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jerry40

64 karma · joined September 2, 2015

https://github.com/jerry40
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jerry40··on Show HN: Quantra.io, a quantitative finance API made with Quantlib
I can imagine people or companies can use this API to check their own functions in test cases. Example - you have tons of deals and at the end of the day it would be interesting to doublecheck daily P&L. But I believe this business doesn't trust anybody but well-known players or experts. Also the time is essential so they will prefer a local library. And again, the security can prohibit external APIs. I don't discourage your work though, perhaps it is a step to your personal success, who knows.
jerry40··on The best defense against malicious AI is AI
A name of the topic reminds me "Watchbird" novel written by Sheckley
jerry40··on The Weird Signal
Interestingly, we've surrounded our planet by sputniks which were invented as a step to the stars but sometimes they make our interstellar eyesight less sharp.
jerry40··on 19th-Century Lithuanians Who Smuggled Books to Save Their Language
I'm just curious who was an EU predecessor
jerry40··on 19th-Century Lithuanians Who Smuggled Books to Save Their Language
I grew up in a little republic which is smaller than Tatar Republic and we hadn't problems with the national literature. Of course it wasn't so rich, I've never managed to find Ulysses in that language. I have an impression that when Moscow sent plans like "to rise X new writers and to print out Y new books in the ______ language" , local party members were catching people on the streets to create new republican poets of them.
jerry40··on 19th-Century Lithuanians Who Smuggled Books to Save Their Language
Not sure why you blame USSR in this topic, as far as I know, it supported regional languages and printed many books, newspapers and magazines in the languages of its republics. I bet that books at that period were much cheaper than they're now.
jerry40··on Radiohead album hides an app that only runs on an '80s computer
It reminded me a strage fate of Syd Barrett...
jerry40··on Countdown to timestamp 1,500M
Which means we're not getting younger
jerry40··on Blood from young animals can revitalise old ones
So blood of young people will be a real currency of future? Bloodcoin?

PS OMG, I googled and discovered that bloodcoin already exists.

jerry40··on ZFS Is the Best Filesystem For Now
Thanks, very interesting.
jerry40··on ZFS Is the Best Filesystem For Now
Interesting. I played with ZFS years ago on opensolaris, I don't remember there were atomic snapshots. I definitely need to dive into ZFS again.
jerry40··on ZFS Is the Best Filesystem For Now
But if we "stop" this database/schema, make ZFS snapshot (I suggest that the "partition" keeps only this database related files) it may work. It can be useful for testing purposes I guess.
jerry40··on ZFS Is the Best Filesystem For Now
Does anybody use ZFS as replacement for a database backup/restore on a test environment? I'm not sure but it seems that it's possible to use ZFS snapshots in order to quickly restore previous database state. Note: it's just a question, I'm not advising to try that.
jerry40··on 5800sq km iceberg breaks off Antarctica's Larsen C ice shelf
It must be my poor English. I've never said that bikes are bad for environment.
jerry40··on 5800sq km iceberg breaks off Antarctica's Larsen C ice shelf
This explains late summer in european part of Russia this year. Another couple of persons like you will freeze us to death. Can you at least ride a bike more frequently? :)
jerry40··on Indian IT, “You're Fired”
Such a sad story! Somehow it reminded me a mix of 1984 and Brazil.
jerry40··on Indian IT, “You're Fired”
It is too expensive... Just kiddnig. They paid fired people compensation for 2 months though.
jerry40··on Indian IT, “You're Fired”
>Immediately escorting fired employees out of the building is an extremely aggressive signal, and I don't know if it gets used much outside of USA.

I saw that in Moscow in 2008 (one big investment bank fired several guys from our team in 20-30 minutes in front of my eyes). It was very unusual. They did now allow a fired person to touch his computer after firing him.

jerry40··on Ask HN: What good alteratives are there to Google News?
I migrated to The Old Reader (https://theoldreader.com). I even tried to wirte the emacs mode for it (just for education), but didn't manage to finish it yet (https://github.com/jerry40/the-old-mode).
jerry40··on Ask HN: Which sites you visit on a regular basis for knowledge and inspiration?
Oh come on, I answered a question about the site I visit every day and got all this.
jerry40··on Index Search Algorithms for Databases and Modern CPUs (2010) [pdf]
Looks like the algorithm 2.1 has a flaw: after low becomes equal to high , we need to take keys[low] and vals[low] instead of midKey and vals[mid] in last "IF", in other case midKey / mid may remain not actual and the function can return nil.

I put it coded in golang there https://play.golang.org/p/hXdA0CY755

PS I like the article - I've never realized that such low level thing as L1/L2 cache are so important for query optimization!

jerry40··on Ask HN: Which sites you visit on a regular basis for knowledge and inspiration?
Yes, I know, it is the url of the "Hacker News" logo, so I've just copied it.
jerry40··on Ask HN: Which sites you visit on a regular basis for knowledge and inspiration?
https://news.ycombinator.com/news
jerry40··on Luna – Visual and textual functional programming language
Luna is moon in Russian as well (stress is on the second syllable though)
jerry40··on The Artful Propaganda of Soviet Children’s Literature
It was a war, wasn't it? Millions and millions have died, we just can't imagine what was happening at that horrible period. Now it is very easy to say "I would never do THAT!", but who knows.
jerry40··on The dark legacy of Carlos Castaneda (2007)
Yes, a rule of thumb is to remember to look at your hands in a dream. You even may look at them in reality (or "reality") to get a habit. After you look at hands in a dream you remember that you in a dream. Next difficult thing is to be able not to ruin a dream and to try to explore it. I constantly tried to go through walls in my room or to fly - no success :) Also it is possible to keep attention at the period when you're go from reality to a dream. It feels like your body made of a stone and you can't move and then you're in a dream.
jerry40··on The dark legacy of Carlos Castaneda (2007)
On the other hand if you knew that everything is in fact the illusion, why would you need money and girls? And is there an evidence that other people are real, or are they just parts of the illusion? To write a search engine in the illusion - is there more strange thing? :)
jerry40··on The dark legacy of Carlos Castaneda (2007)
At least his lucid dreams techniques are not that difficult to reproduce. I stopped them many years ago after I had strange experience of waking up for several times in a row. I woke up, went to a next room and, all of a sudden, I realised that it was still a dream. After short panic I woked up again only to repeat the story. And so on, actually I'm not sure if I've really woked up that day or I'm still in that dream and once I'll discover myself opening eyes there again.
jerry40··on CUDA and CuBLAS GPU Matrices in Clojure
Several years ago I took CUDA course on Udacity and I thought how interesting it would be to write the same exercises in Lisp. Now this is possible, great!
jerry40··on Kazakhstan spells out plans for alphabet swap
Brevity is the soul of wit.

Краткость - сестра таланта.

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6:3!

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