skysight-inc/HackerNews huggingface dataset:
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Ask HN: I just got my iPad 2 from US, which would you recommend as must-have?
As the title says, I just got my iPad 2 from US and I'm eager to know which apps you guys would recommend as must-have. Thanks in advance. :)
I have serious doubts about the value of an endless series of ever-shorter summaries in the name of consuming more information.
apparently, I forgot the 'apps' in the title and the edit-update button doesn't work. sorry.
If you have an application that runs only on cell phones, you shouldn't be worrying about different screen sizes. Have you used layouts in Qt or any other UI toolkit? UIs on Android work in a similar way. Android will properly scale your UI to different screen sizes, just like a Qt window can be resized without crapping up its layout.

About graphics: Google defines 4 screen densities: XHDPI, HDPI, MDPI and LDPI. You create separate graphics for each of them and import them into your project. Android will automatically pick the appropriate version of your artwork depending on the device your app is running on. No manual work required.

E.g,

<LinearLayout
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:background="@drawable/slate">
</LinearLayout>

See that @drawable/slate in there? Android will try to find the appropriate version of "slate.jpg" (or "slate.png", or whatever) from one of these directories: res/drawable-hdpi, res/drawable-mdpi or res/drawable-ldpi. If it can't, it'll try to look for the file in res/drawable[1]. So you have 3 versions of the file residing in 3 separate directories.

Don't worry about screen sizes. They don't vary too much anyway. Phones these days lie somewhere between the 3" to 5" spectrum. Not much of a difference for most apps, unless your UI is doing something very special.

---

[1] This is the default project structure; you can probably change it.
Dropbox, Flipboard, Amazon Kindle and Skype.
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Robots Take Over Recycling
The original Plan 9 file server, kenfs, is a kind of versioning system. He must have thought it was a good idea at the time.
Google Music service could work.

We have corporate music shoved down our throats from the 3 company radio / 4 company label monopoly.

If one were to reinvent the whole process, giving more profits to artists, aggregating the best tunes 'pandora style', we could see a shift in the zeitgeist of the music we listen to in general.

Let Apple have Lil Wayne and Lady Gaga.

With the advent of cheap professional home recording equipment and loads of talent waiting for a break, the industry is waiting to be dumped on its head.

We are talking about Google here. Why don't you use Altavista or Yahoo what that company does? You could always Ask Jeeves...
I really like this new theme on TechCrunch today, giving some attention to under-reported startups doing it "the old-fashioned way". I know it can't last, because it won't get as many page views as other articles, but it's nice.

I'm really looking forward to having an excuse to use Octopart. I've only occasionally had to find electronics bits and pieces in the past, and it's always been a pain in the ass. Thanks for building something people need, guys.
Excellent article and here is a link to an open source Dual N-Back game, have fun.
http://brainworkshop.sourceforge.net/
Why is it so hard to get them to upload their music? I'd think that you could just have a button in your UI that says, "Upload all my music in the background". And then just do it constantly in the background.

I'd think that Apple could just have the same button in iTunes.
Why assume it gets no input? (Why build it if not to interact with it?)

A grown, working brain has been shaped by its input – changing the connections, the chemical balances, and other things we don't yet understand (but someday will). So when talking about a 'simulated brain', I think an embedded history of meaningful input, and continued interaction, is implied.

(Also, creating such a brain and then depriving it input might be torture, as with extended sensory deprivation in natural humans.)
Are we so miswired now that we can't take the time out to read 4,500 well-written words on a subject, ...

I'd love too, but there's a lot to choose from, so some guidance on what may be worth the time investment is invaluable.
Popular Food Delivery Service - Delivery.com launches iPhone app
FB seems to have a different dynamic than Twitter, because the posts float around for several hours once posted.

With Twitter, after ten minutes or so, your post is lost in the shuffle unless it hit big earlier on and received many retweets.
very very good point. I generalized "Status Updates" to Twitter and Facebook. I changed the title of the blog post so it is more clear.
Kitten and iPhone Stolen from Santa Cruz SPCA
You don't have to use the proposed mechanism: it's mostly intended for programs that already implement their own caching layer.

I'd expect the limited address space on 32-bit processors to be a bigger issue than the complexity.
Show HN: Gistrr.com - Trying to build a "cliff-notes" for the long-form web.
We're trying to build a community of people who don't have time to read (but crave) long-form content on the web. Think of the Economist, Atlantic, New Yorker pieces that take 5+ minutes to read.

The concept is that 10 people can read 10 articles and share the nuggets of info with each other, vs. 10 people reading the same 1 article.

Gistrr (name pending by the way) is an early release and we have a LOT more to do, but we wanted to get a prototype up.

Would love feedback on:

1) The name
2) Design, do you like the magenta highlight?
3) What types of articles would you want to have summaries of?
4) Any part of the current user experience that confuse you?

Thank you so much for any input!!
This is because the Android emulator is a real emulator emulating an ARM instruction set on your x86 box (it uses QEMU), whereas the iPhone Simulator is a proper port of CocoaTouch to Mac OS X.

I think both of them suck. The Android emulator is slow and the iPhone Simulator is inaccurate[1].

Here's an effort to port Android to x86: http://www.android-x86.org. I see a a 100% x86 Android emulator running on VMWare in the near future. Tasty :)

--

[1] For example, the iPhone Simulator lets you use NSFileManager to create files and directories inside your app bundle. This does not work on the actual device. I ran into this during a demo :|
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Chaos, Science and Marxism
And indeed some summaries lack the colour, pathos and delight of the original.

Here's a summary of Edward Gibbon's Decline and Fall of the Roman Empire:

* There was a republic.
* Then there was an empire.
* Christianity emerged.
* The empire split up.
* The empire declined.

More or less factually what you might glean from Gibbon, but it lacks the sheer delight of that fascinating masterpiece of the English language.
A demo was shown last week on Nat Geo's I didn't know that. It was pretty impressing how fast it turned from a normal tent to concrete one. This will be really useful for setting up temporary shelters in disaster affected areas.

I couldn't find the video online, but here's the link to the show.
http://natgeotv.com/asia/i-didnt-know-that/videos
As is so often the case in legal matters, the difference between 'win' and 'loss' is a matter of perspective.

Don't celebrate too soon, because the Australian 1-click patent isn't dead. It's not even resting, or pining for the fjords. It is alive and well, slightly scuffed, but still broader in scope than in any other jurisdiction in which it has been allowed.

See this article (and links within) for an explanation of how a win can still be a loss.
http://www.theregister.co.uk/2011/05/12/amazon_telstra_paten...

Incidentally, the costs that can be awarded in a matter before the Australian Patent Office are strictly limited by regulation. Despite the length and complexity of the proceedings, the costs awarded are unlikely to much exceed $10,000. Not an amount that either Amazon or Telstra will care about (and, at a guess, less than 10% of what the case actually cost each party).
Yawn. Yeah, if you have a deep affection for semantic pettiness, planets without stars are not possible.

This points to a problem with our definition. For most people planets are anything spherical that’s too small to be a star and doesn’t orbit another one of those spherical non-stars. That’s certainly the definition this article uses.

I’m not really sure how one could be confused by that. One might be petty about it – but confused?
"but now it seems somehow tainted"

Except for iOS, usually you can still optionally install software in another way, or even create your own repository (Linux packages, Android markets). So the "tainted" bit is the totalitarian aspect of it.
How To Party Your Way Into a Multi-Million Dollar Facebook Job
It feels like a failure of the internet that I didn't know this existed.
Only if you have your varnishs/mod_security in several hosting locations around the world.
Well, at its base, sums are just extensions of Boolean operations. You can implement simple logic circuits which compute sums. You can check out http://en.wikipedia.org/wiki/Adder_%28electronics%29 for more information; it describes some simple (and not so simple) circuits for adding two binary numbers.
Mobile Spy
Android in Many Way
Guys, don't read the article, read the patent claim instead: http://patft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sec...

I think it's more important because I can already see many bringing up writing on the back of a photo as prior art which according to the claim doesn't apply. As always IANAL but as far as I can see other claims of others doing it also don't apply because those claims to prior art are not within a social-networking context and does not include the subsequent notification of such tags to someone else other than the person doing the tagging.

Fun Fact: last year I uploaded a photo that was taken of my class in 2001 where I marked the photo with lines mapping names to everyone in the photo. After uploading other friends then began to tag everyone in the photo, including myself...

For the record, I'm in no way defending this patent. I just think it's often easier to just jump on the bandwagon( - it is Thursday after-all) and not stop to actually think about what one is arguing against.
I dont know why they are worrying about security, i wish they could put a guy on the fact that my sony blu-ray disk, running in my sony playstation doesn't play on my nokia blue tooth headsets. Thats a problem, the fact that some people provide the sony network with acess to one of their high level passwords is beyond me.
minor nit: the author is female.
For all the talk about how Amazon/Google require people to upload their own libraries, there's absolutely no way that the music labels will allow Apple to skip this for anything other than iTunes (and probably only iTunes+) purchased music. Infact I'd be surprised if there's anyway for people to get non-iTunes music into the service at all.
I agree. It was pretty awesome to be in a paceline for the first time. Something I forgot to put in the blog post was that one guy told me..."You're not responsible for the guy in front of you. You can't do anything about what he does. You're responsible for the guy behind you."
$10/day ignoring rent, sorry. The thing is, there is no point spending extra money on things you don't care about. None. Thinking otherwise is an unfortunate habit that a lot of people (myself included) pick up. "Oh, I'll buy the middle of the road X because it probably is better than the cheap one." It's a habit I've spent a lot of mental energy trying to unlearn and I apologize if I get a little touchy when people suggest I "don't respect myself" when I attempt to be cost-effective. I would much rather be defined by the stuff I make than the stuff I buy.
This is my favorite YC startup. I remember in college trying to design and build my computer. It was just awesome to have all the parts, data sheets, and price in one spot. Sure beets an excel sheet, keeping track of data sheets, and going everywhere to find every last part! Glad to hear they hung in there and are doing well!
In fact that exact strategy is specifically addressed in the article. The answer is yes, but only until you get good at it. Then you need to move on to something else.
Huh. Do you know when they switched from scheme? Northeastern I know still uses it, shame MIT stopped.
(Apple doesn’t sell music with DRM anymore. There is only “iTunes+” music. Limiting the service to legacy music with DRM wouldn’t make any sense whatsoever. I’m not saying that the labels wouldn’t demand it, I’m, however, doubtful that anyone would ever agree to that. It would obviously doom Apple’s cloud locker right from the start.)
Ad networks will doom us all.
With Amazon's service you don't have to upload anything you've bought from them, so we can assume that Apple gets that for free as well. These deals are so Steve can tell people they get to play their whole library from the cloud, no matter how they got it, while only needing to upload songs not released by the major labels.
In that case why don't you?/they? just offer proper hosting because if you're gonna go that far you're just wasting bandwidth, money and other resources aren't you?
Here's one of their pages:

http://octopart.com/at90usbkey-atmel-682670

Interesting that their look and feel is pretty spot-on Google Apps. Probably a wise move, I'm sure by now customers grant a bit more trust to sites that 'feel' like Google, whether they realize it or not.

Glad to see a little startup like this making it though, good for them for sticking to their vision.
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Google legal: what it does and why Corporate Counsel voted it best of 2011
It takes time and lots of bandwidth -- it's a serious commitment compared to using something like Grooveshark, Spotify, or if Apple is allowed to do it: by scanning your iTunes Library xml file and automatically permissioning you to play your songs from anywhere. If you are dealing with huge amounts of files you need to create a client side uploader apps to keep track of failures and loading new songs -- which also means users have to keep that app running. This is why Amazon pushes hard for mp3s you purchase from their site to be pushed to your player and don't count for storage space. I decided on uploading from the browser using drag and drop as it was the most natural way for me to upload music, but might implement a dropbox like queue system.
mmap is how the Varnish web cache works - the cache files is mmaped in, and the kernel does the rest.

Given the awesome performance of Varnish, I am surprised more applications haven't taken this approach.
#4) Do things the hard way. It's hard for me to agree with this. In principle, I want to bemoan the decline of my ability to spell as a result of auto-correct. But I think that casts an unfair negative light on the idea of doing things "the easy way".

Think about math. There is no question that the Arabic numbering system makes doing math easier. Why should I to go back to scratching out base-60 cuneiform? I can challenge myself just as easily by pushing on to more powerful and abstract mathematical concepts made possible by timesavers like the Arabic numbering system.

I'm sure that having access to high-level languages limits my understanding of the bits and bytes. But I can use these new tools of abstraction to do things that I would have found impossible if I were writing machine code. I'm not sure I see the value in doing things the hard way, when my brain will be challenged enough probing the depths of what these new innovations have made possible. I think the author misses one crucial part of intelligence - intelligence, insofar as it is about abstract thought, is positively correlated with the sorts of things I can do without thinking about them.
I agree that mathematics in general leads to what you say (instructional techniques aside), but I'm rather arguing that it's not necessarily the mathematical techniques that are the primary thing at fault (however I do agree that it is massively lacking and misguided, as he is saying), but rather that more generalized instructional techniques and learning environments and structures are equally at fault. Students don't test poorly solely because the math instruction was that much poorer than elsewhere, but rather that the student, to due a good number of factors, wasn't inclined to learn, and rather "get by through whatever means" (or whatever other reason), as is so common in our society. That doesn't lead to exceptional skills in analysis, problem solving, or general logic.

Lastly, judging by his HN about page I wouldn't say his field of expertise is specifically mathematics, but rather that he has much broader educational expertise.
Critters http://itunes.apple.com/us/app/critter-ball/id410229817

Also, I personally recommend getting an Apple TV 2 for $99. iPad and Apple TV automatically detect each other so you can use AirPlay to stream video from iPad to AppleTV.
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I hear you, but that way lie dragons.

Ultimately, you will be the only person capable of deciding whether a particular thing was worth your time or not, and you can only decide that in hindsight, having experienced it. The finest accumulation of the greatest reviews of a work will not make up for the fact that you might glean some valuable tidbit from it that nobody else noticed.

You also have to accept that you simply aren't going to ever be able to know everything about everything that you'd like to; you will have to make choices, pick and choose. Accepting that, would you then rather memorize a pile of summaries and tidbits and factoids, or would you rather take the time to read and consider a complete discourse on a subject?

For example: I'm sitting here thinking about my argument and wondering if I'm really just full of shit, but then I suddenly remembered a bit of "Surely You're Joking, Mr. Feynman", where Feynman talks about some of his experiences in Brazil, and how the teaching at the time resulted in students that had memorized everything but understood very little.

And it strikes me that this relatively recent addiction to summaries is very similar to that kind of Brazilian education.
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I do agree that it takes a lot of time and bandwidth, but for the user it should just be one click. The app can just be a service that is installed and runs on system startup in the background, so the user never has to even think about after they clicked that button in the UI the first time.

With that said you've actually done it and I haven't. But it seems like the type of thing that shouldn't be too hard. I suspect Apple will nail it with iTunes support.
Tell HN: Never share your ideas
An idea I've been working on was recently posted to Hacker News and described in the same exact way.

It's an imitation, but for people who think sharing is going to make your idea better beware. It's a pretty obvious attempt to copy what I was doing and if they didn't describe it in the exact same way I wouldn't have thought much of it. Obviously, I talk too much.

Before you ask, no my project isn't finished. They're faster/better coders than I am. Yes, I'm an idiot for talking about it out loud in the first place.

Protesting and giving details would just give it more attention, so I'm content with this message. Shut up about your ideas and just work on them ---> giving this advice to myself.
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you definitely don't want to associate TapThat with online social/dating, it might come across as "sleazy"

It just depends on how and who you market it to. We used it in class and the ad concept we presented was a nerdy guy going up to a good looking girl on a phone and asking "can I...tap that?" and she goes sure and passes her phone and they play a game. We got some good feedback and it was described as edgy, viral and memorable.

I guess its matter of context and presentation.
I know.

I wanted to see if I could hook anyone into responding who hadn't bothered to read the whole article, because they read the summary points instead. I was hoping to make a point in a sneaky, underhanded way.
The end of condoms as we know it. Good riddance
The key study cited by the article is available in full as a PDF.

Jaeggi, Buschkuehl, Jonides, and Perrig (2008), Improving Fluid Intelligence with Training on Working Memory: http://lowellinstitute.com/downloads/BrainLearning/Fluid%20I...
Thanks so much for the comment. It's great to hear that hardware hackers find Octopart useful. We have a lot of ideas on how to improve Octopart and now we can finally implement them.
It used to be worse. Early versions of Safari would automatically execute a shell script as part of a "safe" download. They 'fixed' it by changing the disk image spec rather than the Safari feature. This type of exploit probably reflects how much thought was put into the feature.

The "safe download" social engineering attack was outlined years ago, so it's somewhat surprising it took this long to widely exploited.
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Apple Censoring Apps
Hah, I remember using all the way back to 2007 looking for special types of terminals from Keystone Electronics that were ridiculously hard to find because they were for some ancient 3/16" thick phenolic. Newark ended up having them, but Digikey and Mouser didn't. (I'm also a physics grad)
I disagree. You should be able to talk about your idea to get feedback and certainly to gauge any sort of possible market. Few ideas are truly unique, perhaps everyone else who had the same idea just didn't think there was a good enough market to be worth pursuing. Someone stealing my idea would be one possible positive indicator for me but I would still need to do a lot more market research.

If there is a decent market for your product / service, then there is likely room for multiple competitors. At that point, it's all about implementation rather than speed to market (though speed to market is still important for you because the faster you get the product built the faster you are able to start seeing money from your efforts.)

History backs this up with examples everywhere. Don't worry about people stealing your ideas.
Google still think it's the Google of old days where stock options were plentiful and Google ruled the press. But the truth is that their stock isn't moving anywhere, so you are working for a paycheck in a has-been company with over 20,000 employees. And just Bing "Google is evil" ;)