tomorrow, today is already yesterday.

          L R 2 Replies Last reply
          0
          • R Rob Philpott

            Nope!

            Regards, Rob Philpott.

            L Offline
            L Offline
            Lost User
            wrote on last edited by
            #23

            Ok, I rethought. The ctor fails, and that is bad. How about

            Afternoon Exception
            Afternoon Exception

            ?

            R M 2 Replies Last reply
            0
            • R Rob Philpott

              Can't compile with a static constructor?! Not sure they'd be much use in the language if that were the case. Sorry, you're wrong too.

              Regards, Rob Philpott.

              M Offline
              M Offline
              musefan
              wrote on last edited by
              #24

              what about... Afternoon Exception HI Hi 2 edit: no, that wouldnt happen if an exception is thrown when the program runs then surely it would just crash with the unhandled exception in the static constructor, no?

              Life goes very fast. Tomorrow, today is already yesterday.

              1 Reply Last reply
              0
              • M musefan

                hmmm... well as the TestStatic class is not static it can have a constructor, i just didnt know it could be static. but either way any static methods (i.e. SaySomething) can be called without the need to create an instance of your class, which you are not doing in your code. So both calls to the SaySomething method should be successful, can you explain why either would fail? i think not.

                Life goes very fast. Tomorrow, today is already yesterday.

                L Offline
                L Offline
                Le centriste
                wrote on last edited by
                #25

                Any class can have a static constructor, but it is highly recommended to make sure they never throw exceptions.

                1 Reply Last reply
                0
                • L Lost User

                  Ok, I rethought. The ctor fails, and that is bad. How about

                  Afternoon Exception
                  Afternoon Exception

                  ?

                  R Offline
                  R Offline
                  Rob Philpott
                  wrote on last edited by
                  #26

                  Good man! And we have a winner. Yep, the type initialiser fails both times - in short an exception in a static constructor is very bad news. Well done. :)

                  Regards, Rob Philpott.

                  L 1 Reply Last reply
                  0
                  • M musefan

                    hmmm... well as the TestStatic class is not static it can have a constructor, i just didnt know it could be static. but either way any static methods (i.e. SaySomething) can be called without the need to create an instance of your class, which you are not doing in your code. So both calls to the SaySomething method should be successful, can you explain why either would fail? i think not.

                    Life goes very fast. Tomorrow, today is already yesterday.

                    R Offline
                    R Offline
                    Rob Philpott
                    wrote on last edited by
                    #27

                    musefan wrote:

                    i think not

                    Really, what is wrong with you people? I think so as described below.

                    Regards, Rob Philpott.

                    1 Reply Last reply
                    0
                    • L Le centriste

                      Hmmm I am not sure of this.... Anyway, my apologies if I offended you.

                      R Offline
                      R Offline
                      Rob Philpott
                      wrote on last edited by
                      #28

                      Not offended at all Sir. :)

                      Regards, Rob Philpott.

                      1 Reply Last reply
                      0
                      • L Lost User

                        Ok, I rethought. The ctor fails, and that is bad. How about

                        Afternoon Exception
                        Afternoon Exception

                        ?

                        M Offline
                        M Offline
                        MNantu
                        wrote on last edited by
                        #29

                        Congratz! =) (Shame on me, SHAME ON ME!) ;P

                        1 Reply Last reply
                        0
                        • R Rob Philpott

                          Good man! And we have a winner. Yep, the type initialiser fails both times - in short an exception in a static constructor is very bad news. Well done. :)

                          Regards, Rob Philpott.

                          L Offline
                          L Offline
                          Le centriste
                          wrote on last edited by
                          #30

                          I ran your code for the fun of it, and although the exception message is output twice, the type initializer only fails once, as far as the debugger can tell.

                          1 Reply Last reply
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