skysight-inc/HackerNews huggingface dataset:
You don't understand business if you think companies are losing money when you use a coupon.
The actual number for the hyperloop capsule is 15,000 - 26,000 kg. Still much less than the TGV, obviously.
Helium is extremely expensive, rare and likely to escape Earth's atmosphere, but not reactive under any conditions I know of. Hydrogen, on the other hand, is extremely flammable.
I appreciate the honest answer. One of the powers of Perl is that you can sit down at almost any system and type "perl -v" at the command line and get something. How has the penetration been for this to return a v6?
When people stop down-voting your comments or the quality is such that they start voting them up ;) then you will reach a certain score (changes over time) and magically you will have this awesome power to down-vote the comment contributions of others (please use sparingly).
All Apple Developer Center services are now back online
The numbers don't make sense to me. "It depends on how strong the sun is but it's more or less 40 to 60 watts." <- I hope that's for the whole roof we see in the picture, not for a single bottle. What's the insolation of a single bottle top anyway? (Unless, of course, they're talking about your grandma's old-fashioned incandescent light bulbs.)
The fact that this has to happen to have content rise to the top is a bug, and it needs to be fixed. It's understandable that many people won't visit the "new" page, and that most consumers don't upvote, but that doesn't mean that something shouldn't be done about it. Maybe 10% of posts on the front page (random placement) should be new content being given a chance to be voted up. Maybe those submissions could also be marked in some way, so it's clear why they are shown (but only if doing so won't cause people to ignore those submissions).
Not to say that their argument is sufficient to abandon jQuery, but it looks like what they're offering is working directly with the DOM, instead of jQuery's wrapper. Again, I can't say I'm convinced, but at the same time, at some point, won't it be time to move to the native DOM? jQuery itself is abandoning support for old IEs, and once that happens (are they really going to still be supporting 1.9 in five years?) then the main reason to use jQuery, cross browser compatibility, will be gone, and it will be time to reassess what should be the standard JS standard library.

Edit: on the other hand, I feel like DOM traversal is becoming a smaller and smaller part of the JS I write. Maybe we'll find in five years that we don't need a DOM wrapper at all.
There really isn't an either/or approach here. The HSR currently under construction is designed to ferry people between moderately sized, moderately spaced cities at a moderate pace (the fact there's a monumental price involved in its construction is secondary). The hyperloop is designed to ferry people between two huge cities (if you count Northridge as being LA, anyway) at a very fast pace.

They may have spun the HSR as a superior option to flying or driving but it has applications, particularly if you live in places like Lancaster, Bakersfield, Merced, or Palo Alto. The hyperloop would do nothing for these intermediate communities.

That said, I definitely prefer the hyperloop if the only criterion is cost-effectiveness. Just because something shinier comes along (not even a test track yet) doesn't mean we should mothball the other thing.
> He advised that factory workers should "select and produce shapes and colours that users like".

Because the people of North Korea will love the shapes and colors of the phones, and not the possibility of it bringing them out of poverty, right?
Which is just like `document.querySelectorAll('body section .identity')` which also works in IE8+, FF, Chrome.
When a startup grants stock options to its key people...83(b) has no bearing on any of them except for one special case. If options are granted to key people who are given the right to exercise them early...

http://www.grellas.com/faq_business_startup_004.html
As a fellow mech eng, what startup environment are you involved in and is it utilising your mech skillset or something else, eg: programming abilities?
Expecting complete privacy and anonymity from a website that you give your credit card info, your full name, your address makes zero sense
Really? You must not do much online shopping. There is tons of times there isn't any coupon code that applies to what I'm buying and then I just feel kinda cheated. Just a little. Then there's tons of times there is no coupons at all for the site, maybe just like $10 off your $100 purchase of <very specific product> and that's it.
There's no fructose in white rice and fructose has virtually no GI (GI being a measure of glucose). Table sugar may have the same glucose load as white rice, but by weight it contains an equal amount of fructose thats headed straight to the liver.
But it's not strongly enforced.

Actually it'd be very interesting if it was. A lot of 20-somethings in New York get more than that from their families.

Enforcement could put an end to many unpaid intern jobs.
Anecdotal: I was getting soreness in my finger joints, and about that time went to a presentation talking about repetitive motion causing arthritis for a lot of typists. It was pretty grisly. Padding in finger joints wears down, and little chips of bone start breaking off, causing pain from bone chips and realignment of fingers to fit the new bone faces. Padding restores with rest, so it helps a lot to catch it early.

I bought a couple nice mechanical keyboards with Cherry switches (red and brown). I type very lightly on them, seldom bottoming out the keys. Finger troubles went away.
Nice job, but I thought it had a peculiar choice of music. It doesn't seem to fit the demographic or setting shown in the video.
But you only get 15 tabs.
Well, I was going to comment to exactly this effect, but Jeremy's already done it.

I'll add that Ben Vinegar's talk about how Disqus uses Backbone is also interesting, especially as a case study for a widely deployed app.

Again, Kristofer's & Mark's talks are really quite good. You should definitely watch them :)
Exactly. The early announcements, the O'Reilly book etc. all combined to make me want to stop Perl 5 work and wait a bit for Perl 6 to come out.

I was fully expecting to sit down at a machine and type "perl6" instead of "perl" to invoke early versions of the language. I was even willing to deal with semantics changes in the language for a while till that settled down.

But 5 years is a long time to wait before implementation even started and 13 years is even worse and still not really be able to sit down at a terminal and "perl6 -v".
Would it be more ethical to not read the article, warn others of the modal and refuse the site further traffic instead of copy-pasting copyrighted fruit of someone's labour?
Template Method Design Pattern in Java
> Trying to compare the actual cost of actual projects with the first projected cost of an ideal, untested project is a bit silly, don't you think?

Not really. I would never estimate a six billion dollar cost for anything involving placing massive pylons on the center of the Golden State highway for four hundred miles.

It's the difference between reality and wishful thinking.

Look, I already said that I'd rather spend the sixty billion allocated for the bullshit high speed train on the Hyperloop. In other words, I am not saying we cannot build it. I am saying it will cost far more, take longer and be far more difficult (not technologically but unions, special interest groups and plain politics) than stated in the pdf.
What you need to push meditation into mini moments: Corporate power
On the Beijing subway there are adverts on LED displays on the tunnel walls that move along with the train, keeping pace outside the windows.
Steve Jobs’ friend Larry Ellison: Apple without Steve is doomed
Want Better Food? Get Rid of Tipping
Technical reasons? There are none. This is customer/sales driven, normal (non-technical and the majority) customers don't want to bother with technical bandwidth/transfer non-sense.
Once equilibrium is reached, we can expect hashing rates to bottom out. A similar rush will occur over time as the cadence of Bitcoin hashing technologies approaches more regularity, not unlike how new generations of CPUs and GPUs are released on a timely and predictable basis.

This will be the pattern of Bitcoin hashing -- waxing and waning with each new generation of ASICs and the lull between each release.

One has to wonder what will happen to all the surplus ASIC hardware as well-financed miners regularly upgrade their hashing infrastructure.
But I, well how do I put it, have to smile a little bit about his actions.

By the way, learned yet more about these things in this article and the venturebeat-link.
This illustrates a case where coupon codes are working as they are supposed to - if it's too much of a pain in the ass for you to Google, the retailer will be happy for you to pay the higher price.

Price Discrimination 101.
I second this. There have been plenty of studies that show consumers love the idea of savings, even if they're just an illusion. People would rather pay $20 for a $25 item knowing they saved $5 rather than just paying $20 with no savings.
I'd also read that it was upended by the company supplying delivery vans to the postal service: General Motors.

They could sling a package across Manhattan in minutes, but to drive there, then as now, takes a lot longer.
Tax Evaders (Flash Game)
It also means that sights with more than 4-5 things I have to unblock go completely unread as I am unwilling to keep going through them to find the non trash sources.
My chromebook can do this now, patiently waiting for my chrome browser on my to do it to...
I don't see how an average person can lose if Musk attempts to build something for his own money. And I don't understand why does it bother you.
Actually, that is more difficult - trying to explain an alternative workflow to a customer over the phone is not nearly as easy as it sounds. "Enter this coupon code in the field you see on your screen," is much easier than "Ok, type in this new URL exactly, now, once you've done that, add this to your shopping cart, now go to checkout..."

I've had to watch a lot of this sort of thing happen, and customers "understand" coupon codes natively at this point - they require practically no instruction. Getting the customer through the transaction as quickly as possible is one of the prime desires for any e-commerce site that also takes phone orders, and coupon codes have been, in my experience, most effective for that.

Now, if you want to start a trend of re-training customers to expect specialized URLs they use before entering checkout -- then I'll be more than happy to switch over to that once customers expect it.

However, I feel there's a sort of paradox here: Providing discounts to new customers helps create new transactions. The more steps required to complete the transaction, the more like the customer is to abandon the transaction. If a coupon code causes customers without one to be more likely to abandon then it makes sense to require a separate step from the normal checkout workflow to use it, thereby increasing the rate of abandoned transactions.
After the second hurdle, in Firefox, View/Page Style/No Style, then scroll down and the article's there.
Show HN: Tutoring startup in Perth, Australia
I recently launched a local tutoring startup with a friend of mine, learning rails as I went. We'd love some feedback if you have any.
Yey for the Lovecast!
Have you ever gone to the grocer and been stopped by the checker just before you hand them or swipe your credit card to ask if you're sure you don't have any coupons for any of the items in your cart?

If you have the checker might have grabbed a copy of the Sunday insert they had sitting there and scanned the $1 off coupon for that one item you happened to pick up but didn't know was actually on sale, or 95% of the time the checker doesn't even bother you about such things. By offering a coupon code box on your checkout page, you're effectively saying "Hey, we might have put a coupon in last Sunday's newspaper, but obviously you aren't special enough to have received it and we aren't going to be nice by offering it to everyone to gain customer loyalty."

If you want to do an affiliate-type discount for a single item, do it through URL parameters stored into a cookie and consumed at checkout. If you want to do a Sunday-coupon-type discount for anyone willing to go find a coupon, offer it to everyone: "Do you have any coupons? Our latest promotions can be found at ..."

Edit: and if doing a Sunday-type coupon, have the box be conditionally shown. If your current promotion is for 10% off the purchase of a Foo widget, don't show it when the customer only has Bar sprockets in their cart. You're just losing conversion at that point.
Another hyperbolic article headline that the article's body doesn't -- and can't -- support.
That would likely combat the problem of people quitting the checkout process because they saw a coupon box and hunted for a code. However as a method of tracking referrals I'd expect its usefulness to be close to zero, as it ostensibly is still a coupon, and will appear on the websites that offer them as such.
Announcing Redpoint’s $16M Series A Investment in Looker
Show HN: Redistats - Web stats using Redis
Also: there's a rap - http://www.youtube.com/watch?v=Sqt1RdrYekc
Requires log in for me.
An alternative approach would be to create a 'claim coupon' form and point your couponeers to that so that they may redeem the coupon. The trickier part would be then to keep track of the coupons in a similar fashion to the 'Items in Cart' (either via session based tracking or link it to their account).

This approach would also allow for implementing coupons in different ways (ex. time-based, limited), reduce mental stress by being able to retry codes till you found a valid coupon (some providers allow for coupon codes but no way to verify it's valid) and not distract from the check-out process (it would simply require showing which of the redeemed coupons are applicable to the purchase).

A plus side of this approach is that a coupon is enough to persuade potential buyers to create accounts to keep their coupon (while it's valid - for later use) and thus also reducing friction in the check-out process which should lead to more sales.

I do also now believe the existing 'coupon' implementation is at fault by leaving too much on the table.
Having just seen Pacific Rim this past weekend, I can totally relate to this post.
talking about the US being on borrowed time ... will get you examined a little closer by the spooks.

Well, we all knew that, didn't we?

But these days, if your friend's friend starts talking like that, your own phone calls and email will be paid attention to.
I suspect that people don't trust a merchant-supplied coupon.

A also suspect this is why when you Google "landsend coupons" the #1 site is a UGC coupon-sharing site and #2 is the merchant's own site. By every traditional measure, the merchant's page should outrank the coupon site.

Why would you trust a coupon sharing site more? The merchant has an incentive to only give you some token discount, whereas the "crowd" has no such incentive. So you're more likely to trust the crowd in this scenario.
Interesting. There is a site I shop at a few times a year. They always post the discount codes on the homepage so anyone can use them. It's things like save $X when you spend at least $Y. I wondered why not just automatically discount the sale. Maybe it's something to do with the positive effects of feeling like you got a deal.
That's a pretty neat solution. One thing though, my laptop hasn't got a great screen and when I tried clicking the checkbox the input field that appeared was very very light - my immediate thought was that there's just an apply button. I know this stuff's a bit of a black art, but it might be worth A/B testing a less faint input field?
Chicago had a similar thing: http://en.wikipedia.org/wiki/Chicago_Tunnel_Company
Designers checklist advices
... or your pizza delivery man's other customer.
I would argue that remembering and entering a coupon is just as hard as remembering and entering a sub-directory name in a URL. In fact, finding the coupon code box can sometimes be a pain. It's not always on the first page in the ordering process.
Looks interesting, I will check it out.
RetailMeNot’s 94% Margins Usher In Post-Facebook IPO Glee
I'd say that a coupon code box runs a distant third behind surprise high shipping rates and sites I've never heard of that don't accept third-party payment sites and instead want my credit card info. Nope.
The Republic of Texas would be a good fit. But Southwest Airlines is located here so it would never get through the legislature.
Ok then, let's add problem #4 - Too low a threshold for funding.

That is a problem.
Previous discussion of someone else's rant about this:

https://news.ycombinator.com/item?id=2844369
Let me know what you think. I will listen to your feedback.
The hard part is recognizing imprecise submissions, and people wanting confirmation that the coupon worked.
I wonder if a competitor could grab the sale by purchasing ads against "<Your Company> Coupons" claiming to be 20% cheaper or something.
If they explain the why, they may be justified, but they will still eventually become invalid when the code is changed to do something with a different rationale.

And yes, people should rewrite them when they adjust the code, but like so many other things: In any reasonably large code base it sooner or later gets neglected because the code still runs and passes all tests without it.

If you want "documentation" that will stay up to date, you either need an extremely rigorous development process, which pretty much nobody has, or your documentation needs to be in the form of test cases that will break when the documentation is no longer valid.

I 30+ years of writing code, I've don't think I've ever come across a project of any reasonable size that haven't had substantial comments that were outdated. I would love to see such a beast - it'd be a little bit like encountering a unicorn.
> "In order to make sure the mobile phone frequencies are not being tracked, I would fill up a washbasin with water and put the lid of a rice cooker over my head while I made a phone call.

erm... either you shield all radio at which point, yes, you can't be tracked, but you can't make a phone call either. Or you don't shield the radio in order to make a call, but then you can be tracked.

Where's the flaw in my reasoning?
Could the coupon box "train" customers to jump on deals when offered? Perhaps that is the seller's hope, and that it is about a relationship and revenue stream into the future.

(I'm not saying this "training" is a net win for the seller, but I can see "loyalty" as one of their goals.)
It loaded the article right away for me. Chrome Mac 28.0.1500.95 here with Ghostery and Adblock running.
Been testing the beta out, very very good stat system, will definitely convert from Analytics.
Not actually as farfetched as that sounds. Keep in mind that alternative currencies are actually useful during economic downturns as a buffer to keep things afloat. Until now, such alternative currencies were extremely local: visitors to a place rarely know about its existence and aren't invited to participate.

Bitcoin, on the other hand, has been adopted in tandem with other currencies worldwide and has made international news. It may never succeed in some of its proponents' dreams of replacing fiat currency, but it's certainly visible enough to act as a global alternative currency during recessions.
"A common misconception is that transactional confidence is based on time"

Transactional confidence is based on the probability of someone compromising the network for enough blocks to undo a spend that you've already honored (IE you gave them what they paid for, then they undo the transaction). At 6 blocks, you are assuming that an attacker won't have the computational power to reverse 6 blocks in a row.

When blocks come out every 2 hours, that means you need to find every single block for 12 hours, or essentially control the blockchain for a long time.

When the block rate is down at 5 minutes, you only need to control the network for 30 minutes - you have more chances to get lucky and undo 6 transactions in a row in your 12 hours of purchased computing time.

A halved block rate does not mean you need less computational power, but it does mean that computational power is probably cheaper and 6 blocks worth of power is going to be more affordable.
and then all the test tracks, e.g. the transrapid in germany

... which closed a few years ago :(
"At my company we've tested having the coupon box automatically filled in vs. not automatically filled in and we found that conversions were no higher by automatically filling it in."

What are you filling it in with and what type of discount did the coupon apply to the purchase?

So are you saying that for the purposes of testing you took a loss on the sale in order to see if there was abandonment?
> To be fair, Oakland is a much more sensible location of the initial terminal for any rail system. It's very well-connected to SF, has a complete lack of powerful, moneyed NIMBYs, and it would be easy to punch the line through to SF once it's proven.

The East Bay (and even Oakland specifically) does not have a complete lack of moneyed NIMBYs. There are at least as many of those in the East Bay as in SF and the Peninsula.

And its actually a lot easier to "punch a line through" over land than over the Bay, and existing SF-Oakland transit capacity is fairly well saturated and expensive to expand (because, again, of the Bay).

You could maybe find some non-insane argument that extending Caltrain as conventional rail to San Francisco and running HSR to Oakland makes more sense than HSR to San Francisco and existing conventional rail to Oakland, but I doubt there's much case even for that; in any case, any sane strategy for rail is going to involve a fork with lines running up the Peninsula to SF and up into the East Bay separately.
Considering that most rivers go from the north to the south and the big distances (compared to, say, Japan or Europe), that's logic. Also explains the role of air travel.
Oh, this VP was full of crap, and borderline abusive of his staff. But it leads to great stories.
There is a threshold of 500 (or it was, I suppose it could have changed) karma that a user must have before they have the option of down voting comments.
(I haven't A/B tested this, so I can only rely on intuition and feedback from other people.) I think that the honesty plays a role here. If there's an empty space that says "put a coupon there", people will be looking for a way to fill it, even if they don't have a coupon -- because this box invites them to. However, if there's a checkbox saying "click here if you have a coupon code" (although my checkbox says something different), it means that by clicking it people will lie, and not everyone wants to do it.

Now that I think of it, maybe even better strategy would be to buy a domain "blabla-coupon-code.com" and put there a coupon code for your thing with a small discount. People who like to search the web for coupons will be satisfied ;)
Your might have a blacklisted gpu driver. Try running chrome with the startup flag --ignore-gpu-blacklist
Yeah, you're getting there at the end when you have no GIL and multiple cores being utilized. Without that, your speculative parallelism isn't faster, it's just as long unless it just happens to be threadsafe C extension IO.

Which is exactly the point. Haskell performs better with fewer caveats all the time.
It's not an exact science since no one knows future network increases, but you can see a detailed view of the thought process around that question here:

http://thegenesisblock.com/at-this-rate-the-last-new-btc-wil...