skysight-inc/HackerNews huggingface dataset:
> The prop tips are well into the supersonic range.

I've yet to come across any firm proof that the Bear has supersonic tip speeds, even the wiki article says "according to one media source".

Now obviously with any prop aircraft you can generate a scenario where the tips go supersonic, but I feel "The prop tips are well into the supersonic range" is a disingenuous statement. I do agree with you in general principle though - tips can, and do, go supersonic.

Some back-of-the-napkin calculations for the Bear, using the figures given by the media source on wikipedia:
5.7m prop diameter 750rpm at cruise

Circumference = pi*diameter = 18m 750rpm = 12.5 rotations a second

Giving a tip speed of 220m/s, so contrary to the media source the blades are not supersonic by themselves.

You could, of course, engineer a scenario where the combination of the airflow through the prop + the prop tip speed > mach. But you can do that with a Boeing Stearman too, you just avoid it by design due to the increase in drag, and not to mention the stress placed on prop blade that is subsonic at the root, transonic in the middle, and supersonic at the tip.

I've seen people give the noise created by the Bear as evidence of supersonic blades, but I'd put that down to interactions between the contra-rotating props, a bit like blade slap on a helo.

Now the Republic Thunderstreak is an interesting story - a plane with (proven) supersonic blades: http://www.youtube.com/watch?v=UFhSzReWTgs
DJI and 3DR are two of the most popular manufacturers of RTF (ready-to-fly) drones. If you don't have much experience with flying model aircraft, I'd definitely recommend that you practise with a micro multicopter such as the Hubsan X4 H107C. You could also join a drone user group - see dugn.org - there's a group in San Francisco that is focused on startups.
Show HN: Hacker News Colors for Firefox
That's unfair. Lots of infrastructural projects are done in java. E.g. my personal favorite: lucene (+ solr, elasticsearch).
After the Assured Shorthold Tenancy period you can be given 2 months notice at any time. Regardless of what kind of tenant you have been, whether you paid your rent on time, etc etc etc.

I know it has happened to me and many others I have spoken to. What sort of an environment is that in which to lead a settled life? Many many priced out tenants have had to move their kids from school to school as incompetent landlords discover they got their sums wrong and have to sell up.

If you are a 'problem tenant' and stop paying rent there are difficult processes to go through in order to force an eviction. But I am not talking about the far less common case of non payment of rent from a difficult person. I am talking about decent families being forced out of their home as the norm.

That is a disgrace.
Great, this'll probably adversely affect Rdio and I'll have to leave them to go back to Spotify with its shitty mobile apps.
> Imagine an attacker knows everything about your random number generator's internal state ... But over time, with more and more fresh entropy being mixed into it, the internal state gets more and more random again.

Of course that probably only only counts if an external or local unprivileged entity manages to become informed of the random source's internal state. If the attacker has direct access to the kernel's state then they probably have access to influence (or at least monitor) the incoming entropy such that they can stay informed of the full internal state.

There is a point in some attacks beyond which your only half way guaranteed solution is the metaphorical orbital nuke platform.
Coders have near zero respect for other coders. It's an industry where work is taken very personally.
BipIO - https://github.com/bipio-server/bipio is all JavaScript, the biggest thing it needs right now is a migration of the configuration dashboard at https://bip.io into the public repo.

Currently a Backbone/LESS/PHP(Zend) stack and needs some CSS consolidation, a decouple from PHP, (most of this is already done), a Gruntjs build system, security audit and general cleanup and also an Apps/plugin framework

oh and there's also Templar (http://mjpearson.github.io/templar/) which could be a whole lot more awesome :D
Yep, and college students have no historical record of law breaking or vandalism in the name of entertainment whatsoever.
You're not going to get concrete comparable examples because Haskell has not had enough adoption and resources thrown at it to be able to compare it in this way. What I can do is point you at another comment I wrote about this the other day and the responses it got.

https://news.ycombinator.com/item?id=7299034
Newsweek journalist (Nakamoto/Bitcoin) private info leaked in pastebin
The problem with these massive ecosystems of dynamic code extensions is that when you layer leaky abstraction on top of leaky abstraction, each layer being broken in its own subtle ways, the end result is a ticking time bomb waiting to cost its users thousands or millions of dollars in lost productivity. Your example of JavaScript in web browsers is a perfect demonstration of this.

We are the only engineering discipline where there are a significant number of people who actually think extensibility is more important than stability or robustness. Imagine a civil engineer pooh-poohing the stability of the bridge he's building, pointing instead to how easy it is to add additional lanes. Imagine a mechanical engineer decrying running a formal analysis of a new design for a car, saying "forget about that, look at how easily customers can plug in custom dashboard attachments!" This is lunacy, plain and simple.
Isn't Telegram racing to the top of the charts?
Mate that is a cool-ass widget, really slick! I'd love to help if I can find time. All in favour of reducing dependencies too! I'm currently working on a game which involves leaflet maps so could be some crossover.
I assumed it was chosen because it looks like a "cheesecake" (is that the right word?) pinup, not simply to invoke the character.
It's not a totally false stereotype in that it happens frequently , and has happened a lot historically, that non-technical people somehow convince technical people to implement their vision and then take credit for all of it if it takes off, or, conversely, blame the technical people if it doesn't.

That said - in these cases, it is partly (or mostly) the fault of coders who display poor business acumen by somehow allowing themselves to be wrangled into something, well below their market value, that isn't theirs, by a charismatic individual.

That said as a coder I have respect for actually good business people who may not be technically minded. I have respect for their ability to make business decisions analytically, and to understand how the end-user sees their technology without necessarily knowing how to build it. Steve Jobs is a good example of this. I do not think I could do what he did, no matter what.
And under-performs.

Frankly, for the type of wars we're likely to fight in the foreseeable future, the most common mission would call for something like a cheap prop-driven plane with a ton of ordnance hardpoints. Take the flight surfaces off, stuff 3-4 of them into a C-17 and fly them to the theater of operations, go to work.

But the aviator community would hate it.
Thus confirming our suspicions: Not that Satoshi Nakamoto is, but that Satoshi Nakamoto are!
Install Jekyll using Chocolatey
As you probably already know this website and blog is created using github pages which behind the scene uses Jekyll. More on this you can read on my blog post.Every time I write a new article or make a change I would like to preview it before publishing it to live website.
Artists know how to use tin eye already. But automating the process for batches would be useful. Now here's the question: How many people would pay for this service? Artists ain't exactly rich.
I'm not sure I follow. The advice for the "single person always do the merge" is essentially make sure the people doing the merges are experts. These mistakes do not seem like the kind of thing I have heard of experts doing.

Seriously, you can not call yourself a git expert, if you think rebase is a difficult thing to explain.

Might you sometimes make mistakes? Sure. I hardly see this as a systemic thing, though.

The mirror shenanigans I agree suck. Not sure what the real takeaway is there, other than don't rely on mirror as a good form of backup.
This story is such a waistoshi timeamoto
Because anyone could do that and send the photo to Dorian who then tweets it as Satoshi.
I found it in this thread https://bitcointalk.org/index.php?topic=504463.msg5560970#ms...
Nope, I'll be sure to check it out.
Out of curiosity, how do you power them? I'm assuming solar isn't enough. Do they have to continually come down to re-charge?
Capture, hell - I'd enjoy shooting them down with my Remington 877 Express (with gooseload), or maybe my .243 Ruger rifle....but only if they are hovering.
I think I've just been Angularick rolled.
The Holocaust's legacy threatens one company's US rail projects
National tragedies aren't really a numbers game. I can vividly recall a great deal of how I felt on the morning of 9/11, and it was quite some time after that before I learned how many lives were lost.
"Ladies and gentlemen, this is your captain speaking. We have a small problem. All four engines have stopped. We are doing our damnedest to get them going again. I trust you are not in too much distress."

Actual announcement from a BA 747 flight:

http://en.wikipedia.org/wiki/British_Airways_Flight_9
What did they reveal? We already knew there was only one dev and that currently purchased licenses will work with ST3 (but not older licenses)...
> (say you go to 00:15 AM to bed, it's good to have a light, rich in fibers dinner at 8-9 AM: Yogurt, Vegetables etc. Avoid fruits, after 6 AM, only black bread and vegetables should be taken).

I'd just like a clarification on this. Why rich in fiber? Doesn't fiber require more energy for digestion, which shouldn't be spent while sleeping?
You might ask why this is 'declarative' and that would be a good question. Here is why I consider this declarative:

Your dependencies are declared in the markup by special data attributes added to script and link[rel=stylesheet] tags. The dependencies get parsed and the markup can be automatically updated to the best available set of packages that satisfy these dependencies. What is neat is that the system will resolve dependencies as deep as needed and will insert the relevant script and link tags in the correct order.

Why is this different?

Most package managers focus on the offline development world. This scheme was designed specifically for Plunker [1] which is an online front-end development tool. This means that there are several constraints as well as several opportunities to change the front-end package management workflow.

I wanted users to be able to add packages to their existing html markup, however strangely they might have designed it. I also wanted the markup to look 'ok' after these new packages are inserted. This was quite a challenge. I also didn't want to include all of the packages' code in each Plunk as that would really slow down the service and increase storage costs.

As a result, a trade-off (and possibly benefit) I've achieved in this system is that all package ressources must be accessible online (ideally via CDN).

The result is a system whereby the markup declares package dependencies and can be introspected and updated to newer package versions and/or to identify existing packages.
>No warning light was on and the navigation computer worked as usual; (I just needed a warning light in my panel to indicate that I missed a wing...)."

Hilarious.
I'm not an expert either, but afaik it's not a speed issue, just an issue of compatibility with USB's standard driver-spec-thingy for keyboards: its authors decided that six keys (plus modifiers, iirc) should be enough for anybody, right?
This is not a very good or complete answer as others are pointing out.

Promises allow you to make your async call in a context where you don't know what has to be done next. You pass the promise around and attach to it as needed (and chained if necessary), that is the lack of coupling that is so desirable.
My first Firefox Addon. It is a port of the original from chrome, which I like very much, but couldn't use anymore: https://chrome.google.com/webstore/detail/hacker-news-colors... (since chrome fails on my system I had to return to FF).

I like it especially in combination with my hacker news userstyle: http://userstyles.org/styles/71445/better-hacker-news-design. But I tried to make sure none of my changes break anything in the original design.

Hope someone likes it, and I appreciate feedback.
That's how people are going to cheat at your game.
Just signed up.

One suggestion: two-factor authentication. After so many hacks, 2FA should be available on any site that holds users' bitcoin.
Are you blogging about it? I have often thought of doing this but not really sure about the aspects of it.
Hiding synchronous vs. asynchronous with higher-order functions means doing it with callbacks. It's generally hard to take a function that was originally written to run synchronously and change it to run asynchronously without changing the way it's called.

I don't see this as world-changing either, but I understand why people like it.
Building your own supercomputer using Ubuntu and Kerrighed
The following page describes how to build your very own supercomputer using household-type easily available parts and tying them all together using Kerrighed, a Single System Image operating system for clusters. This guide is mainly based on the install guide located at www.kerrighed.org, but includes many extra details!
One element of corporate strategy is that there is strategic value not simply in having [acquired company X] but also having kept it out of competitors' hands.

Facebook owning it means Google, Apple, Microsoft etc don't. Facebook likes that.
Exactly. This is the problem I have with the hype around the promises API, and if you're a Dart developer, Futures.

They claim to solve "callback hell" but they can't. Callback hell is the result of poor programming style, not a limitation of the language. Callback hell is just as possible with promises, and there are plenty of examples of it on the internet.

I'm not saying promises don't have benefits, and can't result in some nice programming patterns, but generally they are just a different way of doing the same thing. It's not that callbacks are more tightly couples then promises, its that people write their code that way.

Their API's have some other nice benefits though.
That was much better than I expected from the initial still.
Doesn't your spaceship get ground down or blown to bits by interstellar dust?
It's usually a matter of taste. You shouldn't have types or values with 20 characters, but you also shouldn't do C-style "no vowels" naming.

It's also worth mentioning that the "-- ^ comment" syntax is so that Haddock, Haskell's automatic documentation generator, can display the comments in the HTML documentation. Example: http://hackage.haskell.org/package/Cabal-1.18.1.2/docs/Distr...
Why does using a Lua-basef format stop the files being corrupted?
This reads more like the recent Net Neutrality decision than anything else.

It's less "Drones are free to operate commercially" and more "If the FAA wants to regulate (commercial) drones separately for any other model aircraft, they need to create explicit regulations that apply to them"

What seems explicitly ruled against, is selectively interpreting existing regs as applying to an imprecise (and shifting) definition of "drone" and trying to use a "Policy Statement" as de facto law (by claiming a request for voluntary compliance, but then suing for non-compliance), without following the appropriate procedure or meeting all of the requirements of new regulation.
Can A Startup Help Publishers Cut Out Twitter, Facebook, And Flipboard?
XMonad is an example of a Haskell application that is compellingly extensible.

Edited to add: Also, since you asked specifically about extensible editors: http://www.haskell.org/haskellwiki/Yi
The issues in the randyfay.com post are due to a misunderstanding when using git as a "centralized" repo like SVN. Git, by design, does not enforce a central repo even if you designate one logically. These issues can be completely avoided if you merge the right way:

http://tech.novapost.fr/merging-the-right-way-en.html
This is simply awesome news for startup/small business UAS operators in the US in the short term. I do have some concern, though, that this could cause the FAA to now rush the rule-making process which could result in half baked, ham fisted regulations. This is especially possible if we see several high profile accidents during this new free-for-all period.

Cheap plug: if you want to play with aerial photography but are more of a software guy than a hardware guy, check out my embarrassingly buggy side project at http://airboss.io. It's an app that lets you use an old Android phone mounted on a drone as a photography/video platform with real-time first person view streaming using WebRTC.
Linode gets hacked, not you. Didn't mean to insult you or your bulk copy/pasting skills of reposting a link on this thread.
$200 billion happened to him, that's what...
Well, I do have a vision where solar power is actually enough, but that's certainly not possible today. This might work in 3-4 years, depending on what happens in battery tech and solar efficiency. Otherwise, I think you might have to build a network similar to Matternet [1] / Tesla Supercharger; making a ground-based charging infrastructure investment might be necessary to get started, even if that tech isn't necessary in 10 years.

[1] Matternet is awesome. http://matternet.us/
"we do not intend to sell in the near future."

Maybe that?
I'll refrain from making a smartass comment, just state I understand the difference perfectly. This causes a jump in physical memory usage. See reply to your parent.
Finally,a good argument to ban guns in the US

/sarcasm
I'm pretty sure behemoths like NetBeans and Eclipse rate pretty damn high on extensibility.

Anyhow, you don't have to take an all-or-nothing approach. It's pretty common to write game engines in C++ and then use a dynamic language to provide game-specific scripting on top (e.g. World of Warcraft uses Lua for the UI, Civilization V uses Python for most of the non-engine stuff). Also, Photoshop has javascript builtin.
Events that moved Linux forward
1. I haven't proposed any solution. I'm defending the existence of regulators. And I never said regulation was perfect. Just that we need some.

2. Asking "Who will regulate the regulators" is unproductive. Obviously, human nature wont change, and corruption will always exist. But just because regulation isn't perfect doesn't mean we should throw it out.

Also, you should already know the answer to your own question. By promoting transparency, citizen participation, and establishing checks and balances, we can mitigate the effects of corruption (but not entirely). This has been known for, I dunno, a few hundred years. Are we really debating this now?
> Both /dev/urandom and /dev/random are using the exact same CSPRNG

The author keeps coming back to this fact, but I don't understand how it negates any of the arguments in favour of using /dev/random. What does it matter if the numbers are ultimately coming out of the same PRNG? I don't see how this negates the "self-healing" property of /dev/random or any of the other advantages. It seems like the author is really just saying, "/dev/urandom is probably good enough".
About everything that humans can use to reach a destination in space can also be weaponized. If nothing else, a simple space rock dropped down the planetary gravity well can make a huge boom when it hits the bottom.
Unit testing: TDD with POCO Objects with navigation properties
Why doesn't the pilot eject and let the plane crash? Is the plane more valuable than the pilot's life? (A damaged plane, no less.)
Partially being facetious here, but if he were a "hell of a good pilot" wouldn't this landing not have had to happen? That said it's pretty impressive that he managed to pull this off
It is perhaps more accurate to say the prevention of allowing a free market to operate in housing is the problem. Government meddling. What the UK desperately needs is for these artificial props to be removed from the housing market and for the market to operate. This will lead to a correction which at this point actually benefits more people than it harms.

Selling piles of bricks to one another for ever increasing prices is plainly unsustainable and yet it has become the basis for the UK economy.

We need that money to go into entrepreneurial activity the likes of which a startup hub is well placed to encourage.

This story of property investment trumping entrepreneurial activity is a microcosm of the story of the UK economy as a whole since the housing bubble started 10+ years ago.

The UK desperately needs a free market oriented government. Traditionally the conservatives were that party but it appears no longer. They have just continued to damage the UK as the party before them.

It is appalling.
It's only cheating if the developer disapproves.
By forcing companies to disclose the truth about their product.
Sorry, maybe I missed something, but what, exactly, don't you necessarily agree with?
How does Tineye make money at the moment? I'm sure there's a business model somewhere that would work.
Beats Music API
Well Jan could argue that it would cause a user exodus which would then reduce the value of WhatsApp (thus facebook) more than the added revenue would increase it.

I'm not saying that he would. Or that he could convince enough of the Board that this is the case. But he could.
Just like C++! (Yes, I too made that up on the spot.)
This is very impressive. As someone who has no idea what I'm doing, I was able to make an animation of a circle moving and growing from left to right in 30 seconds without reading the manual or tutorials. This is how user interfaces should be built!
The only reason BTC price rises is because of hype and idiots buying into the hype. Once the hype dies (as it's dying now), you can experience the pleasure of bag-holding.

Why don't you all in BTC? You are free to laugh at me when it hits 1k again.
> (remember technological progress is exponential not linear)

No it is not. For example, airliners fly about as fast as they did a generation ago, and if you buy a desktop computer today it won't be noticeably faster than the ~3 year-old one you're using now.

Do you really think the next TV you'll buy will be exponentially bigger than the one you have today? Prepare to be disappointed.

warp-engine would require FTL travel, which is not possible. How can you travel a distance less than zero? At C all distances are zero.

DNA is already a pretty good way to travel the stars, a human ovum (the largest human cell) has a low enough mass to get out of Earth's gravity well using only electrostatic or solar-pressure forces, no fuel required. If it were somehow interstellar-vaccum-hardened and able to modulate the energy gradient it uses to change direction, it could travel to the stars.

I suppose you have misunderstood quantum entanglement, as it does not offer any way to communicate instantaneously over vast distances. It's more like when the light-standard in front of you turns green, you know INSTANTANEOUSLY that the "entangled pair" light-standard perpendicular to your view is red.
I like the much simplified interface on this.
Let's create a Meetup for that!
That's fine for a single segment, but these are reused. So overtime, this can cause a spike in rss, see - https://groups.google.com/forum/#!msg/golang-nuts/hAWuOP5MY8...