Every V4 UUID • Hacker News Board

Re: Every V4 UUID

#361

Post by devoutsalsa » Sat, Dec 07, 2024, 7:25 PM UTC

Every social security number!

    (0..999999999).
      map { |i| i.to_s.rjust(9, "0") }.
      map { |i| i[0..2] + "-" + i[3..4] + "-" + i[5..9] }

Re: Every V4 UUID

#362

Post by therealdrag0 » Sat, Dec 07, 2024, 8:22 PM UTC

empty_space wrote: post #133

I spent far too much time being childish with this, but I am quite pleased that: 69420694-2069-4206-9420-694206942069 is a valid UUID.

My inner middle schooler is also satisfied

B00B1E5f-7117-4a61-816d-92710147f63f

Re: Every V4 UUID

#363

Post by greggyb » Sat, Dec 07, 2024, 8:55 PM UTC

cbsks wrote: post #331

greggyb wrote: post #203

Earlier quoted context omitted.

I had a database of all SSNs for a while, but it was on a work laptop, so I didn't get to keep it.

Here you go; every SSN: https://github.com/panzertime/every_ssn

Thanks. Now I can always double check mine!

Re: Every V4 UUID

#364

Post by TZubiri » Sat, Dec 07, 2024, 9:11 PM UTC

cbsks wrote: post #331

greggyb wrote: post #203

Earlier quoted context omitted.

I had a database of all SSNs for a while, but it was on a work laptop, so I didn't get to keep it.

Here you go; every SSN: https://github.com/panzertime/every_ssn

It's missing names and addresses and credit scores and emails and phones

Re: Every V4 UUID

#365

Post by aftbit » Sat, Dec 07, 2024, 9:18 PM UTC

>Maybe this is silly to you. But framing the problem as “come up with a function that looks like it adds entropy but is reversible” was a lot easier for me to think about than “preserve bijectivity between these two sets.

IMO that's half of "real work" - figuring out how to think about a problem. Insights are funny that way - stuff that is obvious to one person is game-changing to others.

Re: Every V4 UUID

#366

Post by wild_pointer » Sat, Dec 07, 2024, 9:49 PM UTC

I starred my UUID of choice. Now I can't find it. Help, I've been scrolling for three days.

Re: Every V4 UUID

#367

Post by dhosek » Sat, Dec 07, 2024, 10:34 PM UTC

js2 wrote: post #239

lxgr wrote: post #234

Earlier quoted context omitted.

The best part is that that kind of trick usually becomes more, rather than less, impressive when its inner working is revealed. I recently got to see them perform live, and my favorite trick by far was one of that kind.

Penn only agreed to the "Red Ball" trick after Teller hit on the idea to tell the audience how it works at the start. https://lasvegasweekly.com/news/2008/nov/20/man-ball-hoop-be... https://www.thisamericanlife.org/619/transcript https://www.youtube.com/watch?v=dhnATlPdG6A Here they are showing how they do ball & cups by using clear cups and it's no less amazing: https://www.youtube.com/watch?v=8osRaFTtgHo

I love these and my kids who are a little obsessed with stage magic right now are at the perfect age for Penn & Teller videos so I need to stash these for the next time I have them. There’s definitely skill levels involved, even at the professional level (and Penn & Teller are definitely among the best out there). We’ve been to two professional magic shows in the last year, one in Wisconsin Dells, the other in Lake Geneva (both venues starring their owners) and it was apparent that the Dells guy was much better than the Lake Geneva guy (although the second magician the Lake Geneva guy had some impressive work to show).

Re: Every V4 UUID

#368

Post by lelandfe » Sat, Dec 07, 2024, 11:52 PM UTC

bspammer wrote: post #353

lelandfe wrote: post #223

Earlier quoted context omitted.

I was going to "see also also" you with https://libraryofbabel.info/ but RIP for it is dead. https://en.wikipedia.org/wiki/The_Library_of_Babel_(website)

Wow I hope that's temporary - I looked at the site less than a month ago and it was still up.

Emailed the creator

Re: Every V4 UUID

#369

Post by cbsks » Sun, Dec 08, 2024, 12:09 AM UTC

TZubiri wrote: post #364

cbsks wrote: post #331

Earlier quoted context omitted.

Here you go; every SSN: https://github.com/panzertime/every_ssn

It's missing names and addresses and credit scores and emails and phones

Feel free to open a pull request!

Re: Every V4 UUID

#370

Post by r3db34rd » Sun, Dec 08, 2024, 2:13 AM UTC

eieio wrote: post #69

tobyjsullivan wrote: post #21

The fact that the search works impressed me more than anything. Of course, like every great magic trick, it seems so simple once it is explained. For the curious, here's the linked blog post describing how the project works: https://eieio.games/blog/writing-down-every-uuid/ Edit to add: I'd only tried searching for an exact UUID when I wrote this comment. I didn't realize it supports full text search! Now I'm even mo…

I'm really happy that the trick was magical to you - I was so surprised and delighted when I realized that this was possible, and I wasn't really sure if anyone else would feel the same way! And of course, I'm proud to be providing so much utility here - finally we can find and use UUIDs tailor-fit to our needs

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