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harryposner

HN member
Joined
Wed, Feb 20, 2019, 6:18 PM UTC
HN karma
66
Public activity
24 items

About harryposner

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Recent public activity

  1. comment
    Comment #48533060

    Clojure has two options: The version with a threading macro, will create a lazy-sequence for each step in the pipeline. It will not instantiate the entire list, so it's O(1) memory…

  2. comment
    Comment #39316088

    > This would imply that you can jump into the same stack frame multiple times, or do other weird things. Yep— this is how you can implement the `amb` operator with call/cc: https:/…

  3. comment
    Comment #39316024

    So the particular example here isn’t too different from exceptions. You’re unwinding the stack up to a predefined point— here, the callsite of foo, where with exceptions it would b…

  4. comment
    Comment #36947144

    You joke, and yet [Lucas 1988] uses an amusement park as a toy model to demonstrate how monetary shocks can affect real economic activity. The key difference between this and Chuck…

  5. comment
    Comment #34120244

    They do not exclude gas prices. The Consumer Price Index, which is what most people pay attention to and to which this article refers, currently weights gasoline at 3.7% of the bas…

  6. comment
    Comment #33152812

    > But I haven't had a need to add any kind of plugin, and it's easy enough to fork a shell for an external process if needed. For me, coming from writing Clojure with Neovim + vim-…

  7. comment
    Comment #29634046

    From the beginning of SICP [0]: > A powerful programming language is more than just a means for instructing a computer to perform tasks. The language also serves as a framework wit…

  8. comment
    Comment #28458963

    I’m not familiar with Erlang, but unless it has some really funky syntactic sugar, the Erlang examples aren’t tail-recursive. In all three, the continuation of the recursive call i…

  9. comment
    Comment #26503131

    user=> (rest '(3 . 4)) (. 4) user=> (second '(3 . 4)) . user=> (nth '(3 . 4) 2) 4

  10. comment
    Comment #26485647

    An ascending price auction is strategically different from a second price auction when the bidders each have a noisy estimate of some underlying true value. With a second price auc…

  11. comment
    Comment #26168140

    I didn’t read it as firing old people, but rather firing people for the plain old reason that they’re not doing a good job.

  12. comment
    Comment #25764192

    > there's no, say, "fivefold repetition" draw that could be enforced despite the players' will There is exactly such a rule. See the FIDE Laws of Chess [0], rule 9.6.1. [0] https:/…

  13. comment
    Comment #25320973

    Pandas does have the .pipe() method [0], which allows you to put an arbitrary callable in a method chain, but it is a bit more cumbersome than in R. [0] https://pandas.pydata.org/p…

  14. comment
    Comment #25254760

    Lichess’s cheat detection is open source (like everything else on the site) [0]. The training dataset isn’t public, though, and it’s practically undocumented. If you look in the `m…

  15. comment
    Comment #24697894

    A Nobel Prize is about a million dollars cash.

  16. comment
    Comment #23452803

    My favorite part of the paper that used field experiments to demonstrate that rice in Hunan is a Giffen good for the poorest consumers [0] is the cheeky inclusion of this quote fro…

  17. comment
    Comment #21736531

    A slight correction: C-x C-e and fc open $EDITOR, which is vim by default on most machines. You can change it to anything, though.

  18. comment
    Comment #21165990

    I don't think he's right that you could implement a bagel mode on that toaster by just running the center heating element. Both heating elements are necessary for the toaster to fu…

  19. comment
  20. comment
    Comment #20009389

    For comparison, the relevant excerpt from the Iliad (Fagles translation): https://home.ubalt.edu/ntygfit/ai_01_pursuing_fame/ai_01_tel...

  21. comment
  22. comment
    Comment #19771372

    > In Russian, the verb that means discover or recognize also contains the verb to know. The English very nearly does as well. The "gn" in "recognize" has the same etymological root…

  23. comment
    Comment #19562934

    I've used Ghostscript to shrink scanned PDFs for emailing, although I don't know how lossy the compression is. [0] https://askubuntu.com/a/256449

  24. comment
    Comment #19341099

    Prisoners aren't counted at all---not even as "not in the labor force" [0]. The employment statistics are based on the civilian non-institutional population, and prisoners are inst…