skysight-inc/HackerNews huggingface dataset:
You're spot on actually, recall performance can be significantly influenced by the environment in which the recall is occurring. The closer to the original context in which the memories were formed, the better chance of accurate recall. See https://en.wikipedia.org/wiki/Context-dependent_memory
Hmmm. I think that aiming the power of capitalism at real problems is a good way to go (the cap and trade system of SO2 in the NE being the canonical example: https://en.wikipedia.org/wiki/Acid_Rain_Program ).

I agree the lede was buried, but don't have any trouble with Grantham making a boatload of money helping solve big problems.
I have a Masters degree in mathematics and struggle so much to continue learning in my (relatively ample) free time. I was never good at self evaluating my proofs so often I solve a problem and have to scrutinize it for nontrivial steps made "intuitively".

It's like when you have Calculus and over generalize when entering Analysis or Differential Geometry -- but now I have more structural patterns to extrapolate from :/
Git won because it is technically superior (IMHO, but I've used most other VCS only sparingly). It's well designed, flexible, and fast. Apart from a command-line interface with some unfortunately named options and a "big file issue" (that has never been a problem for me), I don't think there is anything wrong with it.

What do you think is wrong about it? Or have you only "read a ton" but never used it for a while? In the latter case, I suggest you start with the things I mentioned above, and make good use of "git reflog" as suggested by somebody else. If you know git reflog, "delete tree and clone a fresh copy" is not a thing anymore.

> In the FAANG world, there's basically no company that uses Git as-is. It's strength/weaknesses aka tradeoffs aren't good enough for them.

Do they use svn then?
I find these passages thought-provoking and persuasive. They ring True:

> ...Tech died by conquering the world. Netflix is leading a global transition from linear to streaming television. Tesla accelerated an electric awakening among auto companies. But if Netflix and Walt Disney both use technology to stream video, why is only Netflix trading at infinity-times earnings? And if Tesla and BMW “both use battery technology to power luxury cars,” Deluard writes, “why should the former trade at 42 times forward earnings when the latter fetches 5.6 times trailing earnings?” Good question.

> ...Some of the largest tech companies have exhausted their main markets. Apple and Samsung may have reached the smartphone plateau, as phone sales seem to have peaked. Facebook and Google have grown to dominate digital advertising. But in the U.S., overall ad spending has historically averaged no more than 3 percent of GDP. How do you grow [faster than the economy] in a sector that isn’t growing [faster]? That’s easy: You don’t. There may be a Malthusian trap in the attention economy. Eventually, revenue growth bumps up against the natural limitations of population and waking hours.

> ...Tech stocks have fallen, because the media mountain has been scaled. Now the largest tech companies aren’t standing at a pinnacle; they’re plotting on a plateau. The challenge of owning the entire life cycle of our spending habits—that’s the real summit. And it’s just up ahead.

The implication for investors is obvious. If "tech" is no longer really a separate fast-growing sector, but rather something that has become pervasive and cannot grow for much longer at a faster rate than the rest of the economy, then "tech" valuation multiples will converge with "non-tech" valuation multiples, and there will no longer be a clear-cut distinction between the two groups.
Frama-C is similar; every one says to use the gui, but I find it horrible and just use the command line while feeling like a cave man.
> advocating the use of __builtin functions vs standard functions

It wouldn't say it "advocates" for the use of builtins. The author demonstrates a problem they had (including math.h made their compile times 2x slower in c++17 mode) and shows their solution, and advocates changing libc++ so that c headers don't pull in c++ stuff.

In any case, the snippet you object to uses the builtins if they are available, or falls back to math.h. It's a hack to avoid math.h when it's slow to compile, but stills seems pretty portable?
If we are talking about content you can find plenty of advice here or elsewhere. But do yourself a favor and pay a tutor and/or find a study group. As in writing, dancing, etc. you cannot evaluate your own work good enough.

You will not improve your math watching youtube videos and reading books. You need to produce stuff that pass the "sniff test" to your colleagues.
I'm already seeing confusion around the name "5G". The issue is that new dual band wifi routers broadcast at both 2.4GHz (the old way) and 5.x-5.3GHz (the new option). And they're calling that new option "5G wifi". Adding to the confusion are some people bringing up the idea that "5g Cellular data" with obviate the need for home wifi at all.

Further still, the new "5g Cellular" standard can include use of the 5GHz frequency band.

Actually, in writing this, I'm realizing I myself may have some understanding incorrect. So please correct me if you know better.
I don't understand the problems.
Want a better hash map ? Use whatever makes your day here : https://tessil.github.io/2016/08/29/benchmark-hopscotch-map.... ; they are all header-only just like the standard library's.

Want a vector that does not initialize its elements ? Ask and thou shalt receive: https://github.com/aguinet/pector

The whole point of C++ is to make it easy for people to write generic libraries beyond de standard base provided by the stdlib. So why won't you use those ?
The obvious route for self-study is to go through Halmos or Axler and Rudin, plus all additional materials and study aids such as Gelbaum & Olmsted, emulating the most popular Harvard Math 55 incarnation. Another nice Math 55 incarnation covered Hubbard & Hubbard, which is a wonderful book.

Although Math 55 is tough, if you are self-paced and have a bit of mathematical maturity I think it is doable. It's also an excellent pure math bootcamp that gives you a solid foundation to branch into any other pure or advanced math topic.

I have gone through Halmos & Rudin myself, and it is a great experience. However, if your end goals are more geared towards pure CS, an alternative route might be much more appropriate. Very interesting and promising parts of CS, such as formal methods, and the foundations of mathematics themselves depend on abstract algebra and logic: https://ncatlab.org/nlab/show/computational+trinitarianism

A minor problem is that beginner literature is not so polished as it is relatively young. But there are some excellent textbooks nonetheless. Some below. Other suggestions welcome:

* http://www.cs.man.ac.uk/~pt/Practical_Foundations/

* https://www.mta.ca/~rrosebru/setsformath/

* https://github.com/ademinn/ttfv/blob/master/2006.%20Sorensen...

* http://www21.in.tum.de/~nipkow/Concrete-Semantics/

* http://adam.chlipala.net/frap/

* https://softwarefoundations.cis.upenn.edu/
In this case, the crash occurred because the overflow error threw an exception, which the software was not prepared to handle. If the overflow check had been omitted the rocket would have launched successfully. (Not making a statement about what should have been done, here.)
Show HN: Multicluster Scheduler for Kubernetes
I wonder what the reaction would have been if he/she had written a blog post explaining how moving from list to numpy.array for storing numerical data in Python resulted in massive performance benefits. You gotta admit the situation is kinda similar.

What is unfriendly about custom allocators? Note that in this specific case you don't need to write any allocation function, you just have to re-implement the construct() function with something that does not value-initialises if no construction arguments are provided.
I think the author is just saying that he doesn't care about the other project. He is probably having fun. Let him do his thang.
I find that difficult to imagine with perishable items. I don't want my milk sitting on my front porch at 30C for 2 hours until I get home, and neither do I want my lettuce sitting for the same amount of time at -30C (yes, I live in hell).
I’ve never understood how infinite time dilation jives with black hole evaporation:

> If we take for example the latter observation of unbounded time dilation seriously, we come to the conclusion that in the moment that we spend on the horizon all time passes for anything outside the black hole. The end of all things happens in the rest of the universe, and in fact after the moment in which we enter the black hole, there is no way back.

> However, if we consider a black hole of the same mass, things look rather different. As a (partially) quantum object it radiates and evaporates within a tiny fraction of a second. All its mass converts into energy, which results in an explosion three times stronger than the bomb dropped on Hiroshima.

How do these two things mix? A particle experiences asymptotic time dilation when it crosses the event horizon and the rest of the universe ends in that moment. Then the black hole evaporates and lo and behold the universe is not ended.

Yeah, the particle that went in got annihilated and never actually came back out. Sure. But if the black hole does not survive until the end of the universe, then it seems fundamentally impossible that the particle in question experienced unbounded/infinite/asymptotic time dilation. The particle’s annihilation must have happened by the time the black hole evaporated. And yes, time is relative, but it doesn’t run in reverse.
Yep. You can definitely "grow" topsoil very very quickly. Similar to the ratio between the productivity of land for hunting-gathering and agriculture.

Source: Farming & gardening background in the midwest.
Leaning math is primarily a solitary endeavor that takes time to learn properly. If you are an adult starting from basic algebra be prepared to spend at least 2 years of your life in order to get to where you need to be in order to begin physics. (Ie Allegra, function, trig, calculus) You have lots of options but assuming you don't want to go back to college these are 3 tools that are 100% free and as good if not better than any of the paid options.

1 Every day on this site
https://www.khanacademy.org

2 Use this for graphing
desmos.com/calculator

3 Use this to supplement (ie free text)
myopenmath.com
Technical Marketer at Voyager HQ
I went back and learned a lot of math recently. I found the 3Blue1Brown youtube channel to be hands down the most useful for developing intuition.

I honestly don't think there is better mathematical content than his being made.
I would also recommend (8 lectures)

Leonard Susskind Topics in String Theory

https://www.youtube.com/watch?v=NZ-ElsvYKyo

Despite the name this is largely about general relativity and black holes and other horizons. The best detailed description of black holes for laymen (assuming you have algebra and basic calculus) I've ever seen.
No. 1 state for female entrepreneurs is Texas: Study
Thanks, perfect!
Just to add, it's also worth finding someone who might be a bit below you in terms of maths ability. If you can explain the concepts to that person, then you know the concepts.
iOS's default video player controls have done this for eight years: https://lifehacker.com/5811660/how-to-control-the-audio-and-...
If I'm understanding you correctly, that's how iOS's native video player works.
It just took a minute of searching to find the other collections. Does Troy wait for people to send him specific files? https://raidforums.com/Thread-Collection-1-5-Zabagur-AntiPub...
Yeah, somebody signed into my Netflix account that I reactivated after years and years of inactivity. It was the only site that was using a really old password that's in this breach.
> Well, how do you propose money be prevented from influencing politics? (In a way the preserves present-day extreme economic inequality, something that I'm not at all convinced is something we should endeavor to save).

You're asking a massive question. How should we stop money from influencing politics? By understanding how money influences politics, and looking for ways to reduce that influence. Lobbying is an obvious example, people with more money should not have their voices amplified in politics, so that could be delegitimised. For less obvious questions like how to prevent the wealthy from funding more biased news, I have some ideas but I don't have a perfect design here ready for you and I don't think some random guy on the internet not being the world's greatest systems designer affects whether money in politics is the problem.

> I'd wager reducing inequality is a problem that's easier to measure and there are better understood actions to accomplish the goal.

First off, reducing inequality is a proposed solution to the problem, not the problem itself. It sounds nitpicky, but that's an important difference because we have to know if successful application of the solution actually solves the problem. We've identified a couple of different problems to solve - corruption in politics and poverty. So, does reducing inequality by highly taxing the wealthy increase the average living standard? I don't think that's a given. There are a lot of factors at play - it would potentially decrease investment capital, disincentivise entrepreneurialism, and the money taken from the rich may not even be enough to make a difference - the idea that the 1% own 50% of the wealth is a bit misleading because much of that value is based on shares in the companies they started, which can't necessarily be liquidated for their paper value and definitely not all at the same time. Personally, I think the idea of "owning" a company is one of the drivers of these bizarre numbers and the existence of billionaires. I guess I'm a bit of a syndicalist in that way - I think equity investment shouldn't exist and companies should not be considered an asset. So if you wanted to reduce wealth inequality, that dubious means of acquiring massive wealth might be a good place to start. But I could bitch about wealth accumulation and representation in an economy with stock markets all day.

> But demanding we focus on a problem that we don't know how to solve, and refraining from enacting "less optimal" solutions in the meantime, is an argument for inaction and letting the perfect be the enemy of the good.

That's a blatantly incorrect argument. You can advocate for increased taxes on wealth, or you can advocate for making lobbying illegal. What I'm arguing is that the problem we need to solve is multi-faceted and fraught with complexity, and the solution may not be straight forward. Reducing wealth inequality is a simple solution that targets a symptom rather than the root cause, so it's liable to be ineffective. It's not even like it's not been tried before - TFA posits that marginal tax was 90% in the 60s yet I'm pretty sure that life is better now than it was then.
You're being obtuse on purpose. The sentence you claim is wrong has only ever been used to describe performance at run time.
They only really have first mover advantage in the US, though. In many countries, internet ordering of groceries is pretty old; Tesco started it in the UK and Ireland in _1997_, for instance, and I'm pretty sure there were Minitel-based grocery delivery services in France before that.

The US market probably has special practical problems that European markets don't have (low population density outside about five cities, in particular), but it's hard to see how Amazon will automatically beat the likes of Tesco in this just because they're a tech company.
It's an optimization strategy for them between actually getting paid and not getting caught.

Buying bitcoin is actually pretty easy and they help you figure it out in the email as I already commented here https://news.ycombinator.com/item?id=18939713
Nice work! As someone that uses https://github.com/sampotts/plyr in one of my projects (and react-plyr), what are the main differences between the two players & designs?
Optimizing std::hypot for simd arguments
> ...[grocery stores] choose to uphold their brand images

I'm not entirely convinced of this. ALDI grew and became popular because there was no fluff, just a limited line of cheap products sold efficiently in a store with a layout designed for efficiency. Now they are rearranging stores to be like everything else, creating "sales" to get people with poor impulse control to buy, and pushing their image of being the best "deal" while upping the price of their increasingly varied produce. They might be selling off their brand slower than manufacturers did, but the slow brand decay seems to be happening to me.
Archive link for those unable to view the article: http://archive.is/0KJyA

Also, I had to cut a word from the title to fit HN's length limit. I hope that's OK.
Yes, I think that's what is being said.
A lot of the usb hifi dacs have their own clock for this exact reason
> You gotta admit the situation is kinda similar.

I disagree.

1. Everybody knows Python is a scripting language, and trying to do heavy computation without handing it off to a library is going to be slow.

2. A vector is the de facto data structure for this in c++. In Python, numpy is effectively the de facto approach for math.
Here (Ireland), where online grocery shopping is common, you just select a two hour window when you'll be home for delivery.
The Art of Snaring Dragons (1975) [pdf]
There were some worms thawed out alive just last year who were claimed to have been frozen over 40,000 years.

https://siberiantimes.com/science/casestudy/news/worms-froze...
I wish it was written in Kotlin!

tbh I don't really care in what language is written, but I would really like to create Apps with Kotlin using Flutter instead of having to learn another language that it's (in my opinion) a bit inferior than the one I'm currently using.

I can see myself using flutter as a thin UI layer and just forget about the mess that Android UI layer is...
There is probably an ideal amount of high paid jobs in a particular area. Too many will push up local property price inflation.
Had the same; scary thing is the unknown number of people who will just pay / take everything in that email seriously.
'dirty secrets' of tiny houses
https://github.com/cschied/q2vkpt/blob/master/src/refresh/vk... is an interesting read.
I would put GitX in the top of my list. Best Git GUI IMHO, and it’s the piece of software I miss the most when I’m on windows.
Just as vast fortunes were made during the financial crisis of 2008 by selling the markets short ( see the film "The Big Short")
I would expect there are people betting on climate change continuing down its current tragectory, and these people now have a vested interest in making this happen.
I don't know how many other billionaires are putting their money on the pro climate change side but wouldn't a smart investor diversify their portfolio by betting on both the pro and con sides of climate change?

I don't know what the form of such investments would take but can think of a simple one being investing in real estate northern regions where temperatures are currently too cold to support agriculture. Possibly an investment in water desalination plants would also see a gain from climate change.
I'm sure there are many more better examples, my concern is that for every billionaire looking to save the world, there is another looking to make a buck off its collapse.
So what happens when more of these profateers decide to use their vast fortunes to tip the scales further towards the collapse rather than salvation?
The datasheet for the components almost always describe the dimensions and often the recommended footprint (landing zone). Depending on the industry different additional standards apply (for example “space grade” have increased focus on reliability; mobile devices on area reduction; etc)

CAD packages ship with or have collections of common footprints, but be aware that there aren’t truly standards and two footprints might be named the same but have quite different dimensions (even within a single manufacturer). It is rare but it happens and thus it is worth checking.

KiCAD has a large repository of common footprint layouts which I believe is of a reasonable quality, but I have never used them myself.
Pretty sure there would be water.

Pretty sure not everyone would like how.
> One problem on Linux is that the native toolkits (Qt and GTK) are just garbage.

I think a lot of this stems from the fact that Linux (or BSD for that matter) don't really have a "native" toolkit.

Also, I think people overestimate the importance of using native widgets. Anecdotally I would say that only about half of the apps I use on a daily basis actually utilize the native toolkit. Microsoft Office, Adobe Reader, IntelliJ IDEA/Android Studio, Visual Studio Code, Chrome, and Firefox are great examples of very successful software that are not built using the native toolkit.
But electricity has the advantage of being easy to convert to. Cars last on average 20 years. If all your cars are electric but your electricity is dirty, you can legislate that electricity needs to be cleaner, affecting only a few players, rather than having to convince millions of car owner.

Look at what happened in France when the government changed its mind on which carburant is cleaner and tried to force millions of consumer via taxes.

Also, keep in mind that China is trying to get cleaner electricity as shown by the giant damns they are building.
Looks cool but it ignores what Dart brings over everything else: Hot reload.
RE: Your edit

I think that's close as well. One of the interesting things I've noticed is that people who are participating in the gig economy seem to be participating in almost ALL of the gig economy at once.

I've met many people who do all of the following almost every day:

- Drive for Uber/Lyft
- Deliver packages for Amazon
- Walk dogs for Wag/Rover
- Rent a place on AirBnb
- Do some stuff on Task Rabbit
- Deliver food for GrubHub/DoorDash/etc...

I can't imagine these folks are any particular loyalty to any of it, nor are they developing skills in any of these in a meaningful way.
Can you test AWS lambda properly nowadays?
you've missed the second half of the sentence. The rest goes into investment.
NYTs photos in the Nairobi attack dishonored the victims and failed journalism
You will not become good at math watching youtube videos and reading books.

That depends on exactly what you mean by "become good at math". If you're talking about "becoming a mathematician" and doing original research in pure math, then you're probably right. But if one means "learning existing math well enough to apply it to a problem", I would argue that one can learn this stuff just using books, videos, etc. At least up through a certain level.

That said, I do encourage the idea of finding peers to work with. I used to coordinate a "math study night" at the local hackerspace for that exact purpose. It fell off because I got busy and couldn't keep committing to it, but generally speaking, it is a good idea to have other people to work with. I may well try to find a math major from UNC to hire as a tutor at some point as I keep working on this stuff.

And if one can't find somebody to work with in person though, and they need, say, a proof evaluated, there is the option of using math.stackexchange.com or the like.
I'm glad that OP changed the title from the goofy "Worse than you thought" that TFA has. As usual, when USA military keeps secrets, a prudent person assumes the absolute worst. This is actually sort of good news, in that we can probably determine at this point that there wasn't a meth-fueled sex orgy going on the bridge at the time of the collision. (although, those urine bottles...) Now as for the ongoing binge at 7th fleet HQ, that probably continues unabated...

Navy Times should hold its readers in higher esteem. Of course we assumed the worst.