skysight-inc/HackerNews huggingface dataset:
I reach for this whenever someone mentions the inevitability of humans colonizing other planets - which I did earlier today. Nice to see others thinking it's worth highlighting.
Goethe's Faust. It's more densely packed with brilliance than anything else I've ever read.
OK. Does not still look complex to me from an implementation standpoint. Maybe I need to try it out to get a better feel for it.
Ask HN: Beginner code projects?
I'm looking for code projects (think small application size) that are somewhere between Google Code Jam/Project Euler and really big codebases. I'm trying to teach myself programming, but I can only learn so much by reading and doing the book's exercises. I have a intermediate knowledge of Python and I am halfway through K&R (although that book has good hard exercises). Does anyone have suggestions or know of sites that have good project ideas that would force me to experience different aspects of programming? One idea I have, for example, is an IM client to understand network protocols.
I'm not trying to imply that. Yes, I do think it's reasonable to require a Facebook account for college students. We also publicize the events in local papers, flyers, word of mouth, and even our blog. Facebook is the best way to get >85-90% of students who come to come.
I think the main challenge is whether there will actually be any desire to colonize in the first place.

By the time we acquire the means to leave the solar system society will have transformed so completely that it's impossible to predict what our goals will be. Resources and population are not likely to be problems at all though.
They displayed my email address in plain text on a world-readable page, so I tried to delete my account, but that feature is not available yet.

Failed solutions display the output of your program run, but do so incorrectly by eliminating leading line breaks.

Also, a program can just pipe the input to the output and see what the test cases are.
I agree with the notion that no human society will purposely invest money in a trek to another solar system, but I strongly disagree with the notion that humanity is stuck in this solar system for eternity.

There seem to be two common misconceptions about the colonization of space:

1. People will colonize other planets. The notion that future generations will desire to burrow into other planets is as strange as expecting people to build a new city by digging caves in a cliff wall. Just as we now build apartment blocks and ranch houses, we will someday build custom habitats that aren't continually ravaged by earthquakes, tornados and spring floods.

2. Reaching the next solar system will be momentous. People will populate neighbouring solar systems just as our ancestors moved from Africa to other parts of the world... gradually from one generation to the next, each one drifting a little further into the Oort. One day a habitat that has its own artificial star within will move from the most recent piece of raw material to the next, not realizing that the one orbits our distant sun while the other orbits another star entirely.

Barring catastrophe at home, this future is likely. It's just the same story that's been happening since Lucy's family left the Great Rift Valley.
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I hate to be snotty, but one experience Unix CLI user is worth at least 100 clicky clicky administrative assistants... just saying
Simple probability dictates that it is only a matter of time before a sufficiently large body travels through the Solar System with sufficient velocity (including direction) to reach somewhere else in sufficient time (but not too fast that we can't perform an orbital intercept) that we can essentially build a colony on it.

Not really. You could also say that "simple probability dictates that it is only a matter of time before all of the air in the room is, at one point, in just one half." And, of course, you'd be wrong. When the odds are so staggering against something, it's more likely it will never happen than it will happen. We don't know how frequent such bodies are. But my guess is so infrequent that most solar systems in the universe will never have one travel through them.
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And that web page is a thing of beauty - props to them.
Note that you didn't actually address his arguments.
I'm actually okay with humans never leaving the solar system. Our robotics and technology is advancing at a fast enough pace to satisfy my curiosity about what's out there. Look at the amazing stuff we've gotten back from a couple of Mars rovers, without ever having set foot on the surface. Let's just send robots out. It's much cheaper, comparatively easier...and can certainly be done much sooner.
I would go so far as to question whether the first "person" to set foot on mars will be recognizable to us as human. We are simply too fragile.
As an interviewee I've used Codility before, and that was actually a very good experience. They had some bugs with displaying line numbers, but the functionality was all there. I would recommend it from the testee perspective.
I think unfortunately that is a bit too narrow for most startups. I'm not sure if the "master of none" comment was meant to be pejorative but you have to understand that startups have to execute on a wide variety of tasks with limited resources. That doesn't leave much room for non-essential specialization.
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I went to a state-related school, so maintaining a high GPA was pretty easy. I don't think my grades ended up mattering much to anybody other than me after college, but at the time they helped. I was able to take advantage of some opportunities during my undergraduate years that required good grades. I got a fellowship to do undergraduate research, and a two-year full scholarship from the math department in my last couple of years. At the least, I saved a fair amount of money.

So, judging from my experience, I'd advise you to keep an eye on the current financial effects of your grades. Otherwise, I wouldn't sweat it. Unless you're planning on staying in academia, or applying to grad schools.

I do have one additional piece of advice, which you can feel free to take or not take. It makes sense for a high schooler to resent testing, since you are forced to attend. It doesn't make sense for college student, because you're there of your own free will. Saying "I hate being 'tested' like a lab rat" indicates that you're not approaching college as the voluntary experience and opportunity it is. Losing that residual resentment might help you with some of your motivation and performance issues.
Good question. I'll speak to what I'm familiar with.

For networking, a command-line TFTP client/server is a good exercise. Pay close attention to how to handle the corner cases that crop up, and try your code against a few implementations. If you're interested in protocols, you could use libpcap to read raw packets and write a simple protocol analyzer to read packets on your home network.

If you want to focus on software architecture (e.g. how do I build a system that is maintainable as it gets bigger) you should pick a pet project, follow through, and iterate on it mercilessly until you think you hit a maximum of readability and low coupling. Then show someone who's better than you, and talk about it. I did that with an IM client and learned an awful lot.

Also, dabble in metaprogramming and concurrency. They'll pay off eventually, even if they seem esoteric right now.
Did you notice I didn't say anything about price?
I want to see screencasts of programmers at work, while we are at it.
This is amazing and exactly what I am doing. I kept thinking I need a technical cofounder, and I still wouldn't mind having one, but that doesn't mean I can't become a technical cofounder myself.

I took the same route. I picked up a ruby on rails book and just started building. I have experience with C++ and Java, but I haven't done any major coding in a couple years. I'm now building out my idea and it feels great not to have to depend on someone else to drive development.
It is okay to break rules once in a while.
I appreciate how fast you moved through the content. The audio seems pleasantly paced but the visuals move too super fast. Especially the section where you're 'simply filling out a profile.' It was losing me and i can pretty well guess what was happening. A typical small business owner won't have the same attitude that filling out web forms is something that is so obvious there's no need to talk about it. I'd slow that part down or get rid of it, or at least restrict it to a single static image.

In general, it seems close to what you would need to show to a software guy or maybe an investor. However, I'd say it's too fast and assumes too much prior knowledge of how Daily Deal businesses run to show to your average small business owner.
don't care. give me a thorium reactor and a holodeck and I'll explore the universe from the safety of cave a mile beneath the earth's surface.

alternatively upload me and I'll put myself in a more suitable interstellar body.
I would imagine there is more to accepting international orders (and shipping there) than simply 'using non-US credit cards'. Things like tariffs, export restrictions, taxes (both source and destination company), international corporate status, fraud, etc.

In light this, I find bitcoin espoused as 'opening up new markets' a bit of an odd statement.
I don't get it. Why would I want to use them instead of embedding directly?
In doing, there is a lot of reading. Every line of code you write you will likely read dozens of times. And if you are writing anything significant, they will be read many more times by others.
Well, it is not like they caused genocide or cancer.
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Please elaborate.

His arguments are related to interstellar travel as an endeavour that is undertaken as a gravity well to gravity well transit. My argument is that planetary colonization and travel from Earth to the close orbit of Proxima Centauri or any other star is not the only method by which humankind will reach beyond this solar system. Does that not address his arguments?
I'm curious if anyone here is going to offer The Bible as the greatest book he has ever read.
How are you guys mitigating the volitility. Arbitrage? Seems to me with +- 10 USD in one day, if an order comes in during a top when the quote from newegg is for $20K and suddenly the exchange tanks you'll be stuck with a heavy loss. Of course, it works the other way too...
I'm glad you wrote this, Daniel! I applied to Accenture three times, in my final year of undergrad, a year after graduating and then again when I was doing my Master's. I only got to the final stage of interviews once, and apparently cocked it up simply because I didn't exhibit my listening skills (despite, as I was coached, being the whiteboard monkey in the group exercise).

I was devastated - I had felt challenged by the recruitment process and was excited at the prospect of working there. Somehow now I feel a little better about taking a different path in life. :)
In Search of Lost Time by Marcel Proust
Brilliant post.

Wouldn't it be something if the frantic term-sheet-chasing energy we have in StartupLand could be applied to the world's truly interesting problems?

There are people working on things like this (myself included) -- the problem is that many of the "real problems" out there, the ones that are really worth solving, don't have easy economic arguments. Dollars/euros/RMB are a rather unidimensional metric for value, and what the economy values and what humans value don't generally match up very well.

It's challenge enough getting potential investors to see the ROI in your webapp with well-known paths to monetization - try making a case for a project with social ROI, and very little economic return in any reasonable timeframe (by our short human attention span standards).

I would love to see (and be part of) a broader solution to this.
Yeah I don't think it's impossible to build a bomb that big, as far as I understand it, no one felt like building bigger bombs than tsar bomba because it becomes useless, if I'm not mistaken after 400 megaton or so, most of the energy will just be sent to space.

From the Tsar Bomba article on wikipedia: "Since 50 Mt is 2.1×1017 joules, the average power produced during the entire fission-fusion process, lasting around 39 nanoseconds[citation needed], was about 5.4×1024 watts or 5.4 yottawatts (5.4 septillion watts). This is equivalent to approximately 1.4% of the power output of the Sun.[8]"

That's a lot of power right there. Now to harness that :)

http://en.wikipedia.org/wiki/Tsar_Bomba
same goes for gold. proof of work systems are unintuitive.

the value is determined by average investor time window and whether or not the network is growing slower or faster than a certain rate determined by that time window.

people buy gold with the intention of later selling it to someone who also wants to buy it so they can sell it later. why does anyone bother? because there is demand for transporting value over time. gold supply is low, the investment window is long, and the number of people who wish to store value for a later date is increasing.

the investment window for bitcoin is unknown.
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But aren't security companies supposed to be in the business of reducing the time, effort and focus away from products, sales and cash that's required to set up proper standards and controls?

Shouldn't they be able to prove their own concepts internally?
>Handsets have been moving in this direction for 3+ years now.

And iTools is 11 years old. Don't believe the popular iTools/dotMac/MobileMe is crap argument either, iDisk was badass when it debuted.

And despite all the press regarding MobileMe's launch, the syncing actually works really well too. You can image a machine, plug in your AppleID, and within a few minutes - all of your stuff (including individual app preferences, wallpapers, Dock icons, etc.) show up. Restart and launch Migration Assistant on a gig network, and within an hour or so you can completely mirror entire workstations. It even copies Photoshop registration and *nix config files.

iCloud is simply the continuation of a vision Apple has been working on for more than a decade.

:)
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Ubuntu will automatically detect and configure your network connections with Network Manager. Should the automatic configuration either fail or be incomplete for some reason, you can also use Network Manager to perform a manual configuration.....
Have you ever used instagr.am? The appeal has nothing to do with twitter integration.
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I think you make a good point in the foot print area, but isn't 2100 pretty close in human terms? We already have CNC machines, 3D printers, automated semi-conductor factories, etc. I for one would be very impressed if we could make a fully self replicating colony & factory in the next 90 years.

Also if you were hitchhiking you would need a massively plentiful source of fuel in the target environment because it doesn't have the sun pumping energy into it.
Totally agreed, Chuck.

Advertising broadly for a co-founder is like running an ad that says: BRIDE NEEDED FOR IMMEDIATE BABY PRODUCTION. You might get somebody eventually, but I doubt it will be the caliber of person you want.

I found my cofounder after 3 months of energetically working my personal network. I corresponded with maybe 200 people and met at least 25 in person. If I was going to be spending the next 5-10 years working with somebody, I wanted to be happy with my choice. And I sure am!
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How? You handed me a black box. You wrote some code, and you fed it some data, and you made some prediction, and all I really have is your word for it that your prediction worked, but I sure can't do anything with it. I don't know what it is or how it works, how to extend it, how to build on it, anything.

That's not science by any useful definition of the term.
The networking stuff might be a good exercise but doesn't seem exceedingly practical. Build a shopping cart, Reddit clone, blog, forums or other big category web app in a framework like Web2py. Doa payment integration, Facebook integration, Oauth, NoSQL DB, GAE, etc. Make sure to use version control and try using Fabric or some other deployment tool.
in addition of you adding more stores. why dont you create a pay pal button type thing that allows developers to accept bitcoins.

click HERE to buy in dollars. and HERE to buy in bitcoins
Yes, it is dense, and difficult in parts - but take your time. It took me a long time and several attempts too - but was well worth it. I still go back and read sections again to get a better understanding of some of the concepts. It is very unique and original synthesis of many diverse topics weaved together - logic, computer science, genetics, philosophy, intelligence and consciousness - around a central idea. The central idea is about self-reference and strange loops - as in logic with Godel's theorem, in music - as in Bach's fugues which curl and twist, and Escher - whose drawings such as two hands drawing each other - capture the surreal nature of these strange loops. If you are a programmer, or ever had an interest in Artificial Intelligence this book presents some compelling ideas on how intelligence or even consciousness may emerge out of these strange loops. Even if you are not a programmer, this book will change the way you think about thinking!
I was "forced" to read The Hitchhiker's Guide to the Galaxy in school, and it's still my favorite, forced or not. One of the best parts about that school.
He makes specific arguments regarding the time and energy requirements of interplanetary and interstellar travel. You don't address those. What you do say is too vague for me to figure out exactly what you mean.
For individual orders by the end user, there really isn't that much more. Most of the additional costs such as import duties are typically the responsibility of the receiver.
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Volatility is not a real big issue because we can quickly move bitcoin into USD. If a customer sends bitcoin and wants to cancel before the order is placed, then there is no problem. We will just refund them. Customer always comes first.
There have been a decent number of them recently. Facebook had also previously said that the talent acquisitions are working for them and they plan to keep doing them.
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At my last company (in San Francisco), we had a (founding) CTO based in Paris and a lead engineer periodically in Boston and it actually worked out fine. However I generally would not recommend it. Some companies can pull it off like 37 Signals or WordPress but they usually have grown up that way. I would say that if you like the company and are good, you should try to arrange some sort of lead engineer role where you can work on some of the pressing tasks the company needs as well as some projects that sometimes make better sense for an external solo engineer to complete.
Quantum entanglement, zero point energy, just to name a few things. While I agree these technologies might not be viable for a while, saying we are never going to leave the solar system is fairly short sighted. We always find a way :)
Having bootstrapped and built a successful ultra low latency trading operation from start to finish, I can assure you that in this space the star is the technology. In other forms of HFT, such as statistical arbitrage, the traders are the stars. But my understanding is that the question specifically regarded low latency trading.

To give an example, a whole cohort of traders used a simple lead-lag signal between futures and equities. Up until mid 2009, it was possible to consistently make money merely by waiting for futures to move, sending the information down from chicago (where the CME sits) to new jersey (most of the equities exchanges are housed in new jersey) and trading the relevant stocks. At the time, a popular trade regarded ES (the on-the-run emini s&p 500 futures contract) and SPY (the s&p 500 depositary receipts, designed to replicate the daily returns of the S&P 500). Here, everyone and their mothers knew that this relationship existed, and this relationship was published in various papers, both academic and professional. In this context, the "trader" who brings the idea isn't really adding any value to the process. The success of the trade was wholly determined by the performance of the platform.

In a large HFT, the management cleverly structure the relationships so that the technology staff is lopped together with support and told that the traders bring value. This is intentional: there are numerous traders out there now who still believe they have value-add, when by now all of the tricks have been spilled.

The quoted estimate is averaged over a year of actual expenses, whereby relationships with clearing brokers and exchanges were set up (bypassing external vendors)

"We had access to all kinds of advantages in this regard that normal ccompanies wouldn't get." <-- that makes it sound like the tools to actually do ultra low latency trading are out of the reach of most people, and in reality they aren't. A competent person can build the business from 100K of personal savings :)
"Yes, and the definition of a measurable map is a function between two measure spaces which takes measurable sets to measurable sets, i.e.: a structure-preserving map between measure spaces."

That's not at all what I wrote. You really don't even know how to read a definition in math, do you? Do you know any math at all?

You are wrong again; a counterexample is trivial to construct.

Here you have no need to defend your knowledge of math in general, just on one point, the definition of a random variable.

You are seriously, flatly wrong mathematically. Name calling and refusing to read won't make your nonsense correct.

Enjoy looking like a fool before the world of computing, forever.
> I am considering providing hacker recruiting services specifically for startups

Okay.

> So, my question is ... how do early stage startups recruit hackers?

Shouldn't you know that?

Seriously - if you don't know how people do it now, what makes this a good biz for you to get into?