skysight-inc/HackerNews huggingface dataset:
Your making some major assumptions. Big O is great when dealing with large data sets but beware the K.

Deleting random elements from a linked list is an O(n) operation because you need to find the element(s). They also waste a fair amount of memory.

Determining whether a value is an element of a set is an O(Log(N)) operation on an ordered array. And faster than a self-balancing tree because of cash locality issues.

Small Hash tables are slower than arrays because of that hash function. (I love Hash Tables but they make a poor default choice.) Edit: Set operations where not what I would call an "access pattern," but it's a valid point.

PS: Buffers and Bitmaps are both well suited to an array. You can't use an self-balancing tree in a hard real time system. And so it goes, when arrays don't suit your needs there are great options, but they are less common than you might think.
My bad. I tried looking ahead of time to see if this had been posted before on HN and didn't find anything. I think it's because of the post's title, which differed from the article's. I was also under the impression that HN didn't allow repeat submissions, but I guess that feature expires after a certain amount of time. Does anyone know a close to fool-proof way for searching to see if an article has already been posted before?
What about:

6) Of the 100,000 people who are doing the same thing, be the ONE person lucky enough to be a breakout star so that others can write self-serving blog posts about you?
NOT TRUE. (Spam)
are internet companies still considered high-tech?
http://en.wikipedia.org/wiki/High_tech
The kind of loon that's going to insist the entire thing was an elaborate soundstage production isn't exactly going to be swayed by claims that the signal, which they think was fake anyway, was received at a given location.

The laser retroreflectors are at least observable now, which is a pretty big distinction.
Except that by default, Chrome opens new browser tabs adjacent to the tab you're reading. When I command-click a link in an older session of HN, the new tabs don't show up on the far right (unless all the tabs to the right of the HN tab were opened from this window in this way).

I would actually prefer all tabs open on the far right because I tend to use tabs in a very random access way and Chrome forces me to think more.
Awesome. I see yummy.com vans all around Santa Monica, but would love for a big player like Amazon to come in and validate this space. The article lists $2.50 for a single grapefruit as an indicator that the pricing will be high. I'd love to see a comparison. $2.50 for a grapefruit in mid January in Seattle might be a normal price for all I know. Show me pricing on staples like bread, flour, cereal, pasta.
A few things...

1. I'm not a big believer in saying "this person won this award so their argument must be well thought out". Even geniuses can make stupid arguments.

2. Krugman is an ideologue and people like that tend to ignore facts that don't fit their world view. So he doesn't have to be a "bumpkin" to not realize an obvious fact he just needs to not want to see it (just one example: http://tomstechblog.com/post/Another-Defense-of-the-Paywall....)
New Yorkers pay taxes on Amazon purchases. There are two or three other state where Amazon purchases are taxed as well. New York would be an ideal market for Amazon Fresh. Fresh Direct has whetted consumers' appetite for grocery delivery service while committing enough errors that Amazon could easily use their brand to gain significant market share.
Please review Quochilla, my site for Startup Quotes
I run a startup and sometimes want to browse quotes about a specific topic. I couldn't find a really great solution so I built my own.

Please let me know what you think I can do to make the site better. I appreciate any and all comments, negative or positive. Thanks for the help!

Also, if you have any favorite quotes you want to add, feel free.
Two other Mac projects that bring the excellent Google Chrome tab UI into other contexts: TotalFinder, a Finder mod that adds tabs to Finder windows (http://totalfinder.binaryage.com/), and Kod--still in beta--which will be a text editor somewhere in the ballpark of the mythical TextMate 2 (http://kodapp.com).
OK, thanks for the clarification. I was under the impression that it was a promotional video you had created, not something TheNextWeb put together.
I have a CS degree so I have read the basic texts on Algorithms, Operating Systems, Compilers.

I recently got through the Design Patterns book. I was thinking of picking up either a new language (Go) or start the "Mastering Regular Expressions" book, not sure which.
Good robots.txt for wordpress blog
No problem. I guess "dupe" was a bit harsh. I just remember seeing this on here before and that there were a lot of comments which others might enjoy seeing. You're right, the post permalink has been changed. HN allows repeat submissions after some amount of time, though. I use searchyc.com to search for previous submissions, but it's not completely fool-proof.
Dropbox is the best thing I have ever come across. It has saved my life so many times on term papers and keeps all of my school work safe. Never will a "dog eat my homework" happen again...although I suppose that the excuse does come in handy sometime... :)
Are you sure? As I understand it, Amazon Fresh LLC is a separate legal entity, just like Lab 126 and A9, both of which are based in California.
Four years ago, I went indie
> If we don't hire you, we pay you as a contractor for your time. If we do hire you, we pay you either as an employee or contractor for your time (depending on what our accountant says).

If you are in the U.S. I hope you've had this hiring process reviewed by your legal counsel. Given the brief description above you are quite possibly violating several federal employment laws in addition to IRS rules on what constitutes a contractor vs an employee.
Sounds very similar to how browsers are optimizing js engines towards specific test implementations.
Ctrl + W or Ctrl + F4
I'm making it a pledge to teach one non-technical friend a month to use these keyboard shortcuts.
Is the "self-serving" comment due to the author taking something small or possibly insignificant and over analyzing it to hear himself talk? If no, I'm sorry, that's not necessarily my opinion on this issue. Though there seems to be a fair amount of stuff on HN at times that is super short blog posts about, IMO, clearly obvious things. "Allow users to share" on a social networking site. Gotcha. I don't know, I may be completely off base here.
Great, thanks for the link. This seems to be a better alternative to a Google search on HN.
China's TenCent starts $760m gaming fund
Have you considered reading some software engineering classics as well?

Code Complete, Rapid Development, The Mythical Man-Month, The Pragmatic Programmer, Peopleware and A Discipline for Software Engineering? (The last one is controversial).
Big Clue:

I didn't notice this until after the contraption was turned and he started fiddling with the balls again, but if you watch closely, you can see that they roll "up" different ramps at different rates: almost a second along the lower right ramp, yet barely a half second along the upper left. This wouldn't happen if the ramps were all the same length and incline, as they're meant to appear.

Sometimes, you just need to know what to look for...
Do most laptops come with middle click buttons? I can't remember ever seeing one that does, and I've used plenty of non-Apple laptops.
Harvard grads; fitness plan members pay more if they don’t work out
Obama’s Energy/Climate Change Czar is Leaving the White House
Don't get too worked up about this, it's just an unsubstanitated rumor based on some very flimsy speculation.
It is perfectly possible to resolve a (6-foot) flag with a telescope.

The article states "the Earth's atmosphere is never steady enough to allow resolution below about one arc second for most locations". But according to the European Southern Observatory one can do 1000x better:

"With AMBER on the Very Large Telescope Interferometer (VLTI), the astronomers were able to see details on the scale of one milli-arcsecond, corresponding to being able to distinguish, from the Earth, the headlights of a car on the Moon."
-- http://amber.obs.ujf-grenoble.fr/spip.php?article154

Therefore a 6-foot-wide flag ("headlights of a car") would be visible as 1 or 2 pixels with the VLTI, which is made of four 8.2 meter reflectors.

I presume the actual flag left by the astronomers was somewhat smaller, so one would need a tad better telescope, but certainly not something with a "3.5 mile diameter".

Upvote me. HN readers need to be educated :-)
I think you're missing the point. Many developers don't know how to develop systems that will work well in production. At the same time, many sysadmins know only about the OS, hardware, and network. Great sysadmins are learning to combine the two skill sets. It's clearly a hybrid role and not a case of one replacing the other.
What's an example of "more fine grained control"? I've used C++ more than Java or C#, but it's not apparent to me how removing a language feature gives you more fine grained control.

A const reference in C++ is like an interface that doesn't have any mutating methods, except that all the methods of the interface have the same names and signatures as the original, and I don't have to actually type out a separate interface definition, I just choose which methods I want to appear in both the immutable and mutable interfaces by appending a "const" to their signatures (bonus: if the implementation for the const version is different, I can overload it.)

Sure, C++'s const has tons of problems, but it seems like the Java and C# designers looked at it and said "const is probably more trouble than it's worth so let's not bother." Which is a fair assessment, I guess.
Zhihu (知乎) – China’s Quora Clone on the Way
I'm having flashbacks to the dot com bubble.
Hmm there are a few net books that have 3G now
How Might Steve Jobs's Liver Transplant Be Affecting His Health?
CPython to LLVM to Javascript - Python in the browser
In India, the rates are around 8-9% on Savings accounts.
Could it have something to do with the McCollough effect?

http://en.wikipedia.org/wiki/McCollough_effect
You should try gmail + ActiveSync push. Made the leap a week ago, and the whole mail experience feels a lot smoother.
I'd also like to see a comparison but I tend to think Amazon is charging a high price.

The thing I keep thinking is both WebVan and HomeGrocer blew threw billions and eventually imploded (WebVan bought HomeGrocer and then Amazon bought WebVan and re-purposed it as a regular online store). The argument always given was that grocery margins are already razor thin so a company that delivers groceries can't make enough to stay alive.

So maybe that's how Amazon is surviving in Seattle right now. Offering a great convenience at a premium price.
Amazon in its entirety could be considered just a "small matter" of taking orders and shipping logistics.

Note: in practice neither of these things is a small matter.
Show HN: LifeLitUp
www.LifeLitUp.com

We're going to be opening up to an alpha soon, and if you'd like to check it out when we go live, put yourself down on our list.

I'll try to answer as many question you guys have, without really trying to give much away.

Thanks!

P.S. If you have any advice for me, hit me with it!
People take a healthy amount of vacation at 37signals.

And if we spot someone burning out because they aren't taking enough vacation or time off, we remind them - and sometimes strongly encourage them - to take some time off.
...but the point of a rollup is that you do want to buy five or seven cars out of those twenty.
It definitely sounds like you wear multiple hats at your job. Shoot me an email... I'm interested in hearing more about what you do.
No, sorry. Blogger contacted and covered us.
Kim Kardashian Wants Her Son to Look Like Boyfriend Kris Humphries
Only 47% of working age Americans have full time jobs
Just because the DMCA sucks doesn't mean a lawyer shouldn't be the best lawyer they can be.

Now, if he fails to sever contact with the RIAA, or fails to be impartial to any case which may involve the RIAA or copyrights while being solicitor general, that's a different argument.
I have read Peopleware. I was thinking about getting The Pragmatic Programmer next. I somehow feel that just reading books without doing anything with the knowledge doesn't work.

The books I enjoyed the most were Richard Stevens' Network Programming and Unix Programming books. Those books teach you a ton of things while helping you implement something useful. They were very hands on. I haven't been able to find anything similar in a long while.
Ask HN: How do you manage your business cards?
I was concerned by the lack of Wiki-fu about the Dawes Limit on this forum, but it turns out that the wikipedia page is very sparse. This is a more detailed page on the subject and explains where the Dawes Limit comes from.
http://en.wikipedia.org/wiki/Angular_resolution
You're spot on about commodity ETFs. They are required to buy at a certain time and sell at another time. Actually they're windows but they're well published. As you might be able to guess traders have had a field day with these funds. Most don't even closely track the commodity they're supposed to. Many have lost money while the commodity has gone up.
Unrelated fact: the stock "article" picture at the top is from a Polish article about snap elections and Polish politics circa 2006.

Web copy: http://www.wprost.pl/ar/86230/Wybory-szeryfa/ (pictured part is on the second page), machine translated: http://translate.google.com/translate?hl=en&sl=auto&...
I know this might come off soapbox-ish, but I think preconception people have about your product/service can be helpful in identifying your message.

I like eating well+healthy and spending 20 minutes every couple days to buy fresh products seems like a small investment in both my body and wallet. There are things that having money is supposed to help us sweep under the rug - I'll never move anything bigger/heavier than a box from one house to another again. Nutrition shouldn't be one of those things. Nutrition and health should be one of those things that having all the spare money/time lets us get more, not less, involved in. The investment is moreso important if you have a family.

The fundamentals of nutrition, say how to pick a melon or how to understand nutritional labels, is as lacking as the fundamentals of personal finance. These delivery services can do well by specific groups (say the elderly), but in general, I worry that they'll make us further ignorant about nutrition.
There are plenty of examples of commercial software that is distributed by the copyright owner free-of-charge, but requests agreement to a conditional license during the installation process.

I believe that in the US, this relies on a court ruling (sorry, no cite) that as the use of software inherently requires making a copy of it, such use is a copy right. This is unlike the case of a book or a painting.
Sears does this already with their mygofer.com service.
It'll be interesting to compare the discussion here to previous times IE9's stance on ACID3 has been discussed / referenced.

A couple minutes of Googling brings up:

http://news.ycombinator.com/item?id=1859375

http://news.ycombinator.com/item?id=1196054

http://news.ycombinator.com/item?id=1399998

http://news.ycombinator.com/item?id=1738681
what does "self-serving" even mean here? Its my own blog.
Nothing attracts top-notch engineering talent like the lure of working in the call center.
I've developed stuff on Nu before, it's magically easy compared to other language binding frameworks for Cocoa. I still use nutest as a testing infrastructure for projects that use exclusive objective-c.
Don't fool yourself. No lawyer decides to go to bat for the RIAA in civil court out of a sense of justice, or for any other reason than to bring home giant bags of money.
Dropbox did something interesting with "best comments" on this reddit thread. Reddit spoofed our logo, and we did it to celebrate.
http://www.reddit.com/r/reddit.com/comments/dm8ep/ohai_reddi...

The best comment was about interesting ways to use dropbox. Some even I hadn't heard of. The second comment thread was recursive actually, showing how awesome reddit can be.

These things are more fun than serious. Throwing around GBs to people that like Dropbox is really common (see Dropquest, http://dropbox.com/edu http://dropbox.com/free ). I wouldn't read too much into it here; folks just thought it would be nice and fun.

btw I work for Dropbox. I ran that reddit mini campaign.
I find myself on my iPhone, hoping my 3G will work through the store walls, doing research as I shop. I would love to be able to do that research from home. I would be able to plan better, because I would know specifically what was on the shelves instead of making a list of generics and filling it in at the store.

To me, this sounds like a step in the right direction.
I think we're on different pages. The books I recommended aren't API, framework, language, CS kinds of books. They're books which discuss being a software engineer.

Are they immediately applicable? Sometimes. Are they applicable for the rest of your career? Definitely.
Clickable: http://www.LifeLitUp.com
Objective-C on Windows - setting the environment
Certified Life Coach & Environmental Educator
Also, you can middle-click on the back/forward buttons to open the previous/next page from the history in a new tab. Another really nice touch.
A great lawyer would balance his prowess before the bench with his ethics.

Just because a law is on the books does not mean that we have to litigate.
It would help if you would at least pitch your service...
I spent two days trying to figure out how to compile a 32 bit library on a 64 bit system.

A sysadmin would have figured it out in 5 minutes, and lazily dropped by my desk to show me where I went wrong.

In my experience, sysadmins aren't just people who keep things running during the course of Business As Usual, you guys are also a terrifying repository of arcane knowledge.
I am curious if you have any supporting evidence to this? I'm not refuting it (though it seems absurd, but I assumed your statement was a sarcastic generslization) as I didnt bother to research this.
If you haven't read the entire story of WebVan, it is worth it. Their problems stemmed from far more than just razor thin grocery margins and had much more to do with late-90's, bubble-fed hubris than anything else.

Unfortunately, WebVan scared anybody off from making a serious investment in it, even though they never actually invalidated the market. If anybody can make it work, it will be Amazon; and if they start succeeding, I can't imagine it will take long for Walmart to follow.
Well, it goes both ways. Often, I have a whole lot of tabs open that I want to get rid off so I just rapidly middle-click on the left-most one and keep doing it until they're all gone.

Of course, you can always right-click and say 'Close all tabs to the right' but I usually forget about that option at the time when I'm doing it.
Will existing infrastructure disappear in 10 years?
Along with being Fireballed today, it seems wherever that site is hosted on is currently not returning DNS records for the domain. Shame, as I have yet to see the content and would like to.
You also have to remember that startup and infrastructure costs were a LOT higher when WebVan and HomeGrocer started (although WebVan did go above and beyond the call of duty with their spending on top of that).

Amazon already has all of the technical infrastructure they need, so it's just a matter of keeping the storage and transportation costs down (e.g. not spending a billion dollars on a warehouse).
The desktop clients update themselves regularly and have for some time.
Did you ever become conscious of the fact that you're sitting in a chair staring at a rectangle? Why or why not?
... and thus, Arkansas finally got their heart's desire. They outlawed evolution.
Wow, this coupled with Word Lens make an incredible pair. With all these language barrier breakers of recent, I wonder when the equivalent of Adams' Babel fish will become a reality? Surely it is right around the corner! ;-)
Long live the nanny state.
Unless you're a lawyer providing counsel, I'm quite certain we're solid. That's not to say I'm right... I'm just fairly confident.

We send out the necessary W-9s and everything. Effectively, our candidates are freelancers until we hire them... and we pay our freelancers according to IRS rules.
There are few things that irk me more than treating intelligent, highly paid professionals as mindless modules plugged into the system. There is a difference between, say, a criminal defense lawyer who fulfills a role needed to sustain our system of justice, and a lawyer who gets paid to be litigious mercenary. I don't think it's a big leap to assume that lawyers with the qualifications and enough professional stature to get hired by the RIAA have other job opportunities. Little Timmy's not going to go through the winter without shoes because daddy didn't take the RIAA job.
Hacker News doesn't need a post about every celebrity death. I can already get this on CNN.
I've used Vons grocery delivery plenty of times in the past ($10-15 delivery charge, drivers not allowed to take tips), with pretty decent results.

If Amazon can improve on Vons' clunky ordering process and other problems (limited selection, substituted items can be way off and can change the total price quite a bit sometimes, fruit/veggies are sometimes bruised or not fresh) and keep their costs down, I think they will probably have a good shot at making it work.
Safari does; the shortcut is Cmd-Z, because you're "undoing" the closing of the tab.
I'd assume the reason they are only in Seattle is because the margins on grocery are slim and the logistics a nightmare. So they are dipping their toes into their home market first. Effectively eating their own dog food for lack of a better expression.

Launching in tons of cities requires lots of distribution points.
This close tab behavior would indeed be fantastic if the most important tab behavior use case was "user should be able to close multiple tabs in rapid succession using the mouse." But really, how often would a typical user need to do that?

There may be a good reason to eschew prevailing Mac UI conventions and to put the tab close button on the right, but this isn't one.
I am the King of Laziness. If I'm given a hard deadline I work hard and get stuff done. On my own I'm useless. I've been looking into cognitive behavioral therapy. If it's effective, then I'll be cured. If it's not, then it serves as a commitment device to Get Stuff Done. Of course, I haven't gotten around to locating a therapist. <insert procrastination joke here>
I have been wondering about two things:

1. Is it possible to not use a cookie to opt out?

2. Why must we opt out, instead of opting in.
Perhaps. I'll agree that the huge conference books are pretty useless (though I can see why university libraries want them), and not something I'd ever purchase. Those papers I _do_ print out. But I did specify monthly magazine in my original comment.
Do these people realize they are making a caricature of themselves... how does this stuff get past any sort of filter...

Next it will be reading a book, and then talking to a friend, and then carrying something big and heavy, and then tending to children...
I'm not sure about that. A9 and Lab126 don't share office space with the rest of Amazon, but Fresh is right in my building.
I just tried this right now from the http: version and it still has the same problem.
P4Wn3d!

But does that make the story worthless?? I think, No!!
Is there a full story of WebVan posted somewhere? I've read bits and pieces along with actually being in the Valley at the time but I'd be interested in knowing more.
Pakistani, living in Miami.