skysight-inc/HackerNews huggingface dataset:
Card rules vary frequently, down to daily. Also, many rewards have limits (both min and max). Wallaby helps you keep track.
Mobile app developer
Looking for a team to help develop one of a kind mobile app. SD.CA.
In the US you don't need chip and pin. Look for it down the road.
The problem is that search engine != video sharing site.

The sign of a good search engine is one where the user leaves quickly because the user finds the content they want quickly.

The sign of a good video sharing site is one where the user stays because the user keeps finding videos they want to watch.

So, in fact, I would find it perfectly acceptable if Google does measure YouTube's performance (and product quality) by a metric related to time spent on site.
> I don't think this gain came from pre-fetching anything.

It may, and its possible that it doesn't show up on some cpus. see this thread for an example of how difficult it is to find a good generic prefetching size:
https://lkml.org/lkml/2013/10/11/534
SkyDB using LMDB gets 3GB/sec on a standalone PC. https://groups.google.com/forum/#!msg/skydb/CMKQSLf2WAw/zBO1...
Her dismissal is anything but quick. It's a carefully crafted argument which deserves real rebuttal.

I'm not in any way trying to bash mongo. I have a consumer facing production that has been running it since 2011 without great performance and no problems, but my data model is carefully simplified, and I've been uneasy about how well it would work for a more complex schema.

I found Sarah's analysis useful, but I'd find more precise guidelines for the conditions of what does and doesn't work even more useful.
Thanks! I tried -fprefetch-loop-arrays before figuring out that it only prefetches the array memory, (ie, memory with addresses like &ob_item[i]), rather than the memory referenced by the array memory, (ie, memory with addresses like ob_item[i]). And empirically adding -fprefetch-loop-arrays got me no speedups.

I didn't try any other GCC command line arguments because I honestly didn't know what other relevant options there were.
Crowdsource your salary An economy built on love
I like that this works with loyalty cards too. Unfortunately my early beta card got destroyed after the fifth or sixth time I took it to the Pizza Hut buffet and had them punch it.
And midwives aren't even that.
Mobile app developer
Looking for a team to develop one of a kind mobile app. antoniya.art@gmail.com
Just when you thought you've seen the last card payment idea, lo and behold there's another one. I'm fascinated with how many startups are in this space.
Pretty interesting. Here's my guess at how this works:

Wallaby is both a card issuer and (working with) a processor. The merchant's processor routes the charge to them like a normal card. Then Wallaby selects the appropriate card number and proxys the charge via their own processor to that card's issuer. I.e. the same round-trip transaction, they're just a man-in-the-middle swapping out card numbers. The issuers never see a difference.

Couple issues they'd have to have worked out for this:

1. Getting approval from the card network to proxy a transaction like this. Given the founder's background with Green Dot I can see them having the pull to drive that.

2. Dealing with chargebacks. The merchant will have a record of the Wallaby card number because that's what's swiped through the POS. But the customer will see it on their actual card's bill (let's say Chase). If they file a dispute, and Chase contacts the merchant, there's a card number mismatch. I wonder what their solution is for this. Perhaps they instruct cardmembers to initiate disputes with them and they proxy those as well.

Overall I have to say I like this a little better than Coin, if only because it's simpler. You don't have to make any decisions each time you pay, you just configure it through the cloud, which can actually make smarter decisions for you. And it's not $100.
Bill Gates, Inside the Gates
Could I put all my credit cards in a Wallaby Card, and then put my Wallaby (and debit and reward cards) on a Coin Card? If so, I'd have just one card (Coin's pain point), but I'd also get Wallaby's "smart routing" for miles (Wallaby's pain point).
Have you never been in a cab in a major city?
Startups as a Service
Something that you pay a monthly fee for and gives you access to ton of things. In this case, you have to pay per month per course, and the courses come and go.
> There are no-fewer quality-obsessed developers participating in the community as a result of GitHub.

There is natural attrition of participants in any project; what keeps (or kept) so-called "quality obsessed" developers in abundance were the social structures -- and social currency -- of the communities built around open source projects.

In exchange for stature, learning, and intangible satisfaction, contributors would learn project guidelines, interact with project members, learn to meet the required levels of quality, and over time be subsumed as committers and trusted members of the community. This approach sustained open source for roughly 20-25 years.

However, github's social network structure supplants the traditional communities, instead creating a wholly Github community in which the previous social construct (and social economy) can no longer truly thrive, and instead, the community and social focus is redirected and reinvested in Github itself.

The similarities to the reward mechanisms and value feedback mechanisms of social networks like Facebook are quite strong.

> It sounds to me like you miss the "good old days" when the club was more exclusive.

This seems to be a recurring theme; it sounds to me like justification for cognitive dissonance borne out of a situation where two choices exist:

1) Subscribe to the notion in which one would be a junior contributor in a broad pre-existing world of established engineers, or

2) Ignore the experienced engineers and create a community of self-evaluating peers, writing off the old model as "exclusive" rather than "experienced".

I expect the truth is found in-between those two poles, but reality has trended strongly towards number #2.
That was exactly my thoughts.
The whole case looks personal and the panel was reportedly anything but impartial and competent[1]. This committee seems bizarre in general.

[1] http://drjamesthompson.blogspot.com/2013/11/helmuth-nyborg-g...
Samsung planning smartphone w/ wraparound, three-sided display for next year
> It will get standardized in the not too distant future. [1]

Standardized by Google, perhaps, but by nobody else. It will not be a multi-vendor standard.
the wallaby card sounds pretty awesome. i just checked out their mobile app and tested a few places out and the rewards were accurate on my Chase Freedom (which has rotating categories each quarter).
Most Bitcoin trading now done in China
People have made the "NASCAR jumpsuit covered with logos from donators" suggestion/joke for years. There was even a White House Petition for it: http://www.huffingtonpost.com/2013/03/20/white-house-petitio...
NSA chief says Snowden leaked up to 200,000 secret documents
What if it only works 75% of the time? Let's say you eat a meal, and just when you go to pay, the restaurant looks at this crazy thing and says "no, you can't use that". You have to carry another card with you, or cash to cover any purchase you might make.

It's only good if it works as well as credit cards work - 99.9% of places accept them.
Unless required by local or state law, most major credit card companies prohibit the requirement of supplementary identification to complete a transaction.

With that said, they require verification of the signature on the back of the card with the one on the receipt / screen.

In the event that the card is not signed, you are then allowed to require identification and the card must be signed by the customer before it is used.
See also http://www.sciencedaily.com/releases/2010/04/100426182022.ht... for melanin coated silica nanoparticles protecting mice bone marrow from total body radiation
Even better, get the Loop case for your phone and carry zero cards. It emulates the signal the reader would get from a magswipe wirelessly, so you just hold your phone near the reader. It's supposed to work with credit/debit/loyalty cards like Coin and is shipping soon, not next year.

http://www.kickstarter.com/projects/loop/pay-with-loop
As it goes "It's all in the execution", good luck!
This looks like it work great for optimizing/consolidating personal cards, but one advantage Coin offers is the flexibility of charging normal purchases to a business account. I'm not sure how Wallaby could discriminate if my restaurant meal or office supplies are a business expense or just personal use.

Either way I'm all for any innovation that thins out the number of cards in my wallet (with the goal being zero.)
I wouldn't call it luck. Google is consistently ranked as one of the top workplaces. Out of a large number of my co-workers at Google, almost all of them seem to enjoy their work. Very few people are unhappy or seeking to leave. The main difficulty is getting in.
LSMs have a long long way to go to catch up to LMDB.
http://symas.com/mdb/hyperdex/
When you've reached a point where your technical skills in your chosen set of tools only comes second (Web, Python/Django)

Frankly they won't care about the libraries you used or how you coded the app, but at the same time freelancers should be technically sharp enough to write maintainable code with proper version control and automated tests, but more importantly, programmers should be skilled enough to propose proper solutions.

Example: Given a problem that can be resolved with an in-app chat solution, that chat solution shouldn't be based on polling a SQL database. I've seen one in production and what happened after it was released wasn't pretty.

Example: Given a problem that requires multiple POS machines with their own offline data to sync on a central database, a solution shouldn't be based on installing full SQL databases with purchased licenses armed with massive stored procedures moving data around. I've seen one in production. Maintaining, both financially and technically, costs so much for both the client and for their in-house dev team.

Technical skills should come naturally because freelancing is beyond code, it's about business development.

Freelancing/Consulting isn't just about coding/designing but its more on knowing what your client actually wants/needs, educating them about your proposed solution, delivering that need, knowing how to deliver that need through proper communication, and making them go through a process with a tight feedback loop that is both pleasurable, emotionally and on paper, that would make them go back to you and/or refer you to others.

Most software out there are just CRUD apps, or as I would like to put it: glorified excel sheets. Other than delivering a standard website with Wordpress/Drupal as your solution, custom software and building on top of other poorly written custom software from previous developers will be your toughest challenge if your technical skills are still being sharpened. But if you feel your technical skills are sharp enough, you can already go out there and do something on the side :)
I don't honestly believe it's possible for someone to ask questions like that without a malicious purpose, so I shall refrain from engaging you henceforth. I pray that the women in your life, if you have any, can see what you are -- but I'm fairly sure it's obvious, so I'm not worried.
Question on EcomHub. Did you use them right from the begining?

Also how did you get the intial product data i.e pics etc?
Time lapse of all nuclear exlosions from 1945 - 1998
This is an excellent public resource, the likes of which individual governments should be releasing.

Three areas of personal interest.

(1) Northern New Zealand is also a forestry culture, and shows the appearance and culling of dense pine forests.

(2) The areas around southwestern China, just across the border in to Burma, show clearly the impact of China's demand for timber. While rubber plantations can account for the small amount of replanting visible, the recent denuding of the Kachin states of northern Myanmar (an armed Christian minority that eschews membership of Myanmar entirely) is here very visible... particularly areas around Myitkina (the Kachin capital), Hpakant (slightly west) and the southerly adjacent Shwegu. An unending stream of trucks carries these forests in to China for consumption as wood carvings and luxury furniture, often processed by western-supplied high volume industrial sawmill equipment (one supplier is a New Zealand company). Much like illegally logged timber from West Africa, this furniture may then be trans-shipped to western nations (eg. Europe) where distributors feign ignorance of its unsustainable origin, citing the vacuous claims of Chinese factories. In exchange, the theory is that the Kachin receive weapons and covert medical assistance for their leadership (similar to other groups, such as the Shan and Wa armies to the southeast).

(3) The deforestation of North Korea in exchange for pitiful trade volumes from China and unsustainable timber/charcoal driven winter heating (due to inadequate clothing and uninsulated housing conditions) is also very clear. The area near Changbaishan (Baekdusan), Korean culture's most sacred mountain (now 50% owned by China) is particularly bad.
>Q. Is Coin password protected?

>A. Your Coin account is password protected and the mobile app requires that you type in your password before you can access sensitive card details.

There is no way in hell I would trust a single password to protect all of my debit, credit, loyalty, or gift cards.
the CEO is pretty legit. http://en.wikipedia.org/wiki/Thiago_David_Olson
Yes, how about "many merchants won't accept it". Or "the battery runs out after 1 year."
The average woman who plans to have a homebirth is having a complication free pregnancy, and anecodotally, everyone I know who has had one it has been for their 3rd or higher birth after complication free deliveries in hospitals.

You can't compare those numbers, they aren't the same populations of pregnant women.
> However, you're essentially taking it as a given that the absolute number of worthwhile projects has dropped thanks to GitHub.

Not just dropped -- they're drying up. I can only speak from anecdote (nobody has paid me to run a study), but while I've seen no dip in usage of my libraries, and I've seen my projects explode with half-baked forks on Github, I've seen mailing list participation and worthwhile code patch submissions drop to very nearly 0.

> What does, for example, Sourceforge get right that GitHub doesn't?

SourceForge essentially died out for modern projects upon the release of Google Code in 2006.

However, what (traditionally) SourceForge and Google Code did right -- and, what projects did in their own hosting for decades before and after that -- was place the project's community in the forefront, and the code in the background.

This meant that documentation, releases, mailing lists and other constituents of a vibrant community project were placed in the forefront, with the code being something that one worked on as part of the community.

By contrast, Github made projects secondary. The code was (originally) always attached to an individual account name. The primary project page was the code itself. Forks existed at the same namespace hierarchy as the projects they forked.

The result was that Github sucked community energy into Github itself, and in doing so, began to redefine the community social constructs in a way that allowed users to maximize social and personal rewards while minimizing work necessary to conform or participate in the project's community.
Interesting... Suppose it is a Visa card on the frontend and then on the backend I have Amex linked. Will the merchant be hit with Amex fees? Will it be accepted if merchant doesn't accept Amex?
Hover for Typhoon Damage Comparison
Learning Rails isn't easy easy. Once you get the hang of it, it's comfortable, but it takes some time and there's a moderate learning curve to really internalize everything that's going on. You also have to learn how to use major gems, including their syntax. The Ruby language itself is pretty nice, though.

The article focuses a lot on testing frameworks in Rails, which I haven't yet used myself, so maybe that's why I haven't been so confused.

> I basically had to go back and reread the entire tutorial and had to deduce what was actually going on. I eventually figured it out, but by that time I had spent a LOT of time on it.

Magic takes time to get used to, but it's nice once you grok the main idea. Being more explicit might make the code more immediately understandable, but once you understand what's going on, the magic acts as a mental shorthand to summarize the process and leave out the boilerplate. That's how I see things, anyway.

I'd say Rails is easy to use (once you know it), but not that easy to learn.
There's an unspoken rule that satire should be funny.
Howard, is LMDB effectively limited to 128T (on 64bit machines and 2GB on 32bit ones, not that one should be running large databases on 32bit machines)?

Also what about concurrent writes? Does it have a database wide writer lock or is it per key (per page?) ?
Thats true. But what have they really got to sell?
Perl Stratopan - a quick start user guide
I hope we will be able to do it soon. When we see all these awesome kickstarter projects and all these millions $ invested in R&D. I think we will reach soon another level
We didn't remove it.
Washburn is actually doing quite well now: http://www2.hickoryrecord.com/news/2012/apr/08/4/washburns-r...
Soon it'll be (startups as a service) - as a service, SaaSaaS
The problem with such comparisons is that high-risk pregnancies won't be planned for home birth to begin with. Also, in a hospital, a physician will be called in at the first sight of any complication, so midwives won't be attending births that go wrong.

A comprehensive study in Oregon found death rates 6-8x higher in home births than hospital births: https://olis.leg.state.or.us/liz/2013R1/Downloads/CommitteeM....

See also this meta-survey of the literature: http://www.ajog.org/article/S0002-9378(10)00671-X/abstract ("Less medical intervention during planned home birth is associated with a tripling of the neonatal mortality rate.").
It varies hugely depending on the axis of acceleration, so given the manoeuvres in the video I opted for the lower end of the spectrum, which is probably a more realistic estimate than 20Gs.
More credit lines give you a higher credit score. Yes it has relatively low impact, but the more lines you have, the better it is for your credit score. That's just the system.
It's a satire piece, not actually written by the CEO ...
I also try to regroup all the 3D printers here : https://thre3d.com/category/printers
check it out, maybe you'll need one!
We need more collaboration between engineers and the field of medicine. I'm reminded of Tal Golesworthy, an engineer who did a TED talk or two about how he collaborated with his doctors to design a cardiac implant that fixed his dilated aorta. He had some very insightful comments about the development process and his doctors' opinions of different approaches coming from outside the medical community.
Regarding domain hacks: times are changing and it's becoming more mainstream, evidently even for financial services; perhaps only the cooler ones though.
It is limited to the logical address space. Since most current x86-64 machines have only 48bit address space, 256TB, and assuming the kernel keeps half of the space for itself, then yes, the current limit is 128TB. But I suspect we'll be seeing 56bit address spaces fairly soon.

It is a single-writer DB, one DB-wide writer lock. Fine-grained locking is a tar pit.
The Top 7 Technology Trends That Will Dominate 2014
Midwives are certified medical professionals (comparable to specialized nurses or physicians' assistants), at least in the United States. You're either talking about somewhere else or you don't actually know what you're talking about.
So looking through this 'track', I see one course which seems like it might be more central to the discipline, "Intro to Data Science"[0]. Has anybody had a chance to compare this one against Bill Howe's "Introduction to Data Science"[1] on Coursera?

[0] https://www.udacity.com/course/ud359
[1] https://www.coursera.org/course/datasci
- Do you mind if they reside on the East Coast? Also what platform are you looking to build the mobile app on?
You're not sedated during birth. An epidural is localized anesthesia.
This is really cool!
I like the message.
Aloha!
Yotta of wotta lotta capitalistic illustrations?
Freelancer.com IPO on Australian Stock Exchange; valued at $1 billion
>Using a single, unreplicated database instance in production for anything serious is bizarre

It is incredibly common. Go check out a thousand businesses running mysql, you'll be able to count the ones using replication on your fingers.

>Failed hardware is hardly unheard of.

You don't need to use mysql replication to deal with that. Even the crappiest low end SAN storage devices do it vastly better than mysql does, without any of the bugs and problems mysql replication has.
How to Get Censored on China’s Twitter
- Clickable Link ~> http://predikt.co/

Personally I like the idea. I have never heard of it before. Something like a Credit Score for profiles.
Wha? Venture capital is moving to the cloud???
Godwin's law / Association fallacy.

But thanks for finding the article.
What are Linux Processes, Threads, Light Weight Processes, and Process State
>Running a single database in a production environment is totally unacceptable and a major business continuity problem.

You don't need to use mysql's broken replication to get HA. Hell, I've seen more people (wisely) using DRBD for that than using mysql's replication. But even entry level storage devices do replication.
The baby is attached to the placenta, which remains in the womb, via the umbilical cord and gets oxygen this way during the birth process. Once the baby is fully out it starts breathing (the first cry). Then the placenta is delivered.
I'd bet a significant percentage of those are store cards taken out for discounts. In case they don't do this in your country, retailers here often offer credit cards that:

- offer instant, in-store acceptance

- have no annual fees

- give you discounts when used at the store

So when you checkout at e.g. J.Crew, they might say "hey, if you take 5 minutes and apply for a J.Crew card, we'll knock $50 off your purchase right now."
I can't understand why you people use more than a single card for payments? That solves all the problems that these Coin and Wallaby cards are trying to address. Rewards are bullshit anyway, I buy stuff from honest companies without any kind of reward systems.
Doesn't Apple require that in-app purchases happen through their system (where they take a cut)? The Coinbase app let you buy Bitcoins with US dollars. Sounds like a TOS violation, not an anti-Bitcoin conspiracy or fear of regulation. Admittedly, I'm not an iOS developer and don't keep up on changes to their developer guidelines, so I don't know if that rule still stands or if it applies here.
Who knows. Pre/post roll ads on snaps. Stickers...
Ride The Subway For Free In Moscow, But Only If You Can Do 30 Squats
I think the idea has potential. I am curious what kind of insights and analytics you will be providing.

It would be good to start with a specific audience (e.g. programmers) and use GitHub activity to factor in their professional experience as an example. I can see this being useful for recruiters to screen developer linkedin profiles.

The name predikt implies you plan on predicting something, but I am unclear what you are predicting. Potential salary range? How likely to leave current job? etc.
Not a huge issue but this device likely makes it pretty easy to intercept your mag card data.