skysight-inc/HackerNews huggingface dataset:
If you're referring to LuaJIT 1 vs 2, the big differences are that LuaJIT 2 has a trace-tree JIT, and interpreters for each platform written in assembly. The improvement in performance is significant: LuaJIT2's interpreter alone is faster than LuaJIT1's JIT.

It's hard to compare LuaJIT1 and 2, since LuaJIT2 is the most advanced JIT for a dynamically-typed language on the planet. The performance it can achieve with zero type annotations still blows me away.
Are there any other current benchmarks around for LuaJIT vs for instance java?
It all depends on how much salary you draw.

W = opportunity cost value of other people's labor (i.e. if their time is worth $20/hour and they will have to put in 1,000 hours to earn their share(s), W = $20,000)

X = value of the idea with nobody to implement it (converges to 0).

Y = value of the investor's cash investment

Z = opportunity cost value of your labor (i.e. if your time is worth $50/hour and you will have to put in 1,000 hours to earn your share at future time t, Z = $50,000)

Your fair equity is ( Z - salary ) / ( W + X + Y + Z ).

Many nontech people get pretty upset when you come up with this formula and turn the crank- they think their time is worth more, their idea is worth more, and your time is worth less. (Or they didn't think, they guessed or willed it to be different).

Please try the formula approach and let us know how coming at it with a formula (where you fill in the numbers together) did for your negotiations.
More importantly, aptitude is known to be broken. Aptitude's resolver never caught up with Ubuntu's multiarch transition, and will erroneously conclude that many things are uninstallable (or attempt to "fix" things by uninstalling half the system)
Thanks for the heads up. I think everyone is waiting impatiently to hear back from you guys. Good call on extending the deadline too.

One question though: I have been checking this site every day for any potential questions from YC regarding my product / startup, just by scanning the "new" and "ask" sections for anything that may be related.

Is there a simpler way to spot if there was a question directed at me?

Thanks!
Definitely keep in mind that this thing needs to be connected to a host PC over USB to do anything. You are not actually programming the PIC and then having it do stuff on it's own. The pyMCU folks probably program the PIC in C or BASIC, and you would just be using the provided firmware.
The author posted the original article on 17th Dec 2010 and an update on 11th Dec 2011.

So not sure how this made it to the front page of HN. Not surprised the author doesn't address the response.
The same vulnerability that would exist in the hash calculator could exist in the hash calculator locally to induce data loss, theft, etc. The same security challenges that face a hash algorithm in a browser affect encryption ability as well. Presumably the decryption happens in the browser as well which would preclude your post.
Oh, I know, I was just being flip.
No. This thing doesn't do anything of use without a host PC connected over USB to control it.
I'd love to hear some comments in response to this as well.

Based on what you described, it sounds like you're coming in at founder level, so you should be a co-founder and have equity on par with the other founders.
Most of that can be done with Google Voice.
Agree. The original post is actually from from Dec 2010 and an update on Dec 2011!
If ASICs are shipped in the next couple of months, then very soon GPU mining will do as little as CPU mining does today.
well obviously people are interested in it. Can't fault you for trying to make a little scratch
I see your point but in my opinion, requests is quite different from SQLAlchemy, Flask and fabric. I wouldn't put them at the same level.
Thanks jlf!

You guys at #emacs have helped this happen. An awesome community.
Btw your font choice looks horrible on Windows (IE9, Chrome, FF): http://d.pr/i/qK9i

There has been a growing number of not-tested-on-Windows sites which need some serious testing on modern Windows machines because the fonts look really bad.
McAfee founder John McAfee sought for questioning in Belize homicide
Most people would have to check an ASCII table to know what that range is, though.
Hey got an off-topic question regarding JIRA: is it possible to have a test-account to develop 3rd-party software for their on-demand (studio) web-app? and is there _THE_ stable developer document I can read + use to extend JIRA? (Their KB/Wiki is rather convoluted).

Once in a while I'd like to implement a plugin or something for my current workplace internally but I tend to get overwhelmed by the sheer amount of documentation and various versions of JIRA.

Thanks!
Death by Million Cubes
[BMC] GreenWindows: Clearer Vision, Greener Living
Careful, you might hurt some people's feelings. Has anyone done a systematic comparison of LuaJIT's performance with PyPy's?
I'd say 99designs has made some mis-steps here. They should aim to be open and honest about the cut they are taking. Though I agree 30% is high, let's not forget that is the same amount that App stores take from apps and in app purchases. I fear that 30% is the new normal for service fees.

I checked out crowdSpring (99designs competitor), but couldn't find how much they're taking in a service fee either.

I'd like to know how long ago they made these changes, before judging if they are purposefully being shady. If it is a recent change and parts of the site just haven't caught up yet, I'd say they may have a problem, but as a start-up I'm willing to cut them a bit of slack.
I've never been to quora before today. I've always understood it to be a general purpose Q&A site. Given all the chatter in this thread about it, I decided to go there to see what it's about.

I found this page for navigating the subject material: https://www.quora.com/directory/

Is it just me, or is this a rather opaque view of the content? For example, the "B" section for topics doesn't have "bicycles", but it does have "Bizplay - Black Magic Design". I feel like I'm taking crazy pills.
Thanks for pointing that out.

I assure you we are not trying to be shady, just trying to provide discount electronics
The main risk in my mind was that it was some sort of control sequence for a feature I hadn't memorized.

I know there's some syntax I can use to create a zero width negative look behind recursive greedy named capture group back reference. Perhaps hyphen-tilde triggers something like that.
If you want to write production embedded code, you have two choices: C and assembly. That's the result of my extensive research, anyway: gcj doesn't work, the AVR forth implementation uses too much flash and can brick your chip at runtime (for other reasons), etc.
How I lost my Groupon bet
how many applications did you receive?
It's all free! Paying is only for the Simulink diff features. Time for me to make that more clear...
There was a really nice example of a mistake applying ML to currency exchange rate forecasting given in the "Data Snooping" section of Yaser Abu-Mostafa's "Learning from Data" course at Caltech (http://work.caltech.edu/telecourse.html).

Here's the relevant lecture: http://work.caltech.edu/library/173.html (the currency exchange example starts around 51:38).
Early, Facehugger-Filled Prometheus Script Leaks Online
Hugo Sarrazin of McKinsey: Social is an Enterprise Feature
Friend-to-friend
Although this isn't the act under which the guy was arrested, it is another example of ...vague and thoughtcrimey law in the UK.

http://reformsection5.org.uk/

Also, and probably importantly, there's a large public (and legal - see the various judicial outcomes) reaction against the stupidity of laws like this.
Poorly titled post, is this a Flora announcement or just a link to the product in general? Reading the page, the content fails to clearly address why this is better than their previous gen "wearable" board, the Lilypad. From what I could find, this board has greater specs.

Grumbles aside, glad to see the Arduino ecosystem thriving. No doubt this will surface in some Kickstarter projects in the near future (if it hasn't already).
When then Programming Language Shootout use to include LuaJIT, it had a benchmark against Java.

If you want to see just LuaJIT vs Lua, [1] is a good comparison.

The reason why I liked the inclusion of LuaJIT in the Programming Language Shootout was that it compared LuaJIT to other language implementations not just on speed, but memory consumption and lines of code. All of which, LuaJIT typically dominated.

[1] http://luajit.org/performance_x86.html
If I understand correctly, it's actually not the burning of a poppy that's the crime, but (in this case) the posting of it online with associated commentary. I don't know if that's better, worse, or more of the same.
Btw., does anyone knows if there is some similar tool for iOS? (Doesn't matter if I need root access...)
Credit card, yes. iPhone, no.
Kickstarter approach to mobile apps
Massachusetts Golf Courses Tee Times and Discounts
When looking for a job at a startup…
In Seattle? Check out The Chaos Collective's Craft/Hack Night
Ping of death was +++ath0 which causes a dialup modem to hang up.

I have no idea why most modems did this. But by god it was a lot of fun on IRC when I was 14 or so. I still remember the hex string for +++ath0 you'd need to pass into 'ping -p', haha..
Checkers or Chess? Applications for Sydney-based Startmate Close Sunday
How to submit a great pull request
Buy Bitcoin UK
Hacks/Products - A discussion on responsibility
> I suppose a single regex can be both "favorite" and "worst" at the same time...

We definitely aren't the only ones who appreciate horrible things.

INTERCAL comes to mind here.
PHB: Pointy Haired Boss
Absolutely. I made the same considerations before making this post. But, notice that I'm not criticizing them for the cut they are taking. I am moreso upset about the notion that they are actively trying to HIDE this from their users. If they were more upfront about the costs, then I have nothing to complain about. But, that's not the case. I had to find out how much of a cut they were taking by responding to angry designers wondering why my prize was so low :S
Interesting. My Android phone, which I use only for development and testing tons of apps, has multiple apps that are essentially blatant malware. They send push notifications that appear to be from some ad network that click through to a shady website that's trying to get me to install some other Android app.
If this is your first occupation, you have to occupy.

Consider your profession. (At least what I can gather from https://github.com/lazerwalker, correct me if I'm wrong)

You develop apps, design tangible UIs (which I love BTW, Reactable FTW) and write libraries.

Did you get good / better at these endeavours merely by pure observation? Sure you may have acquired the jargon and general idea of process by observation alone. But it was by consistant, relentless practical experimentation within a feedback loop of your peers and clients which actually got you to where you are today.

The same goes for Occupy. You more or less are approaching the asymptote of occupational knowledge by mere observation. And, thankfully, you're still interested. You can imagine the practical applications. You just need to see it for yourself first.

So go ahead and type "occupy [your nearest city]" into your favourite search engine and see what they're up to.

Seek and you shall find :)
"Perhaps one minor bonus to HackerSlide for now is anyone can take the data collected."

Indeed, may I make a suggestion here:

1) Why not make a datadump so people wouldn't need to scrape ~800*24 json files individually?

2) OP ought to load this data into his version so the timeline goes back further

3) It seems quite a few people get the urge to tinker like this with HN, I'm sure pg doesn't mind the scraping, but it strikes me as vastly more efficient if some sort of shared resource was setup and perhaps added to the footer, in the vain of HNsearch, so people don't waste time get crawling data setup.

I'm sure somebody else has a dataset just like yours that goes back further still. :)

Also, thank you for making this and OP for making his. Fun.
To be more precise, JITs on top of JITs. :)

We have both an interpreter for ActionScript bytecode as well as a compiler that compiles that bytecode method-at-a-time to JavaScript using a restructuring approach like emscripten's relooper.

Disclaimer: I work on Shumway.
That must be a lot of comfort to people who have had their house washed away.
Unfortunately we don't have an equivalent of the First Amendment in the UK, so people aren't quite as used to Free Speech being thought of as an unalienable right.

Whilst generally speech is fairly free, and we have a pretty diverse media, there have been numerous laws impeaching upon Free Speech, particularly recently, generally in terms of avoiding obscenity and protecting children. It's a worrying trend, and one I wish we could revert.

I've been wondering a lot recently what the best way is that I can help campaign against this - it's my biggest bugbear with UK politics currently, far more than the economy or other social issues. Any suggestions?
Your Facebook newsfeed, unfiltered
I wondered this too, and was worried I'd miss questions. I poked around though and found this on quora: http://b.qr.ae/UDFIqn

Apparently questions are not super common.
There's not much innuendo involved here. The article pretty directly links to MDVP. Go look it up on Erowid; it's not particularly inert stuff.
/salivate

Any idea what it will cost when released? Rounded to the nearest grand?
Space smells like seared steak, hot metal, astronauts report
Thanks for that. I actually develop on Linux, but either way Windows is definitely most of the market. I'll shop around and see what I can find.
Highly recommend you click through to the drug forum posts (he's "stuffmonger").
I have known people in NYC who kept chickens. It didn't seem like it caused a problem for anyone. But if they ended up with a rooster, that was a big issue because they are banned.
The paper focuses on a number of practical mistakes but overlooks some higher-level ones that I think are also important:

- Most ML algorithms perform well when there is some underlying phenomenon whose characteristics are being statistically inferred by the model. However, the stock market is now essentially a large network of computers trying to model one another. You can imagine how this might break some of the underlying assumptions that good ML results rely upon. We can see the results of this in the increasing frequency of "flash crashes" caused by over-leveraged quant hedge funds all tripping over sell triggers and/or getting margin calls at the same time.

- In practice, asset class/trading strategy correlations tend to change dramatically over time. Nowadays we talk about the market being 'risk-on' or 'risk-off' modes, since we're used to seeing market-wide selloffs and buyins. Your ML model can only do so much if the entire market is selling everything, unless you're going to dip your toes in derivatives or short selling to which I say: good luck! :)

- A major, major issue is execution. You can have the greatest and most accurate model in the world, but actually trading it is another beast entirely. Bid/ask spreads and market movements from your trading, particularly if you are dealing with a non-trivial amount of money or trading securities that have less than ideal liquidity, is usually going to eat up any alpha you might have. In my own backtests of fairly straightforward trading algorithms even a minor 0.05% spread on bid-ask spreads for a weekly trading algorithm can eat your lunch, nevermind if you're planning on doing intra-day trading or trading anything other than the most popular funds/stocks.

- Beyond any of these risks, you're going to have to inevitably suffer through downdrafts. I don't know about you, but watching my money disappear as it's being controlled by a trading algorithm/model that is subject to all kinds of mistakes and bugs is well beyond my own intestinal fortitude.
I think you're forgetting the gold standard in dynamic languages from the 80s: Common Lisp. It's still around, and it's still faster than almost every other dynamically typed language out there.

http://shootout.alioth.debian.org/u64/benchmark.php?test=all...

Half of the benchmarks are less than a factor of 2x slower than C, which is better than even GHC can do for Haskell.

Edit: Disclaimer: http://shootout.alioth.debian.org/dont-jump-to-conclusions.p...
David Graeber offers good explanations: (http://www.aljazeera.com/indepth/opinion/2011/11/20111128728...)
After getting comfortable with git, using P4 is downright painful.
Everyone agrees with us on climate change — especially when we're wrong
API Evangelist Development Partner, Concentric Sky
Since it was already answered, I'll just link there:

http://news.ycombinator.com/item?id=4772467

It is an configurable item for when you configure systemd.
3 Tips For Writing Better Backbone Views
1. Don’t Access Variables Out Of The View Scope
2. Write The Template Inline
3. Render UI Upon Data Change, Not User Interaction
On Verizon you can block up to five numbers for free. For an extra $5 a month you can block up to twenty numbers and get a bit finer control.
Secession petitions flood White House website
Apple fires up its version of Google’s "20% time"
I'm really looking forward to this.

Pricing and power consumption is competitive with nVidia (and substantially cheaper if you compare to the Tesla boards), and the x64 instruction set and a normal memory model is actually a really big deal.

Furthermore, pretty much any algorithm designed for CUDA/GPUs also runs faster on regular Intel processors, but the reverse is not true.

It's hard to see how this isn't going to be successful for Intel.
Way to shoot the messenger. It's nature you should be upset with; as it is very much upset with you.

All those houses of sticks built on shifting sands.

All those priceless, irreplaceable material possessions.

What a tragedy!

Didn't the three little pigs teach you anything?
How to Get Your Wife in the Mood For Sex - 7 Action Steps
If you find yourself longing for greater intimacy and more sex with your wife, you are not alone. A lot of men feel this way as they struggle to figure out why their wife seems to have lost her passion.
previously : http://news.ycombinator.com/item?id=2598026

https://github.com/mindcrime/pgbot
If you're interested in Gnash you might be interested in

http://en.wikipedia.org/wiki/Lightspark

"Lightspark is a free and open source SWF player"

Still in beta.
20 Essential Books About the Next Step in Human Evolution
More importantly, what would PG's chatbot look like?
The meaning of "FUD" slowly morphed to "saying bad things about software I like" a few years back.
His software murdered my computer too.
No, not really. I'd written the two Lisp books, and people liked those. Not a lot of people, but they were people whose opinions I cared about. Actually Viaweb felt like more of a compromise than the way I'd been living before, because it was something I was doing mostly for money.
What's in the GitHub repo is entirely it - I'm just working on a blog post to announce it, so you can get started right now.
why am I reading this on HN

Because enough people voted it up within a set time window.
We (Ninja Blocks) found the Startmate program invaluable!

If you're thinking of creating a startup, definitely consider putting an application in for Startmate.

Cheers,

Marcus
Best startup accelerator: Still YC?
> The article pretty directly links to MDVP. Go look it up on Erowid

My point is that this is a rather irresponsible journalistic statement. If they want to portray MDVP as a dangerous substance, that's a pretty terrible comparison that fails to get the point across to anybody who knows a thing or two about psychoactive substances.
Beginners notes on Puppet
Communicate Your API Roadmap with Github
Mac productivity apps that make our life easier
yes! you said this way better than I did.

also to your point of chain of command - i used to work as a forest fire fighter and I can tell you that chain of command is definitely a contentious issue. It really does need to be a give and take where you can draw on the macro advantages of someone higher up but rely on actionable decisions from people on the front lines.
That means that the electoral system will serve to deny everyone the possibility of having a meaningful role in selecting the President, rather than just denying it to most of us as happens now.

There's still the Democratic primaries...

It's not the electoral system's fault that the Republicans can't field a candidate that inspires the goodwill that Obama did. Or that they're rapidly losing touch with reality. Or that they've squandered the nation's trust with cold strategizing like the Southern strategy.
For what it's worth I didn't read it as a meme. It's not exactly an uncommon phrasing and there's no ackbar head stuck on.
Will you support Romania as well?
Kim Dotcom to relaunch Mega at Mega.co.nz
Great, so now when I am contemplating using, and paying for, your web app or service, I need to not only think about the possibility that you'll "pivot" or just go out of business, but also that you'll decide to "prune" the product that I'm using.
That's typically enough to control a company. You don't have absolute control, but organizations with as little as 5% have an outsized influence. I'm not really sure why that is, but back when I was doing mutual funds the fund managers would say companies were "controlled by" as stockholder with a relatively small number of shares.

Sometimes it really is enough for absolute control, since not all shares are voting shares. The NYT is a good example of this.
Something tells me there is an MC Hammer joke in here regarding being 2.0-Lua-Jit-To-Quit, but I'm not sure I can find the phrasing to excite the level of humor I was hoping for...

Oh well, congrats on the release anyway! :)
I've seen this happen to other sites, something angers the Google algo and organic traffic falls off a cliff.

History seems to bear out that SO correctly identified the source of the "problem", and SO is such a valuable resource that I'd rather it be Google-visible over passing pagerank.

This is the problem when you have a single player dominating the search space with an opaque algo and a very limited appeals process.
> 3. Injected tweets.

They are already doing this
Considering how much their startups can raise, even before finishing the program, I ll say yes.
This code does do 'safety 0', which make lisp much closer to C (no array out-of-bounds checks, no int overflow checks among others).

There is no need for LuaJIT to generate completely unsafe code to achieve it's performance.
If you want to get something done you have to start off by putting in the work, then as other people see you being effective they join in and contribute their own energy and ideas.

In other words, a flat hierarchy of self-starters? Heck, if you consider cleaning up the streets of Long Island to be an open-plan office, it's not much different than half the offices in SOMA.
But .Net is not open source, so you don't have information about the internal classes used in it.

Anyways, we are shaming Java here because of one obviously automatically generated internal class.
Building relationships is a huge part for sure, but contacting dev's directly is bad form and a good way to get on the spam list.

Please don't listen to this guy, it's very bad advice
Ever heard of a "green developer"? Here's my take.
A good developer is energy conscious. A good developer understands the impact he has on the environment around him. A good developer is able to take all these things and use them to make a positive impact in his universe. A good developer is a green developer.
Good Tax Law Book?
Can anyone recommend a good tax law book? I need one that is a good introductory text for someone without a strong background in law.