Viewing profile — harryposner
harryposner
HN member- Joined
- Wed, Feb 20, 2019, 6:18 PM UTC
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- 66
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- 24 items
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About harryposner
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Recent public activity
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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…
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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:/…
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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…
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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…
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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…
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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-…
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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…
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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…
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Comment #26503131
user=> (rest '(3 . 4)) (. 4) user=> (second '(3 . 4)) . user=> (nth '(3 . 4) 2) 4
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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…
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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.
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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:/…
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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…
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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…
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Comment #24697894
A Nobel Prize is about a million dollars cash.
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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…
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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.
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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…
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Comment #20009389
For comparison, the relevant excerpt from the Iliad (Fagles translation): https://home.ubalt.edu/ntygfit/ai_01_pursuing_fame/ai_01_tel...
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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…
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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
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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…