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  3. Look what I found

Look what I found

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  • System FaultE System Fault

    Look what I found

    Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

    Ype KingmaK This user is from outside of this forum
    Ype KingmaK This user is from outside of this forum
    Ype Kingma
    wrote last edited by
    #17

    @error

    Three lines too many. I thought serious programmers were lazy.

    SteveF 1 Reply Last reply
    0
    • System FaultE System Fault

      Look what I found

      Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

      The Penguin of EvilE This user is from outside of this forum
      The Penguin of EvilE This user is from outside of this forum
      The Penguin of Evil
      wrote last edited by
      #18

      @error It's an utter pain in the arse when writing a compiler too, and even worse is when goto gets involved.

      1 Reply Last reply
      0
      • MichaelM Michael

        @error that's wild. I wonder how this would be treated by different formatters/style enforcers and if it would break

        System FaultE This user is from outside of this forum
        System FaultE This user is from outside of this forum
        System Fault
        wrote last edited by
        #19

        @mikee I actually tried it. It works just fine to my surprise. But the clangd formatter gone mad:

        MichaelM h3mmy :v_enby:H 2 Replies Last reply
        0
        • System FaultE System Fault

          @_the_cloud Yeah, but if you click the link, they actually use default case there.

          poleguy looking for lost toolsP This user is from outside of this forum
          poleguy looking for lost toolsP This user is from outside of this forum
          poleguy looking for lost tools
          wrote last edited by
          #20

          @error @_the_cloud Only in the original example, not in the first two. I'd set it to 3 and chuckle too. I'm an FPGA guy, so I always think about else/default.

          1 Reply Last reply
          0
          • System FaultE System Fault

            Look what I found

            Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

            poleguy looking for lost toolsP This user is from outside of this forum
            poleguy looking for lost toolsP This user is from outside of this forum
            poleguy looking for lost tools
            wrote last edited by
            #21

            @error gloop, arfle, barfle says it all.

            1 Reply Last reply
            0
            • System FaultE System Fault

              @mikee I actually tried it. It works just fine to my surprise. But the clangd formatter gone mad:

              MichaelM This user is from outside of this forum
              MichaelM This user is from outside of this forum
              Michael
              wrote last edited by
              #22

              @error ha! Thanks for testing!

              1 Reply Last reply
              0
              • System FaultE System Fault

                Look what I found

                Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

                Scott :mbta_glx:S This user is from outside of this forum
                Scott :mbta_glx:S This user is from outside of this forum
                Scott :mbta_glx:
                wrote last edited by
                #23

                @error it's beautiful

                1 Reply Last reply
                0
                • System FaultE System Fault

                  Look what I found

                  Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

                  Malcolm HerbertM This user is from outside of this forum
                  Malcolm HerbertM This user is from outside of this forum
                  Malcolm Herbert
                  wrote last edited by
                  #24

                  @error reminds me of Duff's Device for abitrary length byte copy using the switch as an index into an architecture-appropriate unrolled loop https://en.wikipedia.org/wiki/Duff%27s_device

                  1 Reply Last reply
                  0
                  • Vaporeon :vaporeon:V Vaporeon :vaporeon:

                    @error That's super neat, I didn't know! I'll probably use this in my code at a some point...

                    System FaultE This user is from outside of this forum
                    System FaultE This user is from outside of this forum
                    System Fault
                    wrote last edited by
                    #25

                    @vaporeon_ please don't 😃

                    1 Reply Last reply
                    0
                    • System FaultE System Fault

                      Look what I found

                      Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

                      Western InfidelsW This user is from outside of this forum
                      Western InfidelsW This user is from outside of this forum
                      Western Infidels
                      wrote last edited by
                      #26

                      @error I don't think I ever would have tried to pass that off, myself, but I sort of admire the fact that, even though it's language abuse, it produces a predictable outcome. C has a lot of undefined behavior, but somehow, this isn't.

                      I think I tried to use Duff's Device in a project once, but my colleagues objected and made me change it. Or maybe I just explained Duff's Device to them and they were horrified. Like, "I don't know if I can trust that guy anymore" horrified. It was a long time ago.

                      This is interesting but it's not really saving a ton of time or code space. I think Duff's Device is probably more defensible.

                      System FaultE 1 Reply Last reply
                      0
                      • System FaultE System Fault

                        Look what I found

                        Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

                        ewhacE This user is from outside of this forum
                        ewhacE This user is from outside of this forum
                        ewhac
                        wrote last edited by
                        #27

                        @error @TomDuff, call your office...

                        Tom DuffT 1 Reply Last reply
                        0
                        • mmu_manM mmu_man

                          @error yup that's how Contiki implemented Protothreads initially:

                          https://dunkels.com/adam/pt/

                          ewhacE This user is from outside of this forum
                          ewhacE This user is from outside of this forum
                          ewhac
                          wrote last edited by
                          #28

                          @mmu_man @error Never heard of these before; thank you!

                          1 Reply Last reply
                          0
                          • Western InfidelsW Western Infidels

                            @error I don't think I ever would have tried to pass that off, myself, but I sort of admire the fact that, even though it's language abuse, it produces a predictable outcome. C has a lot of undefined behavior, but somehow, this isn't.

                            I think I tried to use Duff's Device in a project once, but my colleagues objected and made me change it. Or maybe I just explained Duff's Device to them and they were horrified. Like, "I don't know if I can trust that guy anymore" horrified. It was a long time ago.

                            This is interesting but it's not really saving a ton of time or code space. I think Duff's Device is probably more defensible.

                            System FaultE This user is from outside of this forum
                            System FaultE This user is from outside of this forum
                            System Fault
                            wrote last edited by
                            #29

                            @WesternInfidels It produces warning, so I personally won't use it. But it looks beautiful

                            1 Reply Last reply
                            0
                            • System FaultE System Fault

                              Look what I found

                              Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

                              elle mundyE This user is from outside of this forum
                              elle mundyE This user is from outside of this forum
                              elle mundy
                              wrote last edited by
                              #30

                              @error reminds me of duff’s device https://en.wikipedia.org/wiki/Duff%27s_device

                              1 Reply Last reply
                              0
                              • ewhacE ewhac

                                @error @TomDuff, call your office...

                                Tom DuffT This user is from outside of this forum
                                Tom DuffT This user is from outside of this forum
                                Tom Duff
                                wrote last edited by
                                #31

                                @ewhac @error Insane. No one in his right mind calls functions arfle and barfle.

                                1 Reply Last reply
                                0
                                • System FaultE System Fault

                                  Look what I found

                                  Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

                                  Kelly SchultzS This user is from outside of this forum
                                  Kelly SchultzS This user is from outside of this forum
                                  Kelly Schultz
                                  wrote last edited by
                                  #32

                                  @error time to see who at my workplace I can aggravate the most

                                  1 Reply Last reply
                                  0
                                  • System FaultE System Fault

                                    Look what I found

                                    Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

                                    wyattW This user is from outside of this forum
                                    wyattW This user is from outside of this forum
                                    wyatt
                                    wrote last edited by
                                    #33
                                    @error yes
                                    1 Reply Last reply
                                    0
                                    • System FaultE System Fault

                                      Look what I found

                                      Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

                                      wyattW This user is from outside of this forum
                                      wyattW This user is from outside of this forum
                                      wyatt
                                      wrote last edited by
                                      #34
                                      @error this is devious and i love it
                                      1 Reply Last reply
                                      0
                                      • System FaultE System Fault

                                        Look what I found

                                        Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

                                        koorogiK This user is from outside of this forum
                                        koorogiK This user is from outside of this forum
                                        koorogi
                                        wrote last edited by
                                        #35

                                        @error musl does this in its printf implementation: https://git.musl-libc.org/cgit/musl/tree/src/stdio/vfprintf.c#n597

                                        System FaultE 1 Reply Last reply
                                        0
                                        • System FaultE System Fault

                                          Look what I found

                                          Here: http://pigeonsnest.co.uk/stuff/pigeons-device.html

                                          Eckes :mastodon:E This user is from outside of this forum
                                          Eckes :mastodon:E This user is from outside of this forum
                                          Eckes :mastodon:
                                          wrote last edited by
                                          #36

                                          @error wow it does not even -Wextra the nested labels

                                          1 Reply Last reply
                                          0
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