pjungwir

36 ms·

1. 241.▲
   by pjungwir 8y ago

   There's this application I've been writing and re-writing my whole career: I call it "some users design forms, other users fill out forms." It is hard to design the db as anything other than EAV. (You can push more or le
2. 242.▲
   by pjungwir 8y ago

   Oh, running databases on instance storage is one of my favorite topics! :-) Here is the start of a chain of comments where you'll find some interesting ideas and alternatives: https://news.ycombinator.com/item?id=170987
3. 243.▲
   by pjungwir 8y ago

   This rant seems out of character, but personally I appreciate it. People are always suggesting getting rid of cron, but I have always liked and trusted it. I prefer using tools that are old, battle-tested, and standard, but I do try to appr
4. 244.▲
   by pjungwir 8y ago

   Ugh, I'm very sorry to have wasted your time! I mostly work on Linux, but I tried it out on OS X and got the same results as you. It looks to me like OS X will only search for sections named 1-9 (and maybe "n" too). The MANSE
5. 245.▲
   by pjungwir 8y ago

   um is a brilliant name. If you don't want to install anything new, you can also write your own man pages with a personal "man section". Just do something like this in your shell: export MANPATH="$MANPATH:$HOME&#x2F
6. 246.▲
   by pjungwir 8y ago

   Wow, funny to see this here. I'm halfway through Exploding the Phone by Phil Lapsley, a history of phone phreaking, and the Bell System Technical Journal plays an important role, as you said!
7. 247.▲
   by pjungwir 8y ago

   https://illuminatedcomputing.com/
8. 248.▲
   by pjungwir 8y ago

   SEEKING WORK - Portland, OR or Remote I'm a full-stack developer with 17 years experience. My specialties are Rails, Postgres and Chef/AWS. I'm also very comfortable in Angular, Vue, React, Java, and Python. At the low level
9. 249.▲
   by pjungwir 8y ago

   Just wanted to say I really appreciated this answer and it does let me see the book in a new light. It's interesting how many of the others I listed are not in that kind of competitive environment!
10. 250.▲
    by pjungwir 8y ago

    Thanks! I'll rethink SotNM some in light of that. I did enjoy the parts about "signing up" and the software/hardware interaction (although I wished for more technical details about that.) I didn't think it was bad
11. 251.▲
    by pjungwir 8y ago

    Can someone tell me what is so great about SotNM? (It even won a Pulitzer.) I read a bunch of computer history books last year, and these were all more interesting IMO: - John Gernter, The Idea Factory - T.R. Reid, The Chip - Stephen Levy,
12. 252.▲
    by pjungwir 8y ago

    It's pretty cool to see this article mention Polanyi, who is very pertinent I think. Yes, he wrote about tacit knowledge as something not formalizable. But it's not just that. His goal was to protect scientists' freedom from
13. 253.▲
    by pjungwir 8y ago

    Okay. I've read that in a few places, but never anything that seemed quite clear and authoritative enough to really trust it. For instance Google's docs [1] say: In addition to the $200 monthly free credit, all users get:
14. 254.▲
    by pjungwir 8y ago

    I have a native Android app I need to update before Thanksgiving. Right now the map uses Google Play Services. I've done fairly deep OpenStreetMap projects on several websites, but with Android I'm afraid what it will mean to find
15. 255.▲
    by pjungwir 8y ago

    I have always wondered why there is a transition between violet and red, if they are on opposite ends of the frequency spectrum. Despite that, they don't act like two extremes, just two positions on a "wheel". Why is color so
16. 256.▲
    by pjungwir 8y ago

    SEEKING WORK - Portland, OR or Remote I'm a full-stack developer with 17 years experience. My specialties are Rails, Postgres and Chef/AWS. I'm also very comfortable in Angular, Vue, React, Java, and Python. At the low level
17. 257.▲
    by pjungwir 8y ago

    Thank you for sharing all these emails! For anyone else, Alan Kay is one of the most creative and interesting of the early computer pioneers. He was a major figure at Xerox PARC, and if you want to read more, a lot of that story is covered
18. 258.▲
    by pjungwir 8y ago

    Does anyone here remember ZZT? I loved building puzzles in that game with the scripting language. You didn't program to play, but you could make your own games and program the behavior of special objects. It's the closest realized
19. 259.▲
    by pjungwir 8y ago

    > Inefficient Rendering (IR). This one was a surprise to me He's talking about the common Rails pattern of rendering a small Haml/ERB partial over & over in a loop. I've noticed big perf hits from this before, but neve
20. 260.▲
    by pjungwir 8y ago

    If you are using Rails, this is a nice guardrail: https://github.com/ankane/strong_migrations Even if you aren't on Rails or don't want to use the gem, it is still nice a checklist.
21. 261.▲
    by pjungwir 8y ago

    A high school friend told me the same thing around 1993-1995: you have to shuffle it seven times. He said he read it in Wired magazine. I've tried to find the article a few times since, but never been successful.
22. 262.▲
    by pjungwir 8y ago

    I learned of this issue recently when someone corrected me on StackOverflow about using ActiveRecord::Base.connection.execute, which leaks memory, and pointed me to exec_query instead.[1] Here that behavior is why ActiveRecord can't la
23. 263.▲
    Ruby's external malloc problem(samsaffron.com)

    2 points by pjungwir 8y ago|1 comments
24. 264.▲
    by pjungwir 8y ago

    It reminds me of a critique of threads in The Art of Unix Programming (available at http://www.catb.org/esr/writings/taoup/html/ch07s03.html#id2... ). And now that I look it up, it actually cites the Ou
25. 265.▲
    by pjungwir 8y ago

    I've built things with pthreads a few times, and also used threading in Java, Rust, Python, and Ruby. (Edit: C# and Perl too IIRC. :-) The best book I've read about using threading safely was the O'Reilly Java Threads book.
26. 266.▲
    by pjungwir 8y ago

    This really only started after 9/11 when airlines started charging for your first checked bag. Before that most people brought smaller carry-ons and checked more. (Why lug all your stuff around if you don't have to?) But now lots
27. 267.▲
    by pjungwir 8y ago

    I've noticed that ntile(n) can give unexpected results when there are fewer input rows than n, so cume_dist might be a safer choice (or percentile_disc or percentile_cont). I wrote some more details here: https://stackoverfl
28. 268.▲
    by pjungwir 8y ago

    That is great to hear! I'd love to read the details if you happen to have a link to more information. I've tried Googling for it a few times over the years but never found anything.
29. 269.▲
    by pjungwir 8y ago

    Congratulations Ruby team! I'm excited to hear about the performance improvements. It seems like JIT could be a huge win since calling a method requires checking all kinds of possibilities that are almost always not used, but might be.
30. 270.▲
    by pjungwir 8y ago

    SEEKING WORK - Portland, OR or Remote I'm a polyglot, full-stack developer with 17 years experience. My specialties are Rails, Postgres and Chef/AWS. I've done several Postgres C extensions for performance and scalability, an