Skip to content
  • Categories
  • Recent
  • Tags
  • Popular
  • World
  • Users
  • Groups
Skins
  • Light
  • Cerulean
  • Cosmo
  • Flatly
  • Journal
  • Litera
  • Lumen
  • Lux
  • Materia
  • Minty
  • Morph
  • Pulse
  • Sandstone
  • Simplex
  • Sketchy
  • Spacelab
  • United
  • Yeti
  • Zephyr
  • Dark
  • Cyborg
  • Darkly
  • Quartz
  • Slate
  • Solar
  • Superhero
  • Vapor
  • Default (No Skin)
  • No Skin
Collapse
Code Project
CODE PROJECT For Those Who Code
  • Home
  • Articles
  • FAQ
Community
  1. Home
  2. The Lounge
  3. Technically correct but practically useless

Technically correct but practically useless

Scheduled Pinned Locked Moved The Lounge
csharpc++iotquestion
21 Posts 9 Posters 2 Views 1 Watching
  • Oldest to Newest
  • Newest to Oldest
  • Most Votes
Reply
  • Reply as topic
Log in to reply
This topic has been deleted. Only users with topic management privileges can see it.
  • CPalliniC CPallini

    I guess the table is in the Remarks section of Char.IsWhiteSpace Method (System) | Microsoft Docs[^].

    "In testa che avete, Signor di Ceprano?" -- Rigoletto

    L Offline
    L Offline
    Lost User
    wrote on last edited by
    #6

    I was looking at the table over at Unicode.org[^]

    CPalliniC 1 Reply Last reply
    0
    • L Lost User

      I was looking at the table over at Unicode.org[^]

      CPalliniC Offline
      CPalliniC Offline
      CPallini
      wrote on last edited by
      #7

      I guess they match. :-)

      "In testa che avete, Signor di Ceprano?" -- Rigoletto

      In testa che avete, signor di Ceprano?

      1 Reply Last reply
      0
      • Richard DeemingR Richard Deeming

        Does the OS you're using not have ICU[^] support built-in?

        "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

        CPalliniC Offline
        CPalliniC Offline
        CPallini
        wrote on last edited by
        #8

        Many IoT devices, don't have an OS.

        "In testa che avete, Signor di Ceprano?" -- Rigoletto

        In testa che avete, signor di Ceprano?

        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.

          B Offline
          B Offline
          BorkenkaeferFrisstFichten
          wrote on last edited by
          #9

          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 1 Reply Last reply
          0
          • Richard DeemingR Richard Deeming

            Does the OS you're using not have ICU[^] support built-in?

            "These people looked deep within my soul and assigned me a number based on the order in which I joined." - Homer

            honey the codewitchH Offline
            honey the codewitchH Offline
            honey the codewitch
            wrote on last edited by
            #10

            What OS? FreeRTOS? No. And it wouldn't know what to do with truetype anyway. It has no concept of graphics

            To err is human. Fortune favors the monsters.

            1 Reply Last reply
            0
            • 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.

              1 Reply Last reply
              0
              • 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.

                1 Reply Last reply
                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
                          0
                          • 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:

                                  1 Reply Last reply
                                  0
                                  Reply
                                  • Reply as topic
                                  Log in to reply
                                  • Oldest to Newest
                                  • Newest to Oldest
                                  • Most Votes

                                  • Login
                                  • Don't have an account? Register
                                  • Login or register to search.
                                  • First post
                                    Last post
                                  0
                                  • Categories
                                  • Recent
                                  • Tags
                                  • Popular
                                  • World
                                  • Users
                                  • Groups