skysight-inc/HackerNews huggingface dataset:
Ceramic resonators are cheap,narrowband filters used in inexpensive FM radio (etc). If you put one in the feedback path of an op-amp you'll meet the criteria described by the physics definition but putting that same component on the input of the op-amp may result in an undetectable signal.
PDF, https://srg.doc.ic.ac.uk/files/papers/chopper-icse-18.pdf
Me too. I always tend to wake up the exact same time (right down to the minute) every single morning, no matter how early or late I sleep. And I don’t set an alarm clock and use blackout curtain.
I guess it's similar to the Czech Republic - old ones are allowed to remain in operation, but you can't build new ones except for the places GP listed.
I think this comment, at the end of the readme, makes too strong a claim: "Write a failing test and see it fail so we know we have written a relevant test for our requirements..." While a test that passes at this point is clearly not a valid test, relevance cannot be assumed from its failure. Tests are not immune from simple coding errors like using the wrong comparison operator, and beyond that, it is possible that the programmer has misunderstood precisely what it means for the intended purpose of the code to be satisfied. I find that a few percent of my tests and assertions are actually incorrect as first written, for both of the above reasons.

If you are thinking that I am misunderstanding the purpose of unit tests in TDD, that it is only to check that you have written the code that you intended to write, then that would raise the question of how you address the issue of fitness for purpose - these are two distinct issues, even though the goal is for the former to match the latter.

Also, while a test may provide an easy to understand description of the failure, there is no guarantee that all possible failures are so described.

Teaching testing as a fundamental part of programming is important, and I like this approach, but I think this particular claim goes a bit too far.
Then this information might be wrong, I only heard it from some employees.
It’s like people who jump in an a discussion about electric vehicles then filling the comments with “I won’t buy one until the range increases“. Their criticism is also legitimate.

People should simply realize the product isn’t for them.
Stick a Magnum Torch somewhere, or just turn off monsters entirely.
Citus is a sharding solution, not about multi-master or high availability.
IMO, the downvotes are a big problem with reddit, unfortunately.

If people actually followed reddiquette (downvoting posts that do not add to the discussion) the system would work great. However, a large majority of people will just downvote what they disagree with. There is no way to keep this behavior in check.

What happens is that counterpoints that do not align with the majority 'party line' are rarely seen on reddit, and although the hive mind is often agreeable to me personally, I need to see dissenting viewpoints in order to get a nuanced understanding of any complex or opinionated issue.

I've pretty much eliminated reddit from my life in favor of HN (this is my first post, actually) and Metafilter and I couldn't be happier.
Sadly that feature is no longer available. >_<
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So does my body itself need to be protected from seeing light or just my face/eyes? I'll just get a sleep mask.
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No, but they are appointed...
Any other outlets for AgTech?
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Perhaps extra unnecessary stresses on the hinges/barings that need to move only when it's going past the top or bottom?
Sometimes they try to scare people because there are actually "hidden" rooms (for technical stuff) and they don't want them messing around there.
Facebook groups.
I saw one of these at a bicycle shop in Bern circa 2006; was too scared to try so took the stairs.
These traditional relational databases are fundamentally single-master systems. They have all gotten better at replication and failover but multi-master is not something that just be bolted-on and will never go well.

Most companies don't really need multi-master either, the performance level of modern servers is so high that usually failover is good enough. If it's really needed, it's better to look at options like CockroachDB or TiDB instead that are built from the beginning to be multi-master.

Also it's unclear from the article but why would the followers be so out of sync? Is there a really bad network? Especially if they set quorum writes on the master then at least 1 follower should always be up to date.
> Personally, I wouldn't recommend Wolfram Alpha, or anything proprietary. If you have some programming knowledge (as OP is likely to), Sympy and Matplotlib are much more capable and controllable (and free!).

If one doesn't mind proprietary, though, and wants even more capable and controllable, Mathematica on a Raspberry Pi is pretty cool, and is free (beer) and is included in the default install of Raspbian.
An author of a book is still a teacher... we’re just debating the personalization of the teaching at this point.
I started programming (mainly web development) about 20 years ago.

I think the lack of current day productivity is due to there being so much more input available. 15-20 years ago you were forced to get into the mix of things and try things out because there weren't 800 blog posts and 227 youtube videos on the topic you're trying to learn.

Nowadays it's too easy to research yourself to death without trying anything because you're making decisions based on no experience, but instead experiences of others.

In attempts to find the perfect solution, you often do nothing. Always remember that you can get a lot done without it being perfect.

I look back at some old PHP projects I did in the early 2000s. Projects that have 7,500 line PHP files with mixed in HTML, JS, PHP, SQL, etc., but the funny thing is, some of those projects are still running today, unmaintained for 10+ years but work flawlessly on some old crappy shared host. Drag / drop FTP deploys with no version control of course.
2000 tests in 4 minutes actually sounds really slow. We use postres and our Django tests run at roughly 9000/min on 3 year old laptops.

Start your pg container once and use Django's -k flag when running tests to avoid start up times. We also take care to separate DB access from business logic and to unit test those separately.
Developers:What are your opinions about stand-up meetings?Results will be shared
HackingTeam is back  probably it never stopped its activity. Watch Out
Quoting the article, "The number of refugees worldwide, for instance, has climbed vertiginously over the past few decades, and is now approaching levels not seen since World War II."
> Now the problem with 6 months is that the engineers typically leave after launch once their target of raise and promotion is met and the company suffers to varying degree.

I think the article has it right when it referenced the importance of "the ability to reward engineering work that had little visible outcome". Rewarding mostly shipping (or launching) seems to be broken in particular, I'm not sure rewards themselves are entirely ineffective.
hilarious, it was literally only a couple days ago I was digging into seeing what the current state of Bolo was. I miss Bolo so much, I want it on my xbox or on Steam or anything. if Target can sell a single-purpose Oregon Trail handheld, why can't we have Bolo?

and that's a great article, I remember it quite well. at the time it was written, I was working for Lotus/IBM in Cambridge (no not that one, the other one) and the company had offered us all experimental free ISDN so, yes, please -
and, yeah, speed good latency bad. go fig.
What is the significance of the different vX folders? These are just versions? Maybe I am reading this incorrectly?
> ...I would have guessed that it's easier to organize a company when people are motivated by (and responsive to) money

I'm thinking it goes the other way. It's hard, once you get larger than Dunbar's number, it's very hard for organizations to understand what everyone is up to and what they think about it. The straightforward financial rewards are to keep things simple for the people in charge of strategy and organizational health in general.
Or just use a Hue hub
That’s a demonstration project and to the extent that it’s “deployed”, so are tokamaks.

Hydrogen may be feasible for peak balancing but it seems correct to say that it is not currently used this way.
With PHP there are a bunch of people who put PHP fragments in a database and pull that together with some queries, append and eval it. I wouldn't be that surprised to find someone doing it with PHP fragments echo'ing some JS.
Having dabbled in web development for 15+ years, I feel like there can be a lot of pain involved in getting a dev environment set up and configured correctly for a project these days. But to me it is worth it: the resulting workflow becomes as simple as it used to be in the old days, except there is now much more power and flexibility available to me as I work. I sure hate debugging some BS related to a nested dependency in some random package, but I like having my code linted and compiled to ES5 meaning I can use modern conveniences without too much panic on the cross-browser front. I think over all I'm a lot more productive with the new tools.
There's one at the Rosa Luxemburg Stiftung in Berlin but visitors aren't allowed to use it.
Feels so true... unfortunately
Maybe it's my small scale experience, but so far, multi-master relational databases with automated fail-over seems like a lot of risk for just a little payoff. If you can handle the risk, and the operational/development cost, and you need the payoff, go for it. I'm not in that spot.

If I have a master01 with master02 replicating as a standby, I can switch between these two masters within 5 - 15 minutes depending on my setup and at what infrastructural level I do the switch - I could reconfigure the application, switch a dns entry, use a load balancer like maxscale. It's downtime, but it's a low-risk recovery with well-known impacts.

With a multi-master setup, I have to do at least two things: First, I must ensure my applications transaction-safety. Read-Write splits with an application with bad transaction management is fun, and write-splitting will end up with even more of a mess. And then I need to setup and operate the multi-master setup, which is a non-trivial decision and selection imo. Just look at the number of possible solutions for postgres.

This in turn allows the system to automatically failover in case of trouble - which my current infrastructure would have had to do 3 times over two years, and it would have helped 2 times at most. Except if the failover itself fails and ends up harder to handle than the database failover, like in your case or in other really scary postgres failover horror stories.

And interestingly enough, in our b2b context, our customers actually prefer a well-known, low-risk failure plan, even if it is 30 minutes of outage.
No, absolutely not. It’s myopic to even entertain the possibility. At least in web dev, which I have experienced.

For some reason people still love to criticize browsers, even though they have improved dramatically. Around 2000, every UI required two or three versions. Once you got it done in Firefox, you would start on the IE version, which would take almost as much time as the first implementation. Then, you’d repeat the process for each point release of IE.

On the server, rails was the big revolution. The big achievement of DHH wasn’t so much techical as social: here, you had an extremely well-curated set of best practices, smuggled into your project under the guise of a framework. Before, you’d join a team and find the database password was in a switch block three levels deep in config/real/colors.inc.php3.~bac.php. Suddenly, you could join any team and know your way around the codebase on the second day.

Many other things that used to be major work items have become trivially easy. It would routinely take me a day or so just to get somewhat recent versions of Apache, php, and MySQL (and all their libraries) to compile on a new server. You’d encounter all sorts of difficult-to-debug networking problems when moving to production. There were certain tasks that seem like they should be trivial, but were actually terribly difficult to pull off in the web stack, such as chats.
Yeah, it's a factoid that you usually hear from people surrounding places that have one installed, but given that I've seen more than 3 in person, it's certainly not true.

There is a list in the German Wikipedia[0].

[0]: https://de.wikipedia.org/wiki/Liste_von_Paternosteraufzügen
DigiCor.io is also a well established crypto index Fund
I agree that game designers are also trying to make a system that's a good game. But I do understand GP's point here, insofar as the designers have to build the system within a certain frame of reference.

As an adjacent example, City Skylines is a pretty fun city builder. A huge simulation, down to very complex traffic models. You can build sprawling cities with a bunch of highways.

But it's extremely hard to build anything that replicates old European cities, or denser cities like in Asia, because your smallest useful road is very big in relation to the buildings. The tools given to you basically point you directly to American-style zoning that leads to suburban sprawl and huge highway systems.

In a sense, that's the point of the game (to make you fight traffic), but it's difficult if you are trying to build a certain kind of city that we know exist and are, in fact, "better cities".

The simulation presents a certain worldview of how cities are built.
Why is that relevant to the question?

All it means is that you only have to look at them once, at the beginning of the solve.

But since computers have memory, that’s true for all the tiles.
Since it's non-stop, wouldn't this take more power than modern elevators? Why to keep running large number of them despite other concerns including safety? One or two kept in a heritage museum is understandable, but this large number is a bit hard to digest.
Finance guy here: the productivity in finance has sky rocketed compared to 20 years ago. More computing power means quicker and better decision making. Higher level programming languages has translated into much quicker deliveries of new stuff. Quality tools has reduced a lot the needs of relying on other people.
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I felt that I had better tools 10 years ago...
DigiCor Asset Managment is also a well-established crypto index fund.
Precalc basically covers algebra and trigonometry. From my experience as a CompSci major, euclidean geometry is not really necessary.
When people talk about things you can't say in tech companies, being in a greek organization is one of them. I would never advertise the fact that I was in a fraternity for fear of how people would perceive me. People have a tendency to blame a group instead of the individual for bad behavior. I don't need my workplace to be "fun", I'd rather do interesting work with smart people. I can have fun when I'm not working.
What I see is that a lot of people feel the need to always look for new tools and technology to fix their problems, often causing them to get in a big loop of constantly finding new issues and challenges.

My biggest challenge these days if finding the just right amount of "new tools / solutions" that I can get control over, without losing focus on the problem I'm actually solving. I often find myself "too deep down the rabbit hole", and am getting more and more comfortable with just cutting all the "cool new stuff" and find another angle to get things done. 9 out of 10 times you can find a very nice solution within the technology you master, and it's best to ignore that "I need to use cool new stuff"-itch.
FFmpeg is a great project. Interesting how it interprets the embedded artwork as 'mjpeg' in your pic.
I know people are recommending a lot of books here but I want to say this, I know a lot of you guys might going to shit on me but telling someone about 5-6 book in order to self-learn maths is never going to help.
I see that when someone people ask for help instead of relating what he is really asking for that he wants to understand and learn math people start telling the names of these books that they knew about not thinking about the effect that straight up throwing 6 book titles will do no good to the person.
So now I have defined the problem I will tell you only one resource I know its bit of understatement but I think Learning math from Khan Academy would be sufficient for you.
And once you find something on Khan Academy and you are done with it. I will recommend you this site www.brilliant.org
And if you still want to practice just search for test question papers and cheat sheet on the topic you want to practice.
Print the cheat sheet beside you, and do as many questions you can with the help of cheat sheet.

To the person who is asking the question and people who are writing the answers I just want to say that knowing a lot of good resources to go through, is not the learning.
Now I see this thing happening everywhere, people want to know about the process so much that instead of doing what needs to be done they kind of start storing this metadata of the process and this thing is happening a lot on the internet.
People know a lot of resources, a lot of tutorials and video and a shit load of things.
But when it comes to execution and practice I can hardly say only a very few might have gone to complete what they have started.
I am saying all this because I have gone through this cycle myself I have wasted 2 years of my life. Collecting resources related to ML, web development, Math, Psychology, Philosophy you say whatever you find interesting I will tell you some famous book or MOOC course on that.
So I will ask everyone this question take a look on 1 back of your life, if you guys were trying to learn anything do a retrospective whether you really have learned anything, write things that are going right, right things going wrong and start doing things, making project, solving problems really doing the things not just trying to perfect the process.
I can go on but I think I have made the point if I keep writing more I think I will contradict myself that it's not about what and how info you get it's about you get something actionable out of something.
If some 2-minute video gives you something actionable to do rather than going through a 2-hour chapter in textbook there is no point of going through 2-hour chapter.
Knowledge is all about applying not learning the facts and saying it around to your friends I know it feels good but nothing comes out of it in real life.
has anyone got a PDF or EPub of this?
Taming huge collections of DOM nodes
Kind of forgot the answer the question: Not at all!

The power you have these days over the complete spectrum of software is just magic! You can build a whole new platform / application in days! It's a wonderful time to be in this industry and I love it!
Your task is to keep your house at a steady 70F when you're there, and 55F when you're not. Can you do this task more quickly now than you could 20 years ago?

Your task is to assess your bills and financial health, including outstanding balances, account balances, interest rates and dividends returned.

Your task is to determine the weather forecast for this afternoon.

Your task is to turn on your computer and download a full-length film.

Your task is to design, implement and deploy a data-driven application with a web UI. You must find and allocate hosting. The UI must validate user entries and provide feedback.

Can you give some examples of tasks that take longer to do today?
cmd-i to open an extra window with artwork and meta info? I'm working on that. Still haven't figured out if it should show the info for currently played track (and switch when next track starts) or the one that's selected in the playlist. Or some special "smart" combination of the two... what would you expect to happen?
I wonder about the effiency as well : gravity is continuously working.
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Yes, the same-origin policy is just meant to prevent one website from accessing/using the cookies of another website. It is not designed to prevent web applications from accessing network resources.
> those exposed to more than five “lux” of light each night had higher rates of depression

Light can be measured, depression cannot. It barely even has a definition, let alone quantifiable rate. I'd sooner believe that auto-playing videos had a stronger link to depression than lux.

Random theory... Maybe depressed people are highly sensitive to the world's problems/suffering both in immediate and wider environment, their antennae picks up this instability that manifests as internal trauma, anxiety etc. Someone should do an experiment to see if isolation for a few weeks influences depression rate; avoidance of all news, no phone, no internet, no people. Get ready for "Study finds extreme boredom effective anti-depressant".
When working in Deutsche Bank in the '90s I frequently used one of these in the building and had the same question (but no Wikipedia). We put a piece of tape on the floor of a car that was going up and saw it on the floor when that car was going down. (Note this was necessary because the cabins were completely carpeted and there was no discernable wear).

There were also no signs stating that you shouldn't ride over the top ... so we did and probably would have even if they flipped.
Video games are a vice, not a hobby.

Giving your child video games is like giving him beer. (I learned this from bitter experience.)
A compositor doesn't create a separate image for stuff like this. Every window is rendered into a texture and things like thumbnails are simply a small texture-mapped quad; it's done for each frame by the GPU.
I think yes and we were more focused on the task to achieve but on the other hand, computers were dead slower than today's ones. I remember launching tasks for a whole night (for example generating a mandelbrot 720×348 MDA picture near 1984 on IBM PC) and checking the result the following day. Now we can code (IDE with watch mode) and see the result in realtime as we can see on Live Coding session video on YouTube.
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I think it's more that there's so many distractions now that a lot of people spend the whole day doing practically nothing.

Maybe in the past, it would take a whole night to do taxes. Today it would still take the whole night to do taxes, but three quarters of that time is going down the rabbit hole of googling tax exemptions, etc.
Yes, the quality of the material you use is important.

A good teacher can quickly direct you to appropriate materials for your personal needs.

A novice learner is generally unable to identify what is or isn't poor quality (hence the OP's question).

[Edited to add: This forum has recommended certain materials, but we have no idea whether they suit the OP's needs. There has not been enough two-way communication with the OP, even if the OP has made a good effort to clarify their question.]

Using a teacher to bypass this step of identifying materials is way more efficient and... saves you weeks of table head-butting.
I don't know but it eventually bogs down the computer. Fan starts running hard and everything's slow until I close down a bunch of tabs.
That’s also a reasonable response and if I had a conversation about EVs with a large group of friends, I would expect one of them to make that comment. I would not expect the person with that sentiment to simply walk away rather than engage.