etrain

12 ms·

91.
Currency Arbitrage in Python(etrain.github.io)
2 points by etrain 13y ago|0 comments
92.
by etrain 13y ago
The title of this post could use some "grammar checker."
93.
by etrain 14y ago
That is one of the most affordable (and presumably useful) recruiting vectors I've ever seen.
94.
by etrain 14y ago
Since when are B-Trees ill-suited to SSDs? The big idea behind B-Trees is to store pages of keys, and SSDs still operate on pages. The key feature of B+Trees is that they are optimized to allow sequential scans through the index - I suppose
95.
by etrain 14y ago
I've been following Julia for over a year (basically since their first public announcement), and I'm genuinely impressed with the team, their attitude, and their approach to designing a new language. Their performance numbers (on microbench
96.
by etrain 14y ago
His last trick - compressed fie transfer without intermediate state: 'tar cz folder/ | ssh server "tar xz"' Can be pulled off with two flags to scp - and you get to see progress as a benefit! scp -Cr folder server:dest/
97.
by etrain 14y ago
> That's because some really evil, greedy fucks got in charge and realized they could replace partnerships with overworked, churn-and-burn associates. Or could it be that there are way too many lawyers being produced every year and the
98.
by etrain 14y ago
I had a friend whose grandfather was a hot shot lawyer at one of the largest international firms of his day in the 60s/70s/80s. She told me that he was a speed addict for close to 20 years. Long story short he got into a situation where he
99.
by etrain 14y ago
But, and this is where it gets really messed up - $4k/person/year is significantly more than current global median income. Last I checked (around 2007), this is about $850/year. (Yeah, if you're reading this website, you are insanely lucky)
100.
by etrain 14y ago
Adaptor combinators. Because they're functional.
101.
by etrain 14y ago
And, by the way, the two commands are something that could be done in O(n), rather than O(n*log(n)) - but this little procedure is so damn easy to write, that on relatively thin inputs that are less than 20m lines long, I usually just do th
102.
by etrain 14y ago
sort | uniq -c | sort -n is something I use all the time to get sorted frequency tables.
103.
by etrain 14y ago
Basically. And that's a good thing.
104.
by etrain 14y ago
Controversial views are a necessary but not sufficient condition for visionary status.
105.
by etrain 14y ago
To put it another way - if a visionary isn't controversial, she's probably not a visionary.
106.
by etrain 14y ago
He's also an ACM Fellow, from it's first class - along with people like Knuth, Cerf, Rivest, Codd, etc.
107.
by etrain 14y ago
Emptiness.
108.
by etrain 14y ago
In this situation, I did not receive compensation because of my employment agreement with my then-current employer. That was my choice, and I'm sure we could have figured something else out. I have seen candidates handle it differently, tho
109.
by etrain 14y ago
Ah, didn't realize that - throwback to my xargs days! Thanks for the tip.
110.
by etrain 14y ago
I realize it's a one-off, but you could potentially mix lines of output with a script like that. If you gnu parallel (xargs++) installed - turn that second line into a script (and replace $line with $1). cat domains.txt | parallel -n 1
111.
by etrain 14y ago
I will tell you my favorite hiring trick, by far. Before I do, though, I'll set the scene. I was looking for a new gig a few years back. I was mostly happy at my job, doing interesting stuff, not killing myself, and making good money, but i
112.
by etrain 14y ago
As we move toward languages with big standard libraries, productivity becomes more and more about knowing what you don't have to do yourself. Case in point - even as a Python veteran, I've never seen/used collections.Counter before. It'll s
113.
by etrain 14y ago
The tails.
114.
by etrain 14y ago
The premise that "information gathering" is a manager's most important task is a pretty interesting assumption underlying this post. I recommend reading Andy's book "High Output Management" for more insight into this assumption.
115.
by etrain 14y ago
Good to see some constructive advice on how to configure mongo, instead of just bashing it. Even if it's not your favorite technology, sometimes you end up in a position where the rest of the company is using something, and you need to work
116.
by etrain 14y ago
The author points out something about these Machine Learning contests and Machine Learning in general that I've noticed for a while - feature selection tends to dominate learning algorithm selection. It's good to see that there are modern a
117.
by etrain 14y ago
I'm pretty stoked on Go. I freaking love C. Love it. It's like they took C and went to the best disciples of C's creators and said "look - we've got these problems now nobody envisioned 40 years ago. Can you make C for us again, but better?
118.
by etrain 14y ago
We subscribed to Newsweek throughout my childhood, even living overseas. I recall excitedly going through it every time it arrived. As far as the news digest format went, in those days they mixed topic areas fluidly, while keeping their rea
119.
Ask HN: What has made you exclaim "I've been doing it wrong for years"?
2 points by etrain 14y ago|0 comments
120.
by etrain 14y ago
Another classic is his article on solving sudoku puzzles. http://norvig.com/sudoku.html Though languages with constraint systems built in have even nicer solutions (e.g. Oz)

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