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xavxav

HN member
Joined
Sun, Feb 12, 2012, 2:23 AM UTC
HN karma
1,035
Public activity
230 items

About xavxav

www.xav.io

Recent public activity

  1. comment
    Comment #47453530

    search trees tend not to scale well to higher dimensions though, right? from what I've seen I had the impression that Yinyang k-means was the best way to take advantage of the spar…

  2. story
  3. comment
    Comment #46050479

    aren't rockets like the starship almost the opposite of what you want in a space station? They want to minimize the integrity of the rocket as much as possible (without blowing up)…

  4. comment
    Comment #46032093

    you just need to speed up in the opposite direction by flipping around and firing bombs on the other side.

  5. comment
    Comment #45667210

    garage devs have told me of 10PiB+ deployments in production, but I've never operated one at that scale so I can't share much insight into the experience. Probably best to ask on t…

  6. comment
    Comment #45286907

    I'm surprised GDPR has nothing to say about this. You should have the right to your data, but I suppose that doesn't extend to companies?

  7. comment
    Comment #43631930

    That's unfortunate, I really preferred Whisky to crossover purely for the UX, I would happily pay for a crossover license if i got to keep the whisky app itself, crossover's ui is …

  8. comment
    Comment #43393744

    basically every european country? they've all had much larger datacaps than north america for years preceding 5g and most are quite densely inhabited.

  9. comment
    Comment #41728998

    Sure, scopes are not as easily syntactically visible, but each assignment is creating a new scope, that doesn't change anything for equational reasoning which has to account for ca…

  10. comment
    Comment #41719807

    What do you mean? let-bindings don't interfere with referential transparency. `let x = 1 in let x = 2 in foo` is referentially transparent.

  11. comment
    Comment #41674019

    > * "As provable as Ada/SPARK": I'll let you read the design in [2] and decide for yourself. But Yao will also have contracts. Without being too self-indulgent, I'm not sure there …

  12. comment
    Comment #41443352

    Not really, conceptually it probably shares a lot of the same foundations that a useful simulator would have, but its important to keep in mind that they aren't actually simulators…

  13. comment
    Comment #41216441

    1. the article explains how many materials could potentially be sourced on the moon and provides potential magnet compositions to address that as well. 2. The moon weighs ~8.1 x 10…

  14. comment
    Comment #41216414

    It's only ~400 times the circumference of the LHC so that seems like a pretty good increase.

  15. comment
    Comment #40994723

    There is still academic work on Prolog, and more broadly deductive / logic programming. If you are looking at things with a more industrial bent, I would look to Datalog which trad…

  16. comment
    Comment #40934796

    I did the same thing, with the same limitations for years, but I've transitioned to using the tiny package `DailyOrganizer` which can create a note for each day, along with a small…

  17. comment
    Comment #40774097

    I'm a researcher in formal verification; my thesis was building a tool to do this kind of stuff and I agree with the grandparent (though I would say probably closer to 5-10x slowdo…

  18. comment
    Comment #40577019

    > After decades of compiler research and super compilers chugging away, we're sort of at a point where discovering novel optimizations with results that are more than a smidge of i…

  19. comment
    Comment #40576978

    Indeed, the first incompleteness theorem tells us that any logical framework which can express Peano arithmetic must necessarily contain true (resp. false) facts for which no (resp…

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  21. comment
    Comment #40417353

    hey! I'm the author of Creusot, happy to answer any questions.

  22. comment
    Comment #40398796

    I would assume its not 'safety critical' but 'business critical', disabling GPS would mean slowing down departures / arrivals which means the airport losing money. I recall there b…

  23. comment
    Comment #40388130

    > I guess that immutable Rust is simpler to verify with the other systems too. I don't think that's the case (it's not harder either). The type system of Rust makes handling mutabi…

  24. comment
    Comment #40377330

    > Could you sketch in a few bullet point what you think is missing and how to fix the gaps? Not yet, I am planning on writing some blog posts about it but there are still enough fu…

  25. comment
    Comment #40376282

    > You can knock off most things you have to prove with a SAT solver. But you'll need something heavier for the hard problems. Coq is too manual. The author thinks ACL2 is too funct…