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cmuratori's profile
Casey Muratori
Casey Muratori
Casey Muratori
@cmuratori

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Casey Muratori

@cmuratori

I'm worried that the baby thinks people can't change.

Seattle
caseymuratori.com
Joined March 2009

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    Two-way (sending and receiving) short codes:

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    1. Darrell‏ @beached_whale Jul 20
      Replying to @cmuratori

      Most have two character codes, but other than " and maybe newline it's rarepic.twitter.com/jQwFT1XXGV

      1 reply 0 retweets 0 likes
    2. Lyle Jantzi III‏ @LyleJantzi Jul 20
      Replying to @beached_whale @cmuratori

      unicodes in json are 6 string characters. '\u007F'. If you do it Casey's way, it's two '\'+chr(0x7F).

      2 replies 0 retweets 0 likes
    3. Casey Muratori‏ @cmuratori Jul 20
      Replying to @LyleJantzi @beached_whale

      The problem is very simple. If you are handed a buffer and you need to know how much space the JSON encode will take, right now it's 6*size. If you fixed this, it would be 2*size. It is an important difference.

      1 reply 0 retweets 3 likes
    4. Darrell‏ @beached_whale Jul 20
      Replying to @cmuratori @LyleJantzi

      The strings being encoded, other than the ones in the image can be as is. utf8 with a codepoint >0x19 is all good

      2 replies 0 retweets 0 likes
    5. Casey Muratori‏ @cmuratori Jul 20
      Replying to @beached_whale @LyleJantzi

      This doesn't affect the problem at all. The maximum size before parsing is still 6*size, and always will be, because until you inspect the contents of the input, you don't know whether it will contain, for example, entirely 0x01's.

      3 replies 0 retweets 2 likes
    6. Darrell‏ @beached_whale Jul 20
      Replying to @cmuratori @LyleJantzi

      It would be interesting to see if counting and doing a single allocation would be fastests. On the parsing side it has shown to be the case. Luckily the string can be treated as hex and then it becomes a single allocation with O(1) size lookup * 2

      1 reply 0 retweets 0 likes
    7. Casey Muratori‏ @cmuratori Jul 20
      Replying to @beached_whale @LyleJantzi

      I have no idea what you're talking about. You cannot "treat" the string as anything in particular. You just have an input buffer of size n and you need to write the output into a JSON buffer, and that requires 6*n space in the worst case. Period. That is all there is to say?

      1 reply 0 retweets 1 like
    8. Darrell‏ @beached_whale Jul 20
      Replying to @cmuratori @LyleJantzi

      If both sides agree the string can be encoded as hex. This isn't uncommon for binary data as string in json. Doesnt work for dropbox though

      1 reply 0 retweets 0 likes
    9. Casey Muratori‏ @cmuratori Jul 20
      Replying to @beached_whale @LyleJantzi

      If both sides agree you don't have to send JSON! How is that helping?

      1 reply 0 retweets 2 likes
    10. Darrell‏ @beached_whale Jul 20
      Replying to @cmuratori @LyleJantzi

      Putting hex in a string is within the spec. Either way, yeah it’s bigger

      1 reply 0 retweets 0 likes
      Casey Muratori‏ @cmuratori Jul 20
      Replying to @beached_whale @LyleJantzi

      BUT IF BOTH SIDES AGREE YOU DO NOT NEED TO SEND JSON. YOU WOULD JUST SEND THE STRING AS A RAW BINARY AND IT IS 1X THE SIZE. At the risk of stating the obvious, nobody who cares about these things would ever send JSON to each other. You'd use a more efficient encoding.

      9:54 PM - 20 Jul 2021
      • 3 Likes
      • Ivan Braidi meglio Lyle Jantzi III
      1 reply 0 retweets 3 likes
        1. New conversation
        2. Casey Muratori‏ @cmuratori Jul 20
          Replying to @cmuratori @beached_whale @LyleJantzi

          This discussion is about JSON, the format, as is necessary to use to send strings to things like web services, which you do not control. Which is the point of the JSON spec, and my complaint.

          1 reply 0 retweets 2 likes
        3. Darrell‏ @beached_whale Jul 20
          Replying to @cmuratori @LyleJantzi

          It isn't JSON issue. It's trying to encode within the limitations of a HTTP URL. JSON doesn't care as long as your code point is >0x19. It offers a mechanism, I agree that is 6x because Javascript did it that way, but generally it's not a problem. Here is it

          1 reply 0 retweets 0 likes
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