skysight-inc/HackerNews huggingface dataset:
I believe that dividends are not priced in.

The reason I believe this is not related to stock picking working for me.

I believe it because the market is not efficient, and dividends being priced in relies on an efficient market. Any success I have in stock picking relies on this inefficiency; it's just a symptom.
> Does 250k messages/sec at peak easily, More details in this presentation https://www.youtube.com/watch?v=PB8dBnpaP8s

250k messages/sec is pretty low.

It'd be useful (not to mention entirely feasible) to be able to handle 5M/sec bursts on a single system and aggregate sustained 50M/s+ (10Gbps network).

The system should be able to establish total order (serialization) locally and causal order over the network.

I did some tests and found out hardware limits are somewhere between 20-50M messages per second (serialized) on current consumer grade X86. Practical implementation would of course be slower.

Of course you need to go binary logging at that point, adhere to cache line boundaries, etc. mechanical sympathy. Maybe even do usermode networking at the aggregator server.

Binary logging is a must, because even something like string formatting is simply way too slow, by an order of magnitude.

In my quick tests I found the string processing hit to be surprisingly high, 10-50x. C "sprintf" and C++ stringstream are atrociously slow. (Surprisingly, considering sprintf has a pretty complicated "bytecode" format specifier parsing loop, it was still significantly faster than stringstream implementation.)

Timestamps are another huge performance issue. Typical system calls for high precision (a few microseconds or better) timestamp take several microseconds each - using one of those will alone drop performance to 100-500k range. It's of course much faster to use RDTSC, but then you have the issue that different CPU sockets have different offsets (sometimes large) and possibly also some frequency difference between them. Also older CPUs don't have invariant TSC, so their speed changes when CPU frequency changes.

(Some word of warning about Windows QueryPerformanceCounter: When you test it on your development laptop, it appears fast, because it's using RDTSC behind the scenes. But when it runs on a NUMA server, it often changes behavior and becomes 20-100x slower, because Windows starts to use HPET instead. RDTSC takes maybe ~10 ns to execute and it's not a shared resource. HPET takes 1-2 microseconds to read and is a shared system resource, concurrent access from multiple cores will make it slower.)
>We’re disappointed that ad blocking companies are punishing people on Facebook as these new attempts don’t just block ads but also posts from friends and Pages.

lol they designed it this way. I'm disappointed facebook, but what could I expect from you anyway...
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A mix of consulting, products and bitcoin. Happened to just be in a right place at the right time, and took (mostly) the right risks. Basically I went from zero net worth to 2-3 million liquid, within about 7 years. Also have some other illiquid assets which could be worth more or less.

First I started with consulting, then slowly started developing different apps/products/services, and funded the development from consulting/contracting income. Soon the products themselves gave me 2-3k/month, and I didn't need to do that much consulting any more. As Bitcoin came, I already had some money to invest. I lived very frugally, and invested heavily in Bitcoin when it was around $10 or something. Also I have invested in stocks/ETF:s/etc all the time but those play pretty minor role. Mostly got one thing right.
This was very well written indeed. From the author's biography, she has "co-authored several academic papers in nonlinear optics". I can certainly understand how writers who lack similar years of physics background and experience in reading and writing papers would do a significantly worse job of describing the results of a new study.
Don't forget plants get the energy back from making a leaf in a few weeks. Solar panels take considerably longer. Generally plants are optimized to compete with others in their niche and as such it's exponential growth that's most important not total energy capture.
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Sometimes it seems there is no better alternative, hence the existence of Null Island (http://www.nullisland.com/).
I love that video!! This one is also pretty awesome, I think it is probably funnier in some ways:

https://www.youtube.com/watch?v=FqgRC5sfCaQ
> Then I got married. That threw a monkey wrench into the works! But I'm slowly working thought that ;-)

When you have children, it gets even worse on that front. :(

The bright side is that it's still possible to achieve if both of you have the discipline: http://www.mrmoneymustache.com/
Indeed, "melting pot" makes me think of think-tanks or a busy "scene" area, it doesn't make me think of an actual melting pot, the words themselves doesn't conjure up the mental image that they refer to, so the strength of the metaphor is weak.

Reading Orwell's own writing in this article "like tea leaves caught in the sink" it conjures up a fresh mental image.

One thing I discovered during 6 years of living in central Europe is that speaking mostly with non-native English speakers leads to a necessary elimination of metaphors; you have to use direct words. I can't say "he's trying to pull the wool over your eyes" or "don't let the cat out of the bag" or whatever, because nobody has any idea what I'm saying, and it's not worth explaining. I considered it a kind of mental training, it taught me to speak plainer English.
There's always some uncertainty. What do you want it to return when it can tell the location is Springfield, but no further? Will your suggestion actually stop devs from blindly converting into coordinates?
Hi there,
can you explain to us why you chose to invest so heavily in Bitcoin and Ethereum? What gave you the certainty that they would go so well?
I'm trying to get closer to this goal by renting out rooms in my house. It's not something that a lot of people do and there are legal issues. however it does get me a nice amount of passive income. this is about 1k EUR per month. I'm hoping to get it up to the level of my salary (1700 EUR) within the next year.
It does offer channels, see the linked Docu.

For combinators I don't think those are really needed in the CSP environments because you can do most transformations with normal function calls and normal control flow contructs (loops, if, ...)
Well, it depends on your definition of barbarous is and how it compares to what his was :)
I didn't stop learning to code per se, but I did drop it 3 or 4 times over the course of a few years because the results were far too abstract to appreciate, or to even understand why do I code at all.

Maybe I'm too much of a visual person, but unless I see why does a certain peace of code exists - or should exist - I can't really begin to analyze and perceive it properly. I still can't grasp the backend of the websites, for example.

On the other hand, I easily grasped how CSS works as well as video game code in GameMaker because you can actually see and experience what you make.
Fun way to explore answers for questions like why is football most popular sport
Yes the "C" is for course and the "D" is for dense. All of the CWDM gear I have been exposed to was LEDs, generally actual lasers are much more expensive and you dont need that sensitivity for such loose banding. In what implementations is CWDM using lasers instead of LEDs?
I can't spell Rafe Fines
I agree with you. It's actually a pretty interesting point of view, because I've thought about it too. Once we have enough knowledge to cure aging completely, we will probably have enough knowledge to cure depression and the likes. I support anti-aging research, but I agree that there are quite a few points that need to be discussed.
I think there's a lot of factors in play, and probably more than I am aware of.

The first one I can immediately think of is that ads are quite often not served worldwide. I only started receiving ads very recently, first only a couple but now there's an actual variety. I also started using adblock recently :)

The next one would be the content consumed. While Facebook is pretty ubiquitous, other countries have their own social networks which may have less common or less intrusive ads. Similarly, other countries would consume local news/blogs/etc, which might have the same characteristics. As an example there, visiting NYT/Forbes/HuffPo/etc always gives me a headache(pre-adblock), but our local online newspapers use fairly light and simple banner ads.

The third one would be the level of tolerance for ads. As American media seems to blast ads at a very high rate, American users may have grown extremely intolerant to them. I don't mind our own ads that much, which are comparatively sparse and much less 'attention-grabbing'. Of course, over time, I've grown less and less tolerant(I've already stopped watching TV), but averaged over a whole population there's probably a notable difference there as well.

All three of those reasons also touch upon a pretty central one - the type of ads being served. The more obnoxious the ads, the more likely people are to use adblock, and there's definitely a difference in the "advancement" level of ads in different countries.
It took me an hour to read all of the comments and replies on this post. But I just noticed that "iCloud" Mail wasn't mentioned in a single word.

Interesting.
The “buy” button should always work
Thats new price. You can buy them for under 100k second hand. Have a look on conttoller.com.
If you do need a heli, you are hardly an average person, are you?

And aren't helis mostly used when you specifically need the ability to land on a building or hover?
> I'm annoyed by all these comparison posts that only harp on speed and benchmarks.

You know they are not mutually exclusive right? If you want to learn more about Phoenix and potentially how it compares to Rails:

* A series of articles on the matter: http://cloudless.studio/articles
* Phoenix guides: http://www.phoenixframework.org/docs/overview
* Phoenix book: https://pragprog.com/book/phoenix/programming-phoenix
* Plenty of talks by the Phoenix team, such as https://www.youtube.com/watch?v=MD3P7Qan3pw and https://vimeo.com/131633172
* Phoenix v1.2 (latest) features: https://dockyard.com/blog/2016/03/25/what-makes-phoenix-presence-special-sneak-peek

There is plenty of material that answers a good part of your questions. If you don't have performance or scalability needs, good for you, but that doesn't invalidate the cases of people who need those.

> Rails scales just fine if you throw money at it (a great thing!);

If you treat development time and money as infinite resources, then I agree it is "just fine". But in practice, the bigger your infrastructure, the more you will have to spend on servers and on your deployment team. Your development team will also have to squeeze the maximum it can from the codebase, often by adding layers of cache, so it doesn't hurt availability and usability when you have spikes in traffic. This seems to have been the main point of the blog post as well: given how those tools behave, how will it impact your development and deployment?
I really am surprised that a mobile technology would compromise so much on how flicking the page to scroll works. I'm curious as to what kind of user testing this went through before it was cleared for production usage.
On Reddit [1], Alex mentioned that the single-thread case was not optimized (yet). What do the numbers for multi-threading look like?

[1]: http://reddit.com/r/rust/comments/4x8jqt/zerocost_futures_in...
Disclaimer first that I am not a relationship expert.

I was lucky/fortunate in that my wife and I both have a similar outlook when it comes to financial planning. We both want to achieve financial independence before the traditional retirement age and as such, we keep track of our expenses to ensure we're saving enough each month.

Before we got married, we sat down and talked about these things, a lot. Each relationship is different, but in my opinion, if you're in a serious relationship, openness and honesty are pretty important. Talking about future goals, plans, etc. can go a long way.
The article itself basically says "I break these rules regularly, I'm not perfect either". But I think some people like to point out people's flaws to show off. Orwell's article is sincere.
How are you passing that UUID along the request chain? For instance, when one microservice calls another, does it have to be manually passed in?
DARPA Wants Artificial Intelligence to Explain Itself
Any suggestion are welcome !
That's actually my first JS scripts
Can it not lead to blindness?
The Bridge http://www.imdb.com/title/tt0799954/
What? Any aviation mechanic can work on a the likes of a C150.
Deep learning alone will never outperform natural language understanding
I was assuming that all ads continue to be clearly labeled as such, as they were in print media. And for TV, of course, ads also needs to be clearly labeled.

What I was talking about is, that the page showing ads needs to be fully responsible for their content to prevent malware attacks, and of course, should see to that they are aesthetically acceptable.
Related, I am wondering if any of you have any tips on securing financial independence / passive income that will hopefully be Tech recession proof.

I.e, best way to see yourself through a Tech downturn without taking a severe hit to your wealth.

I say this because I've had recent experience with people losing huge amounts of their wealth, and almost going bankrupt during the Oil price crash.

For instance I know Oil workers who had most of their wealth in oil company shares, a house in an oil related city and lose their oil industry job.

I'd imagine their are lots in tech that are the same, large amount of Tech shares, a house in the Bay area and a job in Tech.

Anyone got any tips on diversifying for a downturn? What shares (if any???) are likely to do well if Tech has a bad patch.
How to Integrate Google Firebase Analytics for Android
I have always heard that <50V is considered low voltage by electrical safety standards, which is why 48V is a good choice.
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This App Lets You Lock/Unlock Linux Using Your Smartphone
Ask HN: Which adblocker do you use and why?
I use uBlock Origin, because it has never failed me, and it uses less resources than other adblockers.
PostgreSQL has been mentioned on EVERY database post for years now. And it always involve an endless amount of condescension in particular directed at those that god forbid choose to use a NoSQL database.

Everything seems to get turned into a competition despite the fact that the world have moved away from the centralised, vertically scaled database towards a more heterogenous landscape.
"One Crazy Ball In Space That Top Astronomers Don't Want You To Know About!"

I can't be the only one who thought the title reeked of clickbait.
I would actually restrict things further, since introducing infinity can lead to unintuitive results orthogonal to computability ;)

Rather than 'possessing' an infinite tape and infinite time, I prefer to think of turing machines as always being allowed to perform one more step, and always being allowed to use one more tape cell. I find this characterisation of time quite intuitive as-is, whilst the tape can be made intuitive by imagining tape factories on each end, which produce more cells whenever the read/write head gets close.

In fact, such "tape factories" have been used to build universal turing machines in the game of life http://rendell-attic.org/gol/fullutm/index.htm
Ethereum seems to have great potential to multiply its value in the next 12-24 months. I think the probability of ETH going from 1B$ -> 2-5B$ market cap is far greater than BTC going from 10B$ to 20-50B$ due to several factors.

My line of thinking has been that in order for the 4% to be meaningful, you need to start with at least a million. Saving a portion from the salary and getting 4% annualized growth just wouldn't have ever achieved the type of financial wealth I had in mind. YMMV.

But now I feel like the time has come to diversify and start reducing the risks. Going from 20$ to 10$ per ETH definitely hurt.
Show HN: Send your friends mean letters with style
Give me less, I’ll pay more
Simple Client/server isn't going anywhere anytime soon. It's too simple to implement and understand and use to die. Good enough almost always wins.
Omg, not java for sure. The important bits will be burried in the boilerplate code.
How about starting with NO language at all. Learn what variables are, what assignment is, how do control structures work. And hey, you've just learned to programm.
At least I learned this way. We had no access to computers so the lessons were more or less what I listed above. On paper.
And when I did get access to the computer I already knew how to program. The only thing I needed was to find out which MSX-BASIC instructions are for the things I want. I. e. I had just to learn a syntax, not the concepts.
Having mastered concepts is also very transferable, especially between the languages of the same family.
Yes! Thank you. I'm sure I've searched similar things in the past but maybe I was too focused on the fact that it was self-published.
WebAssembly will not revolutionize anything.
It's like java where people claim it's as fast as native code, and yet every single program runs like a dog and takes 100 times the resources. Only worse because it runs in a browser.
uBlock origin - both on firefox desktop and firefox mobile.
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Machine Learning Creating a Boom in Digital Landscape
> Are you really arguing that a scribbling numbers on a piece of paper could give rise to a conscious being?

Yes. I find that no less plausible than a warm sack of meat giving rise to a conscious being.
Citigroup fails to halt AT&T use of 'thanks'
I get an error on the demo page:

map.js:173
Uncaught TypeError: Cannot read property 'resize' of undefined

That line is

>this.painter.resize(width, height);

I'm on Chrome 52.0.2743.116
Note: I think this comment was intended for this comment chain: https://news.ycombinator.com/item?id=12274389

(Maybe a mod could move it over - if that works, this reply can be deleted)
Wow, that's fun. No wonder few applications use "/" for hotkey combination. Maybe I should use a different key, say, ".".
Muni bonds are the best way to go for that. You can still nail 4% plus after inflation and taxes there. You're not going to get risk-free anywhere, there's no such thing.
For electrical safety, <50V DC is common definition for ELV. For some (probably business oriented, ie. to do price differentiation for telco equipment) reasons, some electronics manufacturers classify anything over 30V as high voltage.
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I'm surprised we don't see more "use jRuby" replies. Most of these discussions come from businesses "already using Rails". jRuby has immediate, major improvements to performance and many codebases "just work". In my case, I just had to mess with the Gemfile a bit.
You don't need any stuff if you detach yourself from any location. I spent <10k$/y for a quite a while. My approach was to travel, mainly by hitchhiking and staying with locals through couchsurfing. If you think "freeloading"... I've worked for NGOs on various continents, including couchsurfing (when it was still a non-profit) and in the meantime I built up Hitchwiki that is now the most visited resource about hitchhiking.

I think I spent around 500€ per month like this on average. But I have some friends with a more radical approach, which inspired me translate a Dutch website about living with money into English: moneyless.org.

As a side effect, I'm making some money with this specific site (but not with Hitchwiki or other community oriented projects). Together with a few more websites this is making me enough money from adsense and affiliate marketing to do whatever I want without caring too much about spending.

These days that is building up my fintech startup B2B Pay (Techstars Barclays TLV 2016) and spending time with my family.
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It was actually worse than that in the Air France case -- if the rudder inputs from the two pilots were different, they were averaged before being applied to the physical control surfaces.
Given the complex services we already have, services that access complex, multi-source databases of the relational and NoSQL kind, I find it amusing that UI developers are so unaware of the complexities of the back end--complexities that are normally hidden from them--that they think they can be reduced to so many calls. WebSockets don't magically assemble complex back-end data. Amusing in the extreme.
That whitelist can be disabled by simple disabling one checkbox in settings.
good one job !! Impressive
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This is false. You can also do this without microservices or containers. Or also syslog. Just my two cents!
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I didn't have any magical crystal ball, like no one else did. The key transition point was moving the Bitcoins into the Ethereum. For me, Vitalik's early posts convinced me that Ethereum wasn't just another altcoin and it had great potential.

I didn't have any debt at that point and the traditional model of saving portion of salary and getting 4% annualized growth wasn't going to achieve the wealth I had in mind. So cryptocurrencies seemed like it had the huge upside potential I wanted and the worst-case scenario would have been that I'd lose the initial 20k€. I'm fairly opportunistic and risk-seeking. YMMV.

Hard to say what the probability of failure (ie. Bitcoin collapsing or the value of Ethereum being far less than the pre-sale price) has been.
Because as soon as I started using uBlock "Origin", I started seeing more ads and more sites that didn't work at all where they previously worked with ABP.

Because the uBlock "Origin" UI sucks compared to ABP.

Because acceptable ads is easy to turn off with one click.

And because gorhill is a real asshole when you submit an issue. It's now obvious to me why uBlock had all sorts of drama at launch.
I would be interested if there is something out there between New Scientist and 'full on' peer reviewed journals that I'd probably not be able to digest.

EDIT : I am a member if IEEE - if anyone knows a way to get a 'better' Spectrum magazine format please let me know too!
Can't believe people would write (or read!) about quicksand ...
When I started building out the back-end of my latest project, I realized its only purpose was to persist data to a NoSQL database. I had a small epiphany and decided I didn't need to build a server at all - I could just use something like Firebase to accomplish that task.

Now that I'm getting deeper into the project, I need to add in features like PDF generation. No problem! I'll use microservices for that. Well, that means I need to build a Docker container, deploy it to AWS ECS, and configure AWS API Gateway to talk to it. None of these things are what I would consider "front-end" dev work.

Back-end is surely changing, and many of the needs can be shifted to the front-end/BaaS platforms, but there's still plenty of work left! I think we'll see the back-end role transition more toward building and maintaining these microservices and possibly the business logic portions of the front-end.
Doing pretty well from consulting these days, however I can't manage to generate any passive income. Having saved about 30k in the past years doesn't seem to help either, interest rates are ridiculously low. Stocks and bonds are not really my area of expertise so I decided to stick to cash. Investment funds might be an option in the nearby future.