skysight-inc/HackerNews huggingface dataset:
I think we'll have to disagree that maintaining coordinated flight is "straightforward." Or especially performing a crosswind landing, which is the controlled de-coordination of an aircraft so that it can hit the ground at exactly the right orientation.

http://www.youtube.com/watch?v=mMvLuUJFHYk

If someone insists that it is 'straightforward' I'm left to conclude that either they're a very experienced pilot who has been doing it for so long that it's difficult for them to remember what it was like to learn, or they don't have an understanding of what's involved.

Consider this: You're flying an airplane. The elevators are trimmed to maintain level flight. Now you turn the yolk to deflect the ailerons, and the aircraft rolls. In this rolled state--say we're rolled 20 degrees from vertical--the elevators are no longer horizontal. They're 20 degrees off the horizontal meaning their force is no longer 100% pitch. It's now a combination of pitch and yaw. Firstly this means that they're no longer trimmed properly to maintain level flight and the aircraft will begin to pitch, secondly they are now causing the plane to yaw into the turn. So now you have to bring the rudder into the equation to compensate for the elevators, but it's also no longer a 100% yaw control surface, it now affects both pitch and yaw and you are left with a situation which should look very similar to that in the Zeppelin NT.

Describing the problem of coordinated flight, you end up with calculations which would be quite difficult to do by hand, and one might conclude that "no human" could hope to pull it off while sitting in a cockpit. Yet it is something humans can not only do, but with a bit of practice can do without even having to try very hard, by learning to "feel" the aircraft.

I think the author's joystick is neat and I congratulate him for making it. My only point is that the author errs in saying that "no human" could directly handle the Zeppelin NT's control surfaces. I think is error is not in overestimating the complexity of the problem but in underestimating the human ability to handle such problems.
Have they considered what the languages are being used for? Scala with its intensive static typing is more likely to be used for serious systems, while Groovy for quick scripts to test stuff. And then there's JRuby not mentioned, because its lumped under Ruby: who knows what proportion of that is JRuby and what is Matz's Ruby?
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Facing some weird trouble using your system? It’s been throwing some kind of error messages ever since you turned it on? What, it’s not just that, you think that its devices have got screwed up?
Hi HN!

this is the result of two days of hacking during the weekend, the obvious inspiration is Codea. I and my son have fun with Codea but we can't use it often (we don't have an iPad at home), so I wrote this code. Later I realized that using an external editor was not working so I added a retro-computing alike editor, and now it is much easier for kids to modify and execute the program.

Everything is currently very work in progress, I hope I'll find more time to invest into this project, but even more I hope to get pull requests by interested parents that have children and are interested into teaching some programming.

EDIT: since I used most of the time hacking on the code I was not able to add some decent example. Please if you write some nice one drop me an email, pull request, whatever.
Building Expression Evaluator with Expression Trees in C# - Part 2
Thank you. I was a bit surprised by the mp4 container (instead of matroska), as well as DTS not being allowed. Now it all makes sense, and it's not really a big deal at all.

SD content is mostly being used on smartphones and tablets. For iOS users, this would require a lot of extra work to convert the files to the limited container choices.
One thing that puzzles me.
Pretty much every email client now will not display images in HTML emails by default.

But most email marketing tools provide some metric called "% of emails opened" or something similar.

Now assuming that the marketing emails you send out are mostly text (as they should be), it seems unlikely that many recipients will bother clicking the "Show Images" button since there is no reason for them to do so (not to mention that it often brings up a privacy warning or the function may have been entirely disabled by IT for unknown sources).

So in that case, that metric must be enormously unreliable. So much so as to be basically meaningless?

I have also heard statistics from business types who say things like "Email marketing is useless, only x% of people even open the emails" and I have also seen such things repeated on websites about internet marketing.

Something doesn't seem quite right here.
I agree there may be no 'market' making money from students who have to live together, but the problem of 'shared ownerships' applies to much more people (even incubators themselves!).
It's not sophistry, the distinction raganwald is making is relevant.

However, even if it is not technically accurate, in the interest of getting the topic in front of as many Rails developers as possible, it's probably better to sweep that distinction under the rug and let them figure out for themselves whether it applies to them.
But the libraries are what makes haXe so powerful, and they clearly do lack documentation...
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Of course they can - and they should! But if you contact 100 companies, 99 will think it's an amazing idea, but only 10 will actually know what to do with the connectors. Those 10 are the only viable leads out of 99 positive responses, because the rest doesn't have a clear road map in mind when it comes to closing the deal.

I'm not saying businesses are stupid, but they haven't spent as much time thinking about the value and opportunities a connector represents - as you obviously have. And that becomes a barrier in front of closing the deal. After the initial positive response, they need to think through all the good and bad ways they can use the connectors, and then plan it, assign resources - and only then are they ready to use your product.

I strongly urge you to sit down and in detail define "What is the absolute smartest thing a business can do with our information", and then see how you can provide THAT as a service to businesses. Maybe in a partnership with a company that specializes in delivering products and services based on the social graph.

If I seem adamant about making my point, it is because I have a failed start-up on my resume due to a failure of recognizing this fact in due time. It was a B2B product, that provided the exact same results as the main players in the marketplace, but smarter, faster and way more cost-efficient. My service could deliver in 3 days, what the main competitors did in 3 weeks, and at half the cost. But I couldn't seem to penetrate the market - and I was absolutely sure it was a marketing issue - and kept pouring money into new and arguably better ways of marketing the service, with only limited betterment as a result. In the end it turned out to be a product issue, and I had spent all my money on re-inventing marketing at that point (self-funded). My hubris was "It's self-evident that my way of doing things is better than what you're doing now. You should do it my way!". And it was an easy hubris to fall into - all the smart people in the business I talked to, agreed that my product was "amazing" and "the new and better way to do things", but those responses come from a different context than closing a deal. I expected businesses to make a very small change in their way of doing things, in return for a much faster, better and cost-efficient product. I should have understood that it is my task to make a product that fits into their way of business.

Sorry about the rant :) I paid a shitload of money to learn this one lesson, so it hits a few buttons when it comes up.
Your system probably lacks a font that can render the unicode symbol they use: ❯
Mini cámaras
Esta mini cámara puede grabar algunos de los que quiere un soborno y entregarlo a la policía en todo lo que expone que lo atrapó en el momento adecuado.
So your contention is that because something is "relevant" that prohibits the possibility of it being sophistic? The distinction is completely artificial. This bug in rails can be directly traced to recurring security problems. If that's not a vulnerability, then we speak a different dialect of English.
Without having read all the 119 comments (sorry for that), it seems to me that this is exactly the kind of device Microsoft is envisioning with Windows 8, isn't it? Unfortunately, up to now you have to choose between an iPad (or something similar) and a full-fledged notebook since netbooks are basicly killed by the former and not powerfull enough for the later. So, as far as I see, there's a gap that can be exploited, why carry and buy in the first place, two devices when one is enough?
The only point where I beg to differ with the author is if it's really Apple who debuts a gadget like that. Windows 8 seems, up to know, the most promising OS around that goes into this direction. On the other hand I simply cannot tell what Apple has in the works...
Whoever is going to to be first with such a talet - notebook hybrid, it's an intressting development nontheless
Opera seem to have bounced back after a bad February, plus statcounter seem to split iPod Touch and iPhone stats, so combined iOS would be in the either way lead.

Android definitely has the right trend to be number one soon though. (Bear in mind statcounter's mobile stats don't include iPad figures, though some other providers do).
A part of me would like iOS users to deal with the inconveniences of their more locked down platform, and also show some love for matroska. Conforming to restrictive policies is a good way of allowing restrictive policies.
This is exactly what I was looking for. Thank you for sharing!
Why didn't she write this post herself? Don't get me wrong, it's great that you want to help her out, but it would probably make a better impression if she went out there herself.
I completely agree.

I use haXe on a daily basis, for cross-platform application development and for me:
=> 1 platform (soft or hard) = 1 app.

But haXe makes it possible to keep the application logic, and not to start from scratch every time.

And I publish for a lot of platforms, in web and native forms: mobiles, smart TVs, tablets, html5 websites with a Flash version used as a fallback in case one do not have a recent browser, points of sell / touch screens. And some haxers target the game consoles.

So it is really impressive, even if the slogan is clearly not true nor relevant - haXe community has always have problems with communication (last time I talked about it with one of the founders, he answered "what communication problems? it is the most efficient way to communicate", and I finally understood that he was talking about client-server communication :D no comment!
Just a small detail, but the license is Creative Commons BY-NC-SA, so this is not really open source (not OSI-compliant).
"Threat Model

The reason we're even presenting the user with a dialog is because we want to prevent badge spamming, whereby third-party issuers spam a user's backpack with badges that they don't want. Consequently, we need the backpack to ask for the user's consent. This will be accomplished via an iframe embedded in the issuer's page.

The only sensitive information that a user needs to enter in this flow is login credentials. Since authentication is done via BrowserID, which opens in a pop-up window, the consequences of spoof attacks are minimal–so long as the user knows to look at domain names in their address bar and BrowserID's UI."

I was really interested until I got to this part. Asking the user for permission each time I want to award a badge? Complete fail. Mozilla doesn't get UI.
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Yes, construction of raw SQL queries outside library code is a security hole. The same with writing browsers in C or C++. These bad design choices can be traced to countless security issues. The same for generating HTML using string manipulation. These are all stupid ideas, and until people realise that they're holes we will be stuck with endless security problems. And it's the coward's way out to hide behind the "sharper tools" nonsense. You don't hear chainsaw vendors wearing safety flaws as a badge of pride.
Here's what happens, loosely

We have a form with the fields firstname, surname and date_of_birth. cool. user submits the form. Rails takes the post data and puts in in a data structure called params

Now, at the backend we need to update our database with this new info. Rails allows us to write

user.update(params)
user.save

and the database will then be updated with all three fields from the form. nice. except... (you can see where this is going)

I alter the form and add another field, say is_admin and set the value to true. Now, if the database has a corresponding field, that also gets updated with the value I've posted. uh oh.

Rails does have the ability to say

attr_protected :is_admin

which will stop this. It also has a config option to effectively disable mass assignment. Unfortunately it's one of those things that everyone knows about but often seems to be overlooked/forgotten
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That is true, although I think one of the main motivations to learning to program (at least for me and I guess many teenagers) is to have something impressive to show off to friends.

Having said that I think you are right to encourage people to use code as a "secret weapon" rather than an end in itself. It is a great "awesomeness multiplier" to other skills.
Can we also add to the list, "The removal of your email address may take up to 7 days".

Unless you store your marketing lists on paper in your bank's vault, there is no reason it should take this long to remove me.

I don't care if you're using an external agency who has an old copy of the list. Fix your process. You don't need 7 days to delete my email address from your database.
I suppose you mean mp4 instead of avi, as avi is only a container. So the discussion is two-fold, the container format (mp4, mkv, avi) and the encoding of audio, subtitles and video, of which the latter, h264 is pretty much the standard, and xviD/Divx are and have been for almost a decade, deprecated.
That's a practice called segmenting. Some groups do it, some don't.

There used to be a group named NOsegmenT who were staunchly opposed to the practice and included a little diatribe against it in all of their NFOs.

Also bear in mind that some groups have (in the past, at least) had pre-air sources. LOL/DIMENSION, one of the most well-known TV groups, were called out on the practice of obtaining shows from a pre-air source then manually adding television station graphics a couple of years ago. They would "pre" their releases almost instantaneously after they finished airing.
Misuse of the infinitive
Misuse of the infinitive
Use the gerund and not the infinitive:

After words which regularly take a preposition:

Remember + -ing.

Don’t say: I don’t remember to have seen him.

ü Say: I don’t remember seeing him.

Or: I don’t remember having seen him.
It's a common problem in Rails apps and has been for some years. It's a bit of a beginner mistake, though.
Allowing providers to spam me with badges - complete fail.

I may well be interested in having you award me _a_ badge, but that doesn't mean I want you cluttering things up whenever you feel like it.

Mozilla's policy is that the user has control over their data, and I fully support that.
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NFC contactless payment readers are already common here in big retail chains now. By the time the consumer adoption becomes more widespread, most phones and tablets will have NFC radios in them as well, so it'll just be a matter of software support (e.g. Google Wallet).
I second that. Loved the concept, but the portal gun in the game is very inconvenient.
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Some of my sites are not hosted on my domain, so I couldn't use solely this.
itay, if you emailed iwritecode with general advice, can you forward it to me. I'm guessing I'll be in his partner's position in 4-5 months.
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If the skillsets overlap, that kind of shift towards production does happen. For example, the 80s game-cracking scene also became the 80s demoscene, because the various skills they acquired in cracking copy protection overlapped a lot with the kinds of skills that were useful for producing interesting interactive-art type software. It's not clear that x264 encoding and distribution produces skillsets that a particular helpful for film production, though, so I don't see a strong reason to expect them to start producing films.
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A lot of people take a more directly cynical view of content creation, rather than the more passive ignorance we have with regard to health. Our health is not something someone else can take generally, content is.

It is too easy to look at the rampant copying and dirty tricks used to pull in viewers for ad revenue and think "if you can't beat them, join them" or worse "I might be able to beat them, but joining them seems easier".
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Yep. After using the Transformer Prime (mostly as a tablet, but with the keyboard dock if I need to write anything longer), I've started touching the screen on my MacBook Air as well. Doesn't do much, unfortunately.
Hack4urwish
Must be an American thing, I guess. Is EFTPOS (ie debit card) less common in the US than in Australia? Seems odd to provide a credit card service by itself. People don't pay for coffee and things on credit, do they?
That's a horrible logo. I had no idea that was "Square" at all when just looking at the logo.
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There is no denying that there are huge differences between men and women. Nothing highlights this more than the dating arena. Women are after not only a good time but also a long time.
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The article is the description of chardham yatra which is preformed form Akshaya Tritiya to Dhanteras in Garhwal regions of Uttrakhand.
Guy with - 13 here. I've had LASIK surgery a few years ago and seeing good is magical. (My insurance in the Netherlands/Europe even covered all expenses). THE IMPORTANT THING IS: Your eye will still grow old and become less flexible. The image you see is corrected via the lens, but the muscles holding your own 'real' lens become less flexible over time causing you to see/read details up close less well. (This is why people with perfect vision have reading glasses. Their eye-muscles are less flexible and can't contract good enough to read close-up text). Have you tried using reading glasses?

Also (in time) your real lens can get 'cloudy'. This is why (mostly) older people get a new lens). Your eye looks good they say, so I don't think it's a cloudy thing, but you never know.

In my case, a few years later my right-eye retina completely imploded (thanks to KRAV MAGA training years before) causing 95% of my vision to disappear. They've drained and patched up my eye back to 90% visibility, but there are a lot of laser-scars on the retina. This causes me to see bits and pieces of my vision less well. I need to keep moving my head a bit in order to 'see past' the scars. Does moving your head make you read text easier? Have you had your retina checked? It's easy, painless and quick checkup, any doctor can do it.
Good luck man!
From 3 days ago:

"What I want you to see in that thread I mentioned is the way the core team perceives this. You are not discovering anything unknown, we already know this stuff and we like attr protection to work the way it is."

(https://github.com/rails/rails/issues/5228#issuecomment-4292...)

After reading for how long he tried to bring attention to this and only got a top guy to say that kind of stuff. The guy who hacked is not right in any way but I don't even have words to describe the person who wrote the above line.
Android is a browser now? Uhh, I run Opera on my Android! Does that mean I've put a browser in a browser, so I can browse while I browse?
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Make the couple comfortable with the shoots
Many couple feels awkward while giving s some warm up shoot .So good photographer must be good in his job, by working in a few random warm-up pictures you can often break the ice so more natural moments can shine through.
`Angry Birds' Maker Says No Concrete IPO Plans [video]
I stopped reading when I saw that the author can't distinguish GitHub and Git usage…
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Niall Ferguson gives a compelling insight between the similarities between past great civilizations collapse and our own right now. High intriguing and must see
It might also show how battery life is becoming the main feature of portable devices. And iPad is hard to beat on that (though my Transformer Prime is even better when the keyboard dock is connected)
Loving the mashup, awesome idea. Also thanks for the link to love2d, looks like a brilliant framework.
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There are a number of ways to imprint business image in the minds of customers, one such way is designing a LOGO. Same goes with construction companies.
Thanks for this.

Something I've noticed from some classmates who where early starters is that they're not "superstars" after all. Some start at the age of 10 with basic but somehow they get stuck or something. A friend of mine had programmed since he was 10 (we're about 21 here) and he had done demos, designed his own processor and he was simply that guy. I looked up to him and I could of course never reach his level of prowess... Until one day when he was going to write a small program in C but he couldn't figure out how to do a loop without a goto. That was a pretty real eye-opener I tell you.

Another classmate also started at around 10 but he's still harbouring opinions like "C++ is the best, the rest are bad".

I'm not sure where I'm going with this, but I thought I'd share this anyway. The point I think I'm wanting to make is that when you start doesn't really matter, it's all about what kind of person you are and how much effort you put out.

Of course the reason I feel jealous sometimes is the thought "what more could I have done if I started sooner?". This is a bad thought to have I think, but it's still there somewhere.
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I really like the idea and the code is just great.
I had fun by just reading the C code and experimenting a bit.

Now that the editor is included it's even more awesome :)
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That already exists in so many variations.
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This is exactly what I have been talking about! The way to get kids into programming is exactly the same way we all got into it: the 8-bit micro experience. Top marks!