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qntm's profile
quarantine 'em
quarantine 'em
quarantine 'em
@qntm

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quarantine 'em

@qntm

I created the Antimemetics Division. http://scp-wiki.wikidot.com/antimemetics-division-hub …

qntm.org
Joined September 2009

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    1. quarantine 'em‏ @qntm Feb 29
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      quarantine 'em Retweeted Jordan Scales

      Challenge: what's the smallest positive integer for which this doesn't workhttps://twitter.com/jdan/status/1232738079921856512 …

      quarantine 'em added,

      Jordan Scales @jdan
      TIL in #javacript you can specify more than one digit for a number i.e. let x = 12345; instead of let x = [1, 2, 3, 4, 5].reduce((a,b)=>a*(9+1)+b); This is going to clean up my code so much! 🤯 RT!
      Show this thread
      2 replies 3 retweets 13 likes
    2. Igor‏ @sigbrutal Feb 29
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      Replying to @qntm

      9007199254740993 == 2**53+1

      1 reply 0 retweets 1 like
    3. quarantine 'em‏ @qntm Feb 29
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      Replying to @sigbrutal

      So, I would argue that the two expressions 9007199254740993 [9, 0, 0, 7, 1, 9, 9, 2, 5, 4, 7, 4, 0, 9, 9, 3].reduce((a, b) => a * (9 + 1) + b) in fact evaluate to identical values

      1 reply 0 retweets 0 likes
    4. Igor‏ @sigbrutal Feb 29
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      Replying to @qntm

      In which case it's 18014398509481993 == 2**54 + 9, which evaluates to 18014398509481990 normally and [1, 8, 0, 1, 4, 3, 9, 8, 5, 0, 9, 4, 8, 1, 9, 9, 3].reduce((a,b)=>a*(9+1)+b) evaluates to 18014398509481996

      1 reply 0 retweets 3 likes
    5. Igor‏ @sigbrutal Feb 29
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      Replying to @sigbrutal @qntm

      also, the answer may or may not depend on the browser, the above is in Chrome 80.0

      1 reply 0 retweets 0 likes
      quarantine 'em‏ @qntm Feb 29
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      Replying to @sigbrutal

      Excellent work! I doubt it's browser-dependent, this is a function of IEEE 754 floating point behaviour, which is far lower-level than the JavaScript engine

      7:29 AM - 29 Feb 2020
      0 replies 0 retweets 0 likes

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