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Technically correct but practically useless

Scheduled Pinned Locked Moved The Lounge
csharpc++iotquestion
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  • B BorkenkaeferFrisstFichten

    The correct phrase is: the quick brown fox jumps over the lazy dogs back 0123456789 That was the final test the engineer made after the telex device had been installed at the customer's premises. The funny "phrase" contains all characters a Telex had to be able to receive and transmit correctly via POTS using its very own error-correction. At the time this was relevant, it was very much useful as it had been an industry standard procedure. It was also used for testing serial terminals' keyboards.

    honey the codewitchH Offline
    honey the codewitchH Offline
    honey the codewitch
    wrote on last edited by
    #11

    Mine was accurate, just truncated at the s :laugh:

    To err is human. Fortune favors the monsters.

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    • Sander RosselS Sander Rossel

      I have a simple(r) solution. Print the character to an image (in-memory, obviously). Now connect to some OCR service and let it scan the image. If the result is null, "", " " or " " it's whitespace. Just thinking outside the box :D

      Best, Sander Azure DevOps Succinctly (free eBook) Azure Serverless Succinctly (free eBook) Migrating Apps to the Cloud with Azure arrgh.js - Bringing LINQ to JavaScript

      honey the codewitchH Offline
      honey the codewitchH Offline
      honey the codewitch
      wrote on last edited by
      #12

      *angeryface* :mad:

      To err is human. Fortune favors the monsters.

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      0
      • L Lost User

        Hmmm, Can you go into technical details about the difficulties? I can't figure out why you need 'a massive table'.

        honey the codewitchH Offline
        honey the codewitchH Offline
        honey the codewitch
        wrote on last edited by
        #13

        The table isn't as big as a thought. A long time ago I wrote something to spit out character class tables, and I thought I remembered the whitespace one being huge. It's not, now that I looked it up. Still, it's larger than I'd like.

        To err is human. Fortune favors the monsters.

        L 1 Reply Last reply
        0
        • honey the codewitchH honey the codewitch

          The table isn't as big as a thought. A long time ago I wrote something to spit out character class tables, and I thought I remembered the whitespace one being huge. It's not, now that I looked it up. Still, it's larger than I'd like.

          To err is human. Fortune favors the monsters.

          L Offline
          L Offline
          Lost User
          wrote on last edited by
          #14

          honey the codewitch wrote:

          Still, it's larger than I'd like.

          I don't think you need to check for all of them. I think you can get away with just 12. isWhitespace[^] Btw, now that .NET is using ICU[^] this should match the C# behavior. (I just checked ICU docs to confirm)

          honey the codewitchH 1 Reply Last reply
          0
          • honey the codewitchH honey the codewitch

            So I'm wrapping this

            The quick brown fox jumped over the lazy dog

            And I've traversed all the nastiness with Unicode's non-breaking spaces, and invisible breaks and all of that. I get this:

            The quick
            brown
            fox jumped
            over the
            lazy dog

            Look at the 2nd line. "Oh just remove the whitespace around the line" they said "It will be easy" they said "You can call char.IsWhitespace()" except wait. This isn't .NET. It's an IoT machine with C++ C++ doesn't do 32-bit codepoints out of the box. Do have any idea how hard it is to determine if a character is whitespace in Unicode? I need a massive table. *headdesk*

            To err is human. Fortune favors the monsters.

            T Offline
            T Offline
            TheRealSteveJudge
            wrote on last edited by
            #15

            No idea, but shouldn't it be "The quick brown fox jumps over the lazy dog"? :laugh:

            M 1 Reply Last reply
            0
            • L Lost User

              honey the codewitch wrote:

              Still, it's larger than I'd like.

              I don't think you need to check for all of them. I think you can get away with just 12. isWhitespace[^] Btw, now that .NET is using ICU[^] this should match the C# behavior. (I just checked ICU docs to confirm)

              honey the codewitchH Offline
              honey the codewitchH Offline
              honey the codewitch
              wrote on last edited by
              #16

              Yeah, but I'm not using .NET, and my platform doesn't understand unicode beyond wchar_t which I can't even use.

              To err is human. Fortune favors the monsters.

              L 1 Reply Last reply
              0
              • honey the codewitchH honey the codewitch

                Yeah, but I'm not using .NET, and my platform doesn't understand unicode beyond wchar_t which I can't even use.

                To err is human. Fortune favors the monsters.

                L Offline
                L Offline
                Lost User
                wrote on last edited by
                #17

                honey the codewitch wrote:

                Yeah, but I'm not using .NET, and my platform doesn't understand unicode

                Nobody in this thread thinks you are using .NET I'm saying that you can write a C function for your IoT device that will duplicate Java and C# whitespace behavior simply by checking for those 12 values. They are all doing the same thing as ICU.

                honey the codewitchH 1 Reply Last reply
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                • L Lost User

                  honey the codewitch wrote:

                  Yeah, but I'm not using .NET, and my platform doesn't understand unicode

                  Nobody in this thread thinks you are using .NET I'm saying that you can write a C function for your IoT device that will duplicate Java and C# whitespace behavior simply by checking for those 12 values. They are all doing the same thing as ICU.

                  honey the codewitchH Offline
                  honey the codewitchH Offline
                  honey the codewitch
                  wrote on last edited by
                  #18

                  Ohhhh thanks. Sorry, it was early and I was still a bit slow. I'll do that.

                  To err is human. Fortune favors the monsters.

                  1 Reply Last reply
                  0
                  • honey the codewitchH honey the codewitch

                    So I'm wrapping this

                    The quick brown fox jumped over the lazy dog

                    And I've traversed all the nastiness with Unicode's non-breaking spaces, and invisible breaks and all of that. I get this:

                    The quick
                    brown
                    fox jumped
                    over the
                    lazy dog

                    Look at the 2nd line. "Oh just remove the whitespace around the line" they said "It will be easy" they said "You can call char.IsWhitespace()" except wait. This isn't .NET. It's an IoT machine with C++ C++ doesn't do 32-bit codepoints out of the box. Do have any idea how hard it is to determine if a character is whitespace in Unicode? I need a massive table. *headdesk*

                    To err is human. Fortune favors the monsters.

                    P Offline
                    P Offline
                    PIEBALDconsult
                    wrote on last edited by
                    #19

                    For part of my UTF-8 decoder I use a sparse array, but of course I'm using C# so I can catch Index Exceptions. I guess I now have to add more characters to it though.

                    1 Reply Last reply
                    0
                    • T TheRealSteveJudge

                      No idea, but shouldn't it be "The quick brown fox jumps over the lazy dog"? :laugh:

                      M Offline
                      M Offline
                      megaadam
                      wrote on last edited by
                      #20

                      TheRealSteveJudge wrote:

                      jumps

                      I think you must've solved it!

                      "If we don't change direction, we'll end up where we're going"

                      T 1 Reply Last reply
                      0
                      • M megaadam

                        TheRealSteveJudge wrote:

                        jumps

                        I think you must've solved it!

                        "If we don't change direction, we'll end up where we're going"

                        T Offline
                        T Offline
                        TheRealSteveJudge
                        wrote on last edited by
                        #21

                        :laugh:

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