skysight-inc/HackerNews huggingface dataset:
Agreed on both accounts but the grandparent comment was talking about runtime performance penalty, which is gone (for the non-exceptional path) in modern implementations.

But yes: exception safety, even basic safety (don't leak resources or crash) is difficult, let alone strong exception safety (no side effects if exception occurs).
GE does make composite fan blades, but not for A380 engines.

GE supplies engine to A380 through joint venture with Pratt and Whitney. That engine is GP7000 and it also uses hollow titanium blades, just like Trent.
There is also nuitka - http://nuitka.net/
No, its just not possible to maintain the integrity of the rocket if you're going to somehow lay it down on an inflatable. How could an inflatable withstand the temperature of the firing engines?
Go cheap oil!
Consider the case where everyone can generally agree that the leader is qualified to make good decisions, but they cannot agree that everyone is so qualified.
The Layman's Intro to Encryption Concerns
Ask HN: How do I get 100 new customers every month?
I can get 100 customers if you give me a time span of 4 months but how do I get 100 in one month. I am open for both inbound and outbound approaches.
An exact bulls-eye, absolutely amazing.
As it guaranteed to work by the appropriate standards, there are programs that use zero bytes allocations to get a process wide unique cookie.

edit: turns out that no, neither C11 nor C++11 guarantee that, it was probably historical behaviour.
We're the adults now and we* get to decide what that means. It's not an easy change to affect I know but we* can be authoritative and well researched and right and have gifs of getting hit by tennis balls at the same time. It's one thing if those gifs are trying to use an appeal to emotions to paper over weak logic/arguments/data but in this case they don't really do anything--which also yes does mean they could be removed without loss too.

*we: that is the hypothetical we, I am in no way associated with buzzfeed
Based on buro9's comment, their wife already has a PhD.
Yup. That's why it needs to run on port 80.

I don't think Windows Firewall lets you listen on *:80, but localhost:80 is just fine.
Software is indeed eating the world but that doesn't mean that, say, those smart vehicles or robots will be made by a startup rather than GE or GM, or in one of the most expensive places in the world.

But is that what startups are doing? I mean, there's only one startup that has requested an Autonomous Vehicle Testing Permit in California - Cruise (YC W14) -, all the others are established companies.

It's true there's a whole bunch of startups producing IoT trinkets, but those products are usually cheap and unambitious, not stuff that require large investments in R&D.
Similar events happened in London in the mid-19th century. University College London (UCL), now one of the best colleges in the University of London, was founded to allow students entry through non-religious means. Consequently, it was the first college in the university to allow equal entry to both Jews and women.
It has to do with the payload mass. If it's too massive, it won't have enough fuel to return to the launch site, so they do a landing at sea.
This comment from Tucker Max's article on why he stopped angel investing bears repeating here:

> "But when you have a lot of money chasing all these great ideas, and you combine it with the fact that entrepreneurship has gotten sexy in the last few years and become the “in” thing for a certain crowd, what you end up with is a huge number of people starting companies who have no business at all doing that."

http://observer.com/2015/08/why-i-stopped-angel-investing-an...

I've said this to tons of people privately and publicly: entrepreneurship has become the new "I'm working on a novel". Lots of people have good ideas in their heads. That doesn't mean they should be building businesses on them.

Some people are just not cut out to be entrepreneurs. And once the money dries up, these will be the first ones to go.

The rest will continue building businesses because they can't really think of doing anything else.
I've definitely seen promos for seminars that claim to "double your speed" and at the same time "increase your comprehension," so I'd say that speed reading being on par with normal reading is at least a real claim made sometimes and a perception that probably exists among many.
Adblock Plus – IAB dis-invites us, disses compromise and buries dissent
How is "discriminating against a group" different from "balancing its overwhelming predominance in a particular field"? The dictionary definition of "discrimination" says there's no difference. Is the definition that says there is a difference some sort of a moral standard? What are the thresholds of that standard - at what point group members outdoing others warrants affirmative action and by how much the numbers of those members should be dwindled by affirmative action? Which groups should be punished by affirmative action - ethnic and gender, or is religion a legitimate target, what about height, family history, a preference to wear clothes of a certain color - whom is it OK to count and then hold to a higher standard to balance their overwhelming predominance?

Also - what cost should society pay in lost output due to the average ability of people allowed to enter certain occupations having been lowered by affirmative action (as it has to be if less capable candidates are admitted instead of more capable)?

Perhaps most interestingly - how much cost should a group supposedly "helped" by affirmative action pay for the dubious favor in (A) people being unable to successfully function at institutions who admitted them, not because of their abilities, but due to affirmative action and (B) perfectly capable people of the "helped" group being stigmatized because "everyone knows they only got to where they were due to affirmative action, and not due to their ability?"

(I guess you might notice that I'm not a huge fan of affirmative action, but if we could at least agree that there's no reasonable way to distinguish between "affirmative action" and "discrimination", that would be in itself awesome, even if we disagree about the merit of, well, that one thing with two names...)
One thing that is not discussed in the book is how to clear a memory palace for reuse. Any suggestions?

I read the book a few years ago, and to this day I still see a large jar of pickled onions outside my parent's garage, cottage cheese outside their front door, and other items on the shopping list given in the book scattered throughout their house, which suggests reuse is going to be a problem.
2.7 million is from the article. But looking back you are right, it's an average not a cutoff.
We tried using Swift for a new app but the language isn't ready for prime time. It's an impressive language by itself, but the support for it just isn't there yet. Since it's still in infancy things change too much and documentation/stackoverflow is pretty weak. Our app was simple but we spent more time trying to make it work than actually programming and ended up doing an obj-c rewrite in less time. I'm sure this scenario won't be the case for long, but it's the case for now.
So if you launch out of Cali going west and separate stage 2 300 miles out.... What is under you to land on?
If you watch the video for Windows 7 you see Windows Firewall tries to block it. It is blocking Potato from listening on *:80. There are no such restrictions for localhost:80.

No modifications were made from default config.
It doesn't seem to bother anyone that folks in poor rural countries with no functional cities are separated from their potential jobs by a border. Why would we care more about rural New York State'ers being excluded from NYC than we would about Haitians being excluded from Davenport, Iowa? The latter exclusion has a much higher humanitarian cost, and most of the justifications for strong national borders can be used in a hypothetical world where the NYC metro area was sovereign, just like they are already used for city-states like Singapore and Monaco.
Top Books on Amazon Based on Links in Hacker News Comments
JS.coach – an opinionated catalog of open source JavaScript packages
They want to be able to relatively quickly send it back into space. If they have to pull it out of the ocean and dry it out/fix it, I assume this makes their turnaround time less than ideal. Think what you do with a 747, it lands, a technician checks it out, it gets refueled, it takes off again. We'd be able to build things in space so much faster with that sort of round-trip lifting capability. I assume there are also implications for exploring other planets. This is my guess as someone who has not studied the issue closely.
The utility here is not really landing on other planets, but instead the order of magnitude decrease in launch costs if they don't have to build a new first stage for every launch.
I'm not sure what exactly you mean. These breaking changes have not been surprises. They've clearly state their intention to evolve the language in public since it was first shown.
Looks great, and the discussion on HN is always helpful to find other related projects.

I've just finished prototyping a A/B testing backend running over Lambda / API Gateway. I think I bumped into some of the rough edges others are mentioning.

What troubled me the most however is how difficult it is to share / open-source the code for such a project. There are no environment variable support, so to configure things you have to embed them in code. No way to easily package something that users can just run a few simple commands and get up and running (I think having an AWS CLI + keys already set up is a pretty hefty upfront requirement). So you end up with a huge readme or a blog post just to explain how to set up all the moving parts. A small mistake anywhere along the process and this thing isn't working any more...

I hope tools like Apex can also solve this use-case. Something akin to the heroku / digitalocean button would be truly awesome.
Depending on the mission it may not be possible to get back to the landing spot and sometimes the most efficient place to land is in the middle of the ocean. Musk answers that question here[1] in a tweet regarding the launch. You would have to have launch sites all around the earth and get approval to land or carry a lot of extra fuel to get back to where you started from which would be prohibitively expensive and heavy.

[1] https://twitter.com/elonmusk/status/688844190826942465
I think of Lambda like I think of database triggers. It's a great solution for the specific thing that it's built for but people have a tendency to go very overboard with it.

Built for: Triggering events when something happens within AWS
Not built for: Replacing all of your servers

I once knew a guy who was very into Oracle and wanted to server up HTML from stored procedures. This strikes me as that line of thinking.
> football is just wrecked

Association football or American football? In the US, it's pretty much open knowledge that all NFL players are doping, but there isn't really anything dirty going on.

Now, college football, on the other hand...
Do whatever you are already doing, but 4 times more effectively?
The rocket exploded because it fell over, not the other way around. Had one of the landing gears not malfunctioned, it would have been fine.
The corrosion from the salt water would completely ruin the engines, obviating any benefits from returning the first stage.
The Future of Jobs
Depends on what you sell...if you are a megayacht salesman you can't get 100 a month, there just aren't that many customers. What do you sell, and where do you sell it?
I would not be surprised if the percentage of Apple's code that is in Swift is more or less the same percentage of Google's code using Golang (with Golang having a slight advantage maturity wise).

That could be true, but what it's being used for is perhaps more important than the percentage. Not to underestimate the importance of a calculator, but it is known that Google uses Go in:

- dl.google.com

- Kubernetes

- Youtube's MySQL scaling infrastructure (Vitess)

- Google's mobile data compression proxy (Flywheel)

Of course, Go's first stable release was in 2012, so Swift still has some time to catch up ;).
> Hence the irrelevancy of countries as an institution.

How do you see the evolving boundaries of force monopolies between nations, cities and private entities. Pre-nations, it was complicated, https://en.m.wikipedia.org/wiki/Peace_of_Westphalia
Rockets have always been able to land in the ocean more or less intact (i.e. without disintegrating). However, if the rocket is dipped in salt water, the restoration would be enormously expensive, so it needs to stay dry to be re-used.

Of course, you could just try to land it vertically on the water on some cushion and have more cushions deploy to make it tip over horizontally and float (all the time staying above the surface of the ocean). Such a solution isn't as compatible with recovery on dry land. If you want to do e.g. space tourism missions and land on dry land, the vertical landing seems better.
i've been doing it for a while, and well to me it worked.
I didnt follow an official course just used tips around the internet. I was able to read a huge work related projected, and make the decision to go into it for our company or not. By speed reading i found the problems in the project a 500 page doc. And those where tackled by contract makers. later so it depends if you can do it or not, but dont put money in it
As a former gymnast, I like the sticking the landing analogy but a human (even on an unstable mat) has far more control over their balance point (we do much of our balancing by bending at the waist - if only the rocket had one).

In any case, I agree that this was very close. I've also spent a reasonable amount of time on "big water" and was specifically watching the attitude of the landing deck with respect to the horizon. I didn't see much movement of the barge (but that doesn't mean there wasn't some instantaneous movement that together with the force of landing exceeded the leg's load rating).

The other thing that's struck me is that the SSTO advocates could end up becoming irrelevant. Who's going to argue we need SSTO at all if we can recover and reuse all the stages anyway? Multiple stages will remain dramatically more efficient (Yes - I know we don't get space planes with two hour flight times from New York to Tokyo quite as easily).

Finally ... I just have to say "I LOVE THIS". I remember as a child watching the Apollo missions and, as an engineer, I haven't been this excited about a project for a long time. Isn't this exactly the type of thing we can rally humanity around? Who's going to argue that it's not a great accomplishment?
That's not quite true – Apple has added quite a few improvements to ObjC over the past few years. Not sure if this has slowed down since the introduction of Swift, but I presume they will still keep coming for now, since (as this article postulates), Apples still mainly uses ObjC internally.
Would it be possible to have locking mechanisms directly in the dock itself?

ie. maybe the rocket descends several feet INTO the dock into a hole which then locks around the body of the rocket?

||
||
==||== dock (which opens wide for decent and then closes)
||
^^
Two main reasons I can think of:
1) Sea water is extremely corrosive. If your booster takes a dunk in the drink, it's going to be very hard to refurbish for another launch. Lots of components (electronics, valves, etc) would need to be replaced and the structural integrity of the tanks themselves may be compromised by rust.

2) Flotation devices attached to the booster = extra payload. It would be the canvas/dinghys AND compressed gas canisters for inflating them. This is arguably (a lot?) more weight than just landing struts + fins. Any extra payload on a rocket represents a massive cost and means less stuff you can haul for paying customers.
Or even a different kind of barge. A floating 'jar' rather than a flat surface, the thing could tip and not fall all the way.
January:Time to declutter
For weight, the sides of a rocket are very thin. Think tin can. Vertical is OK but horizontal can't work.
AMQP isn’t so scary… if you know how to start
As the authors note in the full paper, even a sample rate of 200 Hz only results in capturing audio information for frequencies up to 100 Hz.

If one applies a 100 Hz filter to some samples of human speech (even low-pitched male voices, as the authors of the paper suggest), the result is (unsurprisingly) the sort of "womp womp" that one might expect to hear from a car with giant subwoofers, not anything containing recognizable words.

The authors of the paper admit that they were unable to recover the content of speech, but focused on identifying the speaker. That's a long way from capturing credit card numbers (which is what their promo video implies).

Basically, I'll believe it when I see it. The approach is really interesting, though, and I think could be useful for other things.
It would be great if, in addition to allowing the export of photos, the social graph could be saved. Friends Reunited has data on my cohort that Facebook doesn't, and in any case I think FR is a much more ethical custodian of my data than Facebook.
In an earlier re-entry video, the camera lens ices up during the re-entry burn, presumably due to water from the engine exhaust. So I don't think that re-entry is necessarily enough to heat up the stage enough to melt all the ice on it.
Wikipedia says that he applied to med school, was rejected, went to grad school in chemistry at Columbia (partially before and partially after World War II), and then after getting his PhD he taught at the Boston University School of Medicine. So he taught at a med school without attending a med school.
Introducing the world's first Myo-controlled prosthetic arm
I think the reason they are being called out on this is because they are claiming that their shows have more viewers than the biggest shows on cable. It seems fair that if you are going to make claims about your viewership, you should expect to be asked to back that up with numbers.

That Netflix is thinking about ratings scares me a bit because that suggests advertising is on their minds.
Yes, tech assisted speed reading should actually work while retaining comprehension, as your eyes don't move.
When I interviewed at Apple I talked about Objective-C vs Swift with multiple developers. Most seemed to indicate that due to the millions of lines of code already written in Objective-C that they, at least personally, were highly unlikely to rewrite them in Swift because it currently works and it's not worth the change over from a product standpoint. In fact a couple of time seemed hesitant that Swift was the future when I talked to them about it.

I understand not wanting to rewrite millions of lines of code but I feel like they should at least want to make a slow transition of at least many of their apps to Swift (since it can bind with Objective-C it's not like it has to be done all at once; it could be something where they spend a small percentage of time doing off and on). After my interview though I got the impression, at least from the developers I talked to, that they will probably never use Swift unless they have to.

Edit: I would like to point out, in case it's not obvious, that my case is purely anecdotal. Reading responses here and searching around Google is seems many inside Apple are excited about it which could very well be more than the people not excited about it. Still, I'd like to see some more platform support as it appears small at least to me looking from the outside.
It seems like you have made this claim in a few places (Kaggle, and here under at least two different usernames).

Few people seem to agree with you, and whilst there certainly are similarities it looks to me like there are more differences.

I understand that you think your patent is being ignored, but I don't think commenting everywhere that mentioned Word2Vec is going to help you.
> If you can ever figure out a single solution to "why don't people 'just' start exercising", you'll probably solve the global obesity epidemic.

I've seen this at my workplace. There is a gym that is available to all employees. Like, a nice gym. Fantastic assortment of weights, free classes from legitimately knowledgeable people at all sorts of times, free consultations for further instruction...

Very few people use it. It's right there, damn it!

I think that your reason is spot-on. Going to the gym takes a sacrifice elsewhere, whether it's shortening your lunch break or watching Netflix / TV for an hour less per day. And, well, it's not enough of a priority for people to make that sacrifice.
Maybe just support hg-git? All someone has to do is write some tests for Gitlab, and then you are all set?
Khard – console CardDAV client
I assume the parent poster meant that the launch should take place from somewhere on earth where there is earth 2300 miles out. It's likely not convenient to do so, at least not for all launch directions.
Persians will not follow a super strict Islam like Saudi and other Sunni countries do. It will just not happen. You are aware they were quite liberal in the 1950's before the recent fundamentalists. Even now in Iran they recognize 4 religions, Muslims (sunni and shia), Jews, Christians and Zoroastrians. Compare that to Saudi in which there is one religion, sunni islam.

And yes the educated cities is where the main opposition to the islamic regime is. There is support for the regime amongst the more religious fundamentalists. The islamic regime is considered by many as uneducated religious fundamentalists who have gained power by force.

There is some difference from Arab countries where Islam is synonymous with government.

I have met only a few Iranians in the US. Naturally they will not support the islamic regime, but you do get a sense of the culture and how Islam is an add on. They consider themselves much more european.

Regardless of all this, the US should not become only Sunni nation's allies. Read the wikipedia on Religion in Saudi Arabia: https://en.wikipedia.org/wiki/Religion_in_Saudi_Arabia. It is chilling.

We do not want to get involved in their thousand year clash on whom to follow, the father-in-law or the son-in-law. It would be excellent if the US can give more importance to Iran to counter Saudi influence in the region. Obama has done wonders.

Republicans are really stupid if they continue to villify Iran and let support for Saudi Arabia and Pakistan go unquestioned. Iran was ready to support US efforts in Afghanistan. I think the Bush families oil connections with the Saudis got in the way.
What a Post-Persona Landscape Means for Open Badges
When I mentioned Python's with statement, that's really all I'd want. Something neater than C's "goto error" error handling, but not much more than that. I think there's constructs like this in some languages.

> Simple rule: a class should never contain handles or pointers to more than a single resource. Composition handles the rest.

The issue with this is that in the real world, you have to deal with 3rd party libraries and frameworks or even the OS syscall interface which don't follow this guideline. So you'll end up writing wrappers for all your "foreign" objects from any other libraries you use. This is a lot of work and creates impedance mismatch problems when there's no simple clearly established concept of ownership (e.g. the wrapped objects are already reference counted) or the assumptions of the library aren't friendly to C++ style semantics.

If you live in a "modern C++ only" bubble, this isn't an issue.
American investors would be well advised to look north of the border...