dxbydt

58 ms·

511.
by dxbydt 12y ago
Its amazing to see people actually taking the time to read ginormous walls of text and giving feedback, so thank you! afaik Knapsack as originally stated is integer programming ie. it operates over discrete n, and NP-hard, so for large n th
512.
Interviews at the grocery startup(jasq.org)
54 points by dxbydt 12y ago|28 comments
513.
by dxbydt 12y ago
Tomato tomaato. You formulate equations of motion s = ut + gt^2/2 by essentially ignoring air friction. You formulate kirchoff's voltage law L(di/dt)+1/C(integral(i)dt) + iR = V, by ignoring voltage losses across the res
514.
by dxbydt 12y ago
This is silly. Every math textbook that teaches Theorema Egregium includes the same pizza example. That's how I learnt it as well. In my case we had an animated math professor who chose to bring a slice of pineapple pizza with canadian
515.
by dxbydt 12y ago
Very nicely done. If you did this for Indian celebrities, VCs in India would throw eight figure sums to buy you out. As an immigrant, I'd say Americans are relatively more rational ie. not so celeb-crazy as to completely remodel themse
516.
by dxbydt 12y ago
> USA as no-vacation-nation As an immigrant who has been in the USA for some 15 odd years, I think this is about right. I've done a fair bit of traveling, and imho parts of Europe, South Asian & South American countries have a v
517.
by dxbydt 12y ago
Was in your shoes two years ago, coincidentally this exact month. https://news.ycombinator.com/item?id=4567857 Since then, I've met several people who were in the same boat. This sort of stuff seems to happen with reg
518.
by dxbydt 12y ago
thanks. couldn't find the actual tweets, but i guess they're buried way deep in somebody's timeline.
519.
by dxbydt 12y ago
>much of the initial conversation happened on twitter where ? when ?
520.
by dxbydt 12y ago
> so a line graph isn't appropriate here. Not just inappropriate, but plain incorrect as well. The charts as they stand imply that the user can pick an offering between "small server" & "medium server" and yo
521.
by dxbydt 12y ago
https://github.com/scala/scala/blob/v2.11.1/src/library/scal...
522.
by dxbydt 12y ago
Exactly! People fail to factor how yc companies evolve - how fast, and how far. I made this mistake twice in my life. These days I just stfu. 3 years back, I met with the poundpay team. They knew zero about handling fraud, and they said so.
523.
by dxbydt 12y ago
The color flooding visualization is very nice!
524.
by dxbydt 12y ago
I believe finding the single optimal solution wasn't the point - as others have pointed out ( for a very good solution, see: https://news.ycombinator.com/item?id=7856275 ), one can find that by hand - you don't ne
525.
by dxbydt 12y ago
It is rather sad that none of the 49 comments (at this time of posting) have made a mention of the underlying math problem, which is super interesting, and instead focus on dubious speed metrics (dubious in the sense these metrics change wi
526.
by dxbydt 12y ago
For those of us stuck in Java/Scala land, with attached results: https://gist.github.com/krishnanraman/4be978cbe8979e4c97fa
527.
by dxbydt 12y ago
http://en.wikipedia.org/wiki/Antimony Reportedly we are going to run out as early as 2020, definitely before 2030.
528.
by dxbydt 13y ago
I have lost count of the number of jobs with 6 figure paychecks I turned down because there was no scope of programming in Scala. Sometimes being comfortable with your tools is important.
529.
by dxbydt 13y ago
can you connect a bunch of these in parallel and run, like, map-reduce or something ?
530.
by dxbydt 13y ago
I think so. You've basically reimplemented a fold, but clojure stdlib has a built-in left fold. See line 84 https://github.com/clojure/clojure/blob/master/src/clj/cloju...
531.
by dxbydt 13y ago
This is a very good list - I was asked a bunch of these & thankfully I was able to solve them & land the job. It's significantly harder to solve these if you require immutability (which they did in my case, since we work with
532.
by dxbydt 13y ago
That's unfortunately a very accurate summary:) Real estate data, traffic data, weather data, population demographics, stock prices, tweets - I've parsed all that and more. Every one of them was a giant Tsv (except finance ones, wh
533.
by dxbydt 13y ago
Don't do this. Tsv has won this race, closely followed by Csv. Anything else will cause untold grief for you and fellow data scientists and programmers. I say this as someone who routinely parses 20gb text files, mostly Tsv's and
534.
by dxbydt 13y ago
Answer to your question: michaelochurch ?
535.
by dxbydt 13y ago
What happened to those concept cars that were encased in rubber/(or some other bouncy material) so when they bumped against each other, they would harmlessly bounce off ? I distinctly remember reading about them in Wired some years bac
536.
by dxbydt 13y ago
>Were you expecting a magical revelation from the gods of nutrition? Unlike subjective ad-hoc-cy garbage like web/js frameworks, nutrition is a sound science well studied for hundreds of years. We know which people in which climes e
537.
by dxbydt 13y ago
Wow, what a crazy thread! They are going about picking nutrients the way I would go about picking some web framework. Hey lets pick Rails what dynamic languages no way ok how about Servlets no way dude no semicolons for me ok then how about
538.
by dxbydt 13y ago
Wow, I had no idea its that bad. I have never worked in India, but my Indian friends describe a similar environment in the Indian public sector - jobs for life, generally no job-hopping, no worries about money, company homes, company school
539.
by dxbydt 13y ago
The notion of area has confused hordes of scientists; it is time to retire it from common use and replace it with the more effective one of circumference. Area should be left to mathematicians, topologists and developers selling real estate
540.
by dxbydt 13y ago
Exactly this. If you are a PM at a Valley outfit & can't code right now , your team simply pretends to respect you, while going off & doing its own thing. Its just one of those empirical things. Doesn't matter if you &quo

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