skysight-inc/HackerNews huggingface dataset:
houseabsolute is right on this. You do not see any blasting caps, or explosive devices, military grade or not, made with PETN, that do not have a trigger. Fancy-named explosives like C-4 get all the glory in the movies, but tricky bits like the triggers don't get any attention.

Thankfully for us, the same properties that make a trigger a trigger also make triggers kind of a pain in the ass to manufacture. If it will blow up easily on the plane, it'll blow up even more easily when you're trying to make it from scratch or if you're prying it out of an artillery shell (how in God's name one would try to attempt the latter, I have no idea).
Useful? Let's put it this way: if you wanted to build a disc the size of the universe, to a precision of one atom, 50 digits of pi would be more than sufficient.

But, as Benjamin Franklin was wont to ask, what's the use of a newborn baby?
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I like the clean interface. Your gear image looks ugly. Remove the period after "...wage right now".

Set up a comet-based common chat that everyone sees, and sit in it. This will let you help users learn to use your system, and will give you valuable feedback which you can use to improve it. You need to make "sitting around waiting for work" interesting. One way to do this is to piggyback the rest of the site on an irc-like technical chat.

You absolutely need a reputation system for this.

Why limit yourself to tutoring and to minimum wage? What if I'd like someone to give me a code review for $3?
Actually, search engines are very efficient, but what about the design ? What about the way that they show results ? It´s still like 10 years ago, raw text. Maybe Apple could do for the search design what it did for the cellphone market.
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Because you asked, I did 3 > $100K exists, but this is not the point. I just think that the essence of startups, when they succeed, is more about working hard on what you build and finally be able to get a good living out of it or do an important deal that gives you a lot more than $100k.

Don't get me wrong, what this guy did is great. A side project that got actual customers using smart expedients instead of money and finally sold for a decent amount compared to the work / money invested. But just this should not be the example to follow, it's better to work hard on something for a lot of time having as a goal to do a much bigger deal, or even better IMHO, be able to turn your company into a profitable one and avoid the deal at all.

Also I think that another very good reason to create a startup is to build something that people will love and yourself like to build, without compromises, and if this is the point it's perfectly ok to just earn the minimum to live in a decent way, as what you don't get as money you are getting as freedom for you and your users.
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There is one: http://imageoptim.pornel.net/ (not mine) unfortunately it's mac-only.

If I have time left I might try making a linux (Qt?) version myself in the future.
Tell me about it:-( I've shipped mine across the Atlantic several times, and it's not cheap. I think when e-books hit the sweet spot for even technical things, I'll probably get one and sell off the real books, even though it would hurt to do that, as I really love books.
this is more or less exactly like the BGREWRITEAOF redis command. I wonder if we both happened to think at the same solution or if you in some way know about Redis and got some idea from it. I could love to know that some Redis algorithm could be of general use for other DBs implementation.

Thanks for your work, and welcome to the in-memory database developers crew ;)
Here is my 2cents on top of all those!

This is a valid for-loop in JavaScript

for (;;) {}

(Saw it for the first time in Crockford's jsLint)
Swig solves a somewhat different problem than Boost.python/pyrex. Swig works better when you have an existing C++ codebase you want to call from python while making as few changes to the C++ side as possible, while Pyrex/Boost work better when you are writing a C or C++ module from scratch to be called from python.
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Python3.2(svn) python2.7(svn) and the new GIL, cherrypy benchmark.
Is it not true that a major purpose of a DB is to handle datasets the are too big for RAM? If the items fit in RAM, isn't speed ~1/1000th (ie ratio of RAM access to HD access time) the issue it was?
The way I see it, you just need some software that checks the licenses match the usage and that calls home from time to time to check everything is in order.

Nothing fancy.
I'm not sure that I'd go as far as to say there's a conflict of interest going on here (and in the Google/AdMob camp). However, it definitely feels uncomfortable.
Call of duty. This was one of the easiest games I've played. You could literally just let your computer ai beat the game for you on normal difficulty. Grand theft auto is similar. It was easy as long as you didn't do the missions. These two games also happen to be the most popular games ever. I've been dying for gamemakers to recognize the fact that easy is good. If I wanted to get frustrated by difficulty I'd go do some work, but a game should be an enjoyable pasttime, not a placeholder for work. If it's hard, then it should at least reward adequately. Knowing you wasted 5 hours dominating real people online is rewarding. But knowing you wasted 5 hours beating a computer is a waste of time.
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Simply put, digits of pi must be same no matter which machine is used to calculate.
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Your use of the word "must" is the key. The digits of pi are supposed to be the same, but if a cosmic ray flip a bit, or if the machine becomes unstable because it runs hot, or if there's a bug in the FPU (such as happened to Intel) then results can differ, even when they shouldn't. Computing pi to very large numbers of digits is a standard warmup to make sure that new hardware is working correctly. It's only one of many tests, but it has found hardware bugs.

I remember using a machine that started to give incorrect answers when it ran too hot, and it ran hot when it was working full speed. We had to tweak the compiler to add extra NOPs into the instruction path becuase the micro-code used less power in a NOP, thus generated less heat.

EDIT: I've realised this is another example of the sofware fixed the hardware: http://news.ycombinator.com/item?id=1031384
And your post, sire, is a great example of not understanding the intent of security. There's always a tradeoff between the requirement on the level of security and cost in implementing it. Security is a matter of tradeoff.

Even with your proposed solution, there are still security breach. How does your solution handle the situation where someone hijacks the user's machine and uses his browser session? How does your solution handle the case of keylogger stealing the user's userid/password and start a valid session?

See there are always ways to make any security solution fall short. The security is always a balance between a number of competing goals. If the solution satisfies the requirement, it's a sound solution.
Any lossless format can be made lossy by simply performing a lossy pre-pass prior to the lossless compression.

The real challenge is finding a good way to perform the pre-pass; it's easy to pick a simple naive method, but optimality is likely exponential-time, or if one is lucky, polynomial with an intractable constant (using trellis).

The fact that PNG uses a dictionary-based compressor instead of a PPMD-like system likely makes the problem much harder.
It seems that's what Blippy, the company Paul mentions at the beginning, does: http://blippy.com/
In comments of original article there is a notion than e.g. Google helps in development of open source projects (Webkit) just because it is cheaper for them (others develop it too). There is another perspective to the issue: Webkit is infrastructure to them - it is an wonderful example of why and where Open makes sense - by developing and fixing Webkit they assure better standards adoption - thus saving money in their "primary" market (search, gmail,...).
sorry, error in form is my mistake. but i think the comment is not out of context. it basically describes what kind of an addressbook can enable our real social network.
He's also behind QEMU (cross-platform, multi-architecture CPU emulator/dynamic recompiler/virtualizer), TCC (the Tiny C Compiler) and various other projects.

see http://bellard.org/
From the FAQ:

== Why did you do this ?

I am not especially interested in the digits of Pi, but in the various algorithms involved to do arbitrary-precision arithmetic. Optimizing these algorithms to get good performance is a difficult programming challenge.
Arbitrary-precision arithmetic with huge numbers has little practical use, but some of the involved algorithms are interesting to do other things. In particular:

- The Discrete Fourier Transform. This transform is widely used in many algorithms and most modern electronic appliances (such as digital televisions, cell phones and music players) include at least one instance of it.

- The reliable managing of a very large amount of disk storage, at least for a single computer. Specific methods were developed to ensure high reliability and high disk I/O bandwidth. The same ideas can be applied to other fields such as video streaming or data base access.

- The whole computation is an extensive test for a computer including its CPU, RAM, disk storage and cooling system. A single bit error during the computation gives a bad result. A bad cooling results in a hardware failure.
Another example occurs on this thread: http://news.ycombinator.com/item?id=1032063

Here's the link: http://news.ycombinator.com/item?id=1032152
MySQL has nothing on Postgres these days.

Except for some engines you can choose from.
Maybe it turns into impossibly hard later on, but the first couple of screens are just a series of surprise traps that kill you on the first time but are reasonably easy to avoid once you've learned them properly (compared to this type of impossibly hard: http://www.youtube.com/watch?v=nscP9QpXoFM). If you look at this with Raph Koster's Theory of Fun (http://en.wikipedia.org/wiki/A_Theory_of_Fun_for_Game_Design), it's basically brain candy constantly telling you you've gained valuable skills by learning about new trap patterns in the environment, so I can see why it's compelling.
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Am I the only person who hates reading/visiting/watching/listening to Mixergy interviews?
In addition to my previous reply, ask yourself this:

How would you do it?

There are some serious technical challenges, and the FAQ and accompanying paper mention some. It's not easy, so "just for the challenge" might be an answer. "To learn stuff" is another.

In short, the value isn't always in the destination, it's sometimes in the journey.
The world has always functioned on ego inflation and vanity, though. From 500-1500, it was "You can be more righteous than your neighbors if you just believe our priests." From 1500-1900, it was "You can be more wealthy than your neighbors if you just invest in our venture." From 1900-1995, it was "You can be more attractive than your neighbors if you buy our product." From 1995-present, it was "You can be smarter than your neighbors if you visit our website."

It's interesting how this corresponds with the most idolized caste in society at the time. From 500-1500, it was the clergy. From 1500-1900, it was the financier/plantation-owner/prospector/industrialist. From 1900-1995, it was the starlet. From 1995-present, it's the geek.

Substance is nothing more than empty form that nobody likes. (Or, as the musician sometimes says it, "What does it say about classical music that its antonym is 'popular' music?")
i accidentally upvoted you instead of downvoting you. I find the Mixergy interviews to be awesome. The interviewer always asks the questions people want to know, rather than the questions the interviewee wants to be asked.

and extra points for transcripts.
There is a silver lining here. Without American protectionism, the Brazilian biofuel program wouldn't have left the prototype phase. It was (1) the 70's oil crisis, (2) plenty of sugar and (3) nowhere to sell it that made alcohol economically viable.
I don't have any advice for software to use, buy I do suggest you use something other than your production DNS domain and mail server for sending out these messages. Even if all of them opt-in, some of your recipients will mark your messages as spam and that mail server/domain will start to show up on blacklists. If your production domain is xyzcorp.com, maybe you should register xyzcorp-messages.com for this activity.
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Once Richard Stallman himself came to my home office and configured everything. Then he was like "free as in beer, dude. now wheres my beer?"
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What can it be used for?
I really think it's best to have a good variety of easy and difficult challenges in a game (and you need challenges). People will never forgive a game for being too easy, or for being too hard. A nice middle ground needs to be found.

This reminds me of the "Iwata Asks" article recently on HN, and I think they have a better take on the issue. http://news.ycombinator.com/item?id=970566 A couple quotes:

Iwata: So you wanted to know what it was that made players insert another 100 yen coin once the game was over and have another go?

Miyamoto: Right. And basically, I concluded that this was born of the players being mad at themselves.

...

Miyamoto: Well, since you've purchased it, it's surely better to be able to see the ending.
QEMU also provides components used by Xen HVM mode and the KVM virtualization systems.
I disagree. A joke will always be more concise than the explanation of what (possibly) makes it funny.
I agree on both Vinge & Egan recommendations.
Permutation City by Egan is also quite good.
It's equivalent to

while (1) {...}

and I've heard it referred to as a "forever" loop. It's a natural consequence of each term of the for being optional---skip the init and/or the update, and nothing happens, skip the test and it just always evaluates to true.
It's valid in C and other related languages, too.
After that you should read "Collapse", it's even better than Guns,Germs and steel imo.
Flat Earth News - Nick Davies: An interesting discussion about falsehood and PR in newspapers and the media generally.

Hackers & Painters - Paul Graham: Read it this year and enjoyed it a lot.

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A Simple Act of Violence - R J Ellory: I'm reading this right now and it's the first book in a while that has really grabbed me. Well written crime/thriller type book.
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I just wonder if it would help some patients, if you could buy placebos. I mean branded placebos: "This is the placebo used in trial x and y and shown to have positive effect on z and w".
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That really depends on the query and the data structures used in the database. You can query large amounts of data on the hard drive very quickly if you store your data and indexes in data structures manually tuned for the problem. Modern operating systems / databases will try to use up your available RAM anyway to cache hard drive so keeping the whole database in RAM (if it fits into the RAM) won't help that much anyway.
These guys are onto something -- check out untitledstartup.com
I'm looking for a Python / Django tutor at the moment and would love a system where I can choose and change the types of tutelage as I go along.

A $/hour scale is going to be the easiest way for me to ascertain the skill/knowledge/experience of the tutor.

Initially I'd be happy with someone outside the US - hell, I might even continue with someone from outside the English speaking world - but having the variable would be nice.
Who are the competitors in this space?
I am a big supporter of the PostgreSQL project, and I have been using it exclusively for my own projects (recently I started using SQLite for all the experimental ones) - but competition is a good thing and this schadenfreude about MySQL problems is not a mature thing.
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So what does this offer over a key-value store (such as BerkeleyDB) other than the JSON query/object abstraction layer?
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Two of my favorite books that are freely available online, both in the genre of post-singularity utopian science fiction:

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However, this still damages Americans because we've decided to tax sugar cane ethanol imports as a means to promote domestic ethanol development. This means that the less efficient corn ethanol is cheaper than sugar cane ethanol. Hmm, sounds like another corn product that's replaced sugar in the US.
As far as I understand mySQL

- You have to choose engines

- Some features (e.g. ACID Transactions) don't work in some engines.

I'm not sure exactly why this is a feature.
In PostgreSQL (and in most sane DB software)

- You don't have to choose engines

- All features work all the time. There's no posiblity of foolery like, say, beginning a transaction and then updating two tables, then finding that one of the tables will ignore the transaction but the other won't.
That might be an ethical way to sell placebos (homeopathy is at the moment demonstrating the unethical one) — I just don't know whether it would be as effective. Are placebos also effective when you know fully well that you take nothing more than a sugar pill? I don't think so.
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In civilized countries, we don't pay to withdraw money from an ATM, regardless of which bank we have have.

(I would really like to know how that business model works though, if the banks just soak it, or if local businesses can pay a bank to get one)
The Hot Standby feature is in the recently-released PostgreSQL 8.5alpha3, and what it means is that you can have a read/write master and several read-only slaves; if the master goes down, you can start switch one of the slaves to be the new master without a restart.

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Actually, not 9! but (1+2) x 3 x ... x 9, because multiplying by 1 is no use.

According to my brute-forcer, you can get everything from 0 to 2283 but not 2284. The first few missing numbers are 2284, 2758, 2812, 2902, 2932, 3076, 3119, 3137, 3208. The first gap of more than one number is that you can't do either 3802 or 3803. The first gap of >= 3 numbers is 4280-4282. The total number of different achievable nonnegative integers is 14026. The biggest two are 9! and (3/2)x9!, unsurprisingly.
A google user can quit google.

I think this is true in roughly the same sense that an English speaker can quit English -- not strictly speaking impossible, but it requires a significant investment and wrenching adjustments to the way you have done things for years.

Try going cold turkey on Google for a week. I have attempted it before and I can't even make it 24 hours. And most damningly, I'm generally not even aware I'm failing at it -- the fingers type google.com for my navigational needs before my brain even gets involved in the loop.
You know you are taking a sugar pill with a demonstrated effect. That might do it.

How would you do a trial for that? Placebo placebo?
It is actually a forever/infinite loop unless you break out of it with code like this:

var i = 0;
for (;;) {
log(i);
i++;
if (i > 10) {
break;
}
};

In a way is recursion, it is equivalent to this:

var i = 0;
(function () {
log(i);
i++;
if (i > 10) {
return;
}
arguments.callee();
})();
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