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marcan42's profile
Hector Martin
Hector Martin
Hector Martin
@marcan42

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Hector Martin

@marcan42

If it ain't broke, I'll fix it! I'm porting Linux to Apple Silicon Macs at @AsahiLinux. http://patreon.com/marcan  | http://github.com/sponsors/marcan 

Tokyo, Japan
marcan.st
Joined May 2009

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    2. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 18 Jun 2018
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      Replying to @scanlime

      really? I drastically prefer bytearray. In all fairness my experience with JS dev is limited to exploitation of webkit, meaning I'm probably playing with the absolute nastiest of edge cases, but like... I really like python a lot more? It feels cleaner to me in a lot of ways

      1 reply 0 retweets 2 likes
    3. hedge.txt | Mostly Inactive, except when not‏ @hedgeberg 18 Jun 2018
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      Replying to @hedgeberg @scanlime

      of course, I'm not exactly a huge python or js dev so my opinion is kinda moot on this, I use js for bad things and python for gross terribly structured scripts and I prefer to write everything in regular C so if anything I'm Objectively Wrong (tm)

      1 reply 0 retweets 1 like
    4. Hector Martin‏ @marcan42 19 Jun 2018
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      Replying to @hedgeberg @scanlime

      Eh, I agree, Python is a much better thought-out language, especially since they (after all these years) managed to pull off a backwards-compat breaking release (Py3) while JS is stuck with all of its warts forever. UTF-16, really? No integer types? sort() sorts in string order?

      2 replies 0 retweets 4 likes
    5. Hector Martin‏ @marcan42 19 Jun 2018
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      Replying to @marcan42 @hedgeberg @scanlime

      The one thing JS has going for it is it's huge since it happens to be the language of the web, which means lots of time goes into optimizing the hell out of it, which means these days it's fast (but only thanks to ridiculously complex, massive, incomprehensible JIT engines).

      1 reply 0 retweets 2 likes
    6. Hector Martin‏ @marcan42 19 Jun 2018
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      Replying to @marcan42 @hedgeberg @scanlime

      But, like, that happened *despite* JS being a terrible language. It's a consequence of its popularity; JS isn't popular because it's a good language, it's popular because it happened to wind up being *the* language of the web (and people are trying to use it for other things).

      3 replies 0 retweets 3 likes
    7. Hector Martin‏ @marcan42 19 Jun 2018
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      Replying to @marcan42 @hedgeberg @scanlime

      I don't do node.js but I've had to deal with node.js codebases and I cannot for the life of me fathom writing any of the stuff I do in Python in JS. Just no. Please. I write JS for web stuff and for that it's tolerable, but I'd prefer Python if I had the choice.

      1 reply 0 retweets 3 likes
      Hector Martin‏ @marcan42 19 Jun 2018
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      Replying to @marcan42 @hedgeberg @scanlime

      Hector Martin Retweeted Hector Martin

      Also I just stumbled upon this one, and, seriously, I don't even. Who comes up with this stuff?https://twitter.com/marcan42/status/1008999468492918784 …

      Hector Martin added,

      Hector Martin @marcan42
      Yet another JS WTF. JS uses 64-bit floats for numbers, but it *lies* when displaying them. 0x4000000000000000 is 4611686018427387904 and is *perfectly* represented as a float. But JS renders it as 4611686018427388000, because that has fewer significant digits in decimal?! pic.twitter.com/xbYbqMP9mY
      Show this thread
      2:14 AM - 19 Jun 2018
      2 replies 0 retweets 0 likes
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        1. -1‏ @einsweniger 19 Jun 2018
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          Replying to @marcan42 @hedgeberg @scanlime

          node had a problem with addressing NTFS correctly because JS Numbers lost integer precision :D https://github.com/nodejs/node/issues/12115 …

          1 reply 0 retweets 1 like
        2. Hector Martin‏ @marcan42 19 Jun 2018
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          Replying to @einsweniger @hedgeberg @scanlime

          NTFS isn't the only filesystem with 64-bit inodes. XFS too. Not the first time people get bit by JS's lack of real integers.

          0 replies 0 retweets 0 likes
          3. End of conversation
        2. New conversation
        1. kentaromiura―クリスティアン‏ @kentaromiura 19 Jun 2018
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          Replying to @marcan42 @hedgeberg @scanlime

          Js follows IEEE 754, quite sure that's expected behaviour

          1 reply 0 retweets 0 likes
        2. Hector Martin‏ @marcan42 19 Jun 2018
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          Replying to @kentaromiura @hedgeberg @scanlime

          Hector Martin Retweeted Hector Martin

          Nope, it doesn't. This is *specified* in IEEE 754. JS is violating the spec.https://twitter.com/marcan42/status/1009008156322623489 …

          Hector Martin added,

          Hector Martin @marcan42
          Here's the IEEE 754 spec explicitly saying conversions to integer must use the exact integer when the value is representable in both formats. JS is violating the IEEE 754 standard. Please don't make excuses about different representations for the same float. This is *broken*. pic.twitter.com/pUEdUCxGEd
          Show this thread
          2 replies 0 retweets 1 like
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