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sklivvz1971

2,632 karma · joined March 19, 2011

CTO at BaxEnergy/Yokogawa (ex Stack Overflow).

All opinions are my own and do not represent my employer.

meet.hn/city/it-Trento

Socials: - github.com/sklivvz

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sklivvz1971··on Jev-Leftpad
Uses JEV to do something that's one line of code. Also, "leftpad" was a useless package from years ago that many important packages used instead of writing the code themselves. Its outage at some point broke a lot of packages.
sklivvz1971··on I vibecoded a production grade internationalization library in 2 days
I never said otherwise, but "production-grade" means it's not a toy -- the features and the way it is built is meant for production use and not a demo.
sklivvz1971··on Live coding interviews measure stress, not coding skills
I am the "grand OP", the guy who was called out by the post. Statistically, only 20-30% of the candidates are nervous and about half of those end up passing. So we see no bias due to nervousness. On the other hand, the people that do not pass, in large part not nervous fail for different reasons:

- some are completely and utterly incompetent (they can't write a line of code at all)

- some write some code but it's just bad quality or they are incredibly slow

- some lack basic notions we require (e.g. don't know what a byte is)

- some blatantly cheat with ChatGPT or other tools

- some rage quit ("how dare you ask me to code")

- some fall into deep rabbit holes, overthink everything and make a mess

On the other hand the people that pass:

- all of them solve this in half the time we give

- even if they are nervous

In other words there's a chasm between the hires and no hires. Assuming that this interview only measures nervousness is a completely wrong notion.

BTW if you are interested in helping us transitioning the world from fossil to renewables, we are hiring: https://jobs.intellisync.it/

sklivvz1971··on Why Tap a Wheel of Cheese?
It requires the same basic modality
sklivvz1971··on Why Tap a Wheel of Cheese?
It wouldn't. Not for now

It's not only the sound, it's the sound, the bounce, the response to different strengths, the smell, the color. Humans are multimodal, machines are not, yet.

The moment we have a Michelin star level robot cook, then we can start thinking about automating this kind of stuff. For now, we have better results with humans!

Italians have absolutely zero problems replacing manual processes with technology. Creating each wheel is more science than art, everything is done in highly sterilized environments with exact temperature control, as an example.

sklivvz1971··on Why F#?
As a person who's worked with the author (a great guy!) and with the F# community on a very large F# project: don't bother with F#, professionally speaking.

F# has many theoretical qualities, which make it fun if you like these things, but it also has some fundamental flaws, which is why it's not getting a wide professional adoption.

- the build system was a mess last I checked (slow, peculiar)

- syntax is not c-like or python-like (a big deal for a lot of people)

- you can't hire developers who know it (and certainly the few are not cheap)

- the community is a bit weird/obsessed/evangelizing (a turn off in a professional environment)

- it's clearly a second class citizen in the .net world (when stuff breaks, good luck getting support)

On the other hand

- it has discriminated unions

- units

- etc.

but do you need this stuff (not want: need)? most people don't.

sklivvz1971··on Software engineering job openings hit five-year low?
I don't think this means what they think it means: a _lot_ of job postings get filled before they get counted. Think about it, there have been a lot of layoffs. Many of these people have friends that can refer them to jobs before they are posted.

A better graph would be of the number of people who self-report as being employed as software developer. I doubt that would show the same decline--there have not been many stories of people abandoning the profession because they could not find employment...

sklivvz1971··on VSCode’s SSH agent is bananas
I am very confused by this post:

1. VSCode uses SSH (with its security profile) and the user can't do anything more with VSCode that they can already do with SSH. If the comparison is between a system without SSH and a system with VSCode and SSH--sure--I understand the concern, but it's an issue with enabling SSH and not VSCode.

2. VSCode can change files and persist? Well, it's a local editor, so yeah, it can change files and persist, that's literally its purpose. If that's an issue, disable editing permissions for the user.

sklivvz1971··on Luigi Mangione's account has been renamed on Stack Overflow
Just a hunch that this could be a mistake of an overzealous community mod that thought that the nick Luigi Mangione was a troll... and that Evan Carroll is the best troll on the Stack Exchange network and he pushed the situation as he does and simply had the opposite effect than he thought he would ("Evan Carroll is flamebaiting again? There's no real problem, give him one year suspension" instead of "Oi, did someone make a mistake here here?")

Of course, I can be totally wrong but I've seen these things happen (I've been both a mod and a core dev at Stack closely working with the community team 8 years ago)

sklivvz1971··on Salary expectations questions – How should you answer them? (2020)
> most candidates overestimate their skills

In reality most candidate are just bad at estimating their own skills (in both directions) and of course they know almost nothing about the match between the skills and the position.

sklivvz1971··on Salary expectations questions – How should you answer them? (2020)
Here's the thing:

- the candidate has a range of salary they expect or need

- the company has a range of salaries that they can pay

If these don't overlap there's no point going forward unless the range of the company is higher.

If these do overlap, it's worthwhile proceeding. Then it's a matter of skill. If you apply and ask for the top range in my salary band, and you are truly exceptional, I'll do my best to match it. But the ask needs to be commensurate to the skills you demonstrate in the interviews. The higher the ask, the stricter the criteria to match.

If you get to the end of the process without disclosing the salary, and you pass all interviews, I'll offer you for what I think you are worth. If you have an ask and did not disclose it, you might have just wasted everybody's time.

Believe it or not, negotiating a salary higher than your worth is a terrible idea. It might sound good, but it sets you up for failure.

sklivvz1971··on Can humans say the largest prime number before we find the next one?
The practical use is what we get from learning how to calculate it (fine tuning the algorithms, finding new ones, etc.)
sklivvz1971··on Optimize Database Performance in Ruby on Rails and ActiveRecord
> ActiveRecord exists to make queries easier to write and more readable

It achieves only making queries much harder and much more opaque. It completely fails at that.

sklivvz1971··on Can humans say the largest prime number before we find the next one?
I am glad you like it. I never claimed my personal projects are anything more than that. They have uses for me for sure :-)

But then, you know, I don't involve 100k people in my projects...

sklivvz1971··on Optimize Database Performance in Ruby on Rails and ActiveRecord
I honestly do not understand ActiveRecord and ORMs in general. There is the obvious advantage of mapping, for which one merely needs microORMs. Even by reading this article one realizes that for anything complex, it is much simpler to directly write SQL queries rather than use byzantine techniques whose only raison d'etre is to coerce the ORM into writing those SQL queries. I mean -- why not write SQL directly? :-)

There's the not-so-common case of needing database independence as well, but at that point DB perf becomes a really hard problem to solve generally...

sklivvz1971··on Can humans say the largest prime number before we find the next one?
The direct application of looking for primes is that's an interesting computer science research project (perf, networking, big data) with a clear practical use, besides obviously being a pure research field which is valuable in itself. There are 800+ results in google scholar for the project (https://scholar.google.com/scholar?q=GIMPS&hl=en&as_sdt=0,5&...)

Vocalizing primes? Maybe it could be used in speech synthesis although I'm not sure that the terms allow it or that the participants would be happy with their voice becoming AI...

sklivvz1971··on Can humans say the largest prime number before we find the next one?
Yes: https://math.stackexchange.com/questions/443706/why-it-is-im...
sklivvz1971··on What is the point of an online conference?
Mainly software architecture, inspirational developer stuff like cool personal projects, software team building and practices.
sklivvz1971··on Texture-Less Text Rendering
I'm pretty sure we've done this before... lol!
sklivvz1971··on What is the point of an online conference?
I have been speaking at about 50 conferences over the years and I refuse to do online ones. Why?

- Conferences are usually not paid, except expenses. In fact the "compensation" for a speaker is to be able to travel and attend in person. Maybe for some this is a drawback, for me it's not.

- In person conferences allow you to meet and network with other speakers. Online conferences do not (unless you count "come to our discord" as networking, I don't)

- The value I get from conferences is also interacting with the public and listening to them, outside of the talks.

- I also don't really get any of the promotion value for my company, which obviously I represent.

In short, I understand they are cheaper to organize but the value is simply not there at all, so I will not speak at them, attend them, or sponsor them.

sklivvz1971··on Should elephants have the same rights as people? A Colorado court may decide
When a court is essentially dictating law, you know we are in trouble. When a law tries to do philosophy, it's even worse.

You can't do this stuff unless you have a working definition of personhood. Good luck with that. The moment that animals have rights you run into a huge series of ethical problems. Should dogs have rights? Should rats? Should insects? Should tardigrades? Should plants? Bacteria?

Most of these philosophical questions have no univocal answers and are usually the layperson can't go beyond "this cute animal has rights because I like it and this other animal doesn't because it's ugly", which frankly is appalling.

sklivvz1971··on Pipe Syntax in SQL
I think this new syntax is more imperative (you tell the DB "how" to get you the data). The old syntax is more declarative (you tell the DB "what" you need).

The big advantage is that the SQL engine can optimize the how if you focus on the what -- especially after so much research has been don building query compilers.

If you want to focus on the "how" then perhaps a "bare bones" DB like Redis is more in line with this kind of thinking.

sklivvz1971··on Pipe Syntax in SQL
We can call it "Linq2SQL" and what a disaster it was...
sklivvz1971··on Pipe Syntax in SQL
SQL doesn't have problems. It's arguably one of the oldest and most successful languages of all times.

Some developers have problems, because they don't understand its abstraction. Periodically they try to re-implement feature to "fix" SQL. Every time it's an absolute disaster.

I realize this is how the world works, but it's just a waste of time.

sklivvz1971··on Scrum is a cancer
Not only I'm not blasting you but also I'm right there with you.

I've always said that Scrum doesn't fix problems, but it makes them more evident so you can fix them.

Teams that don't realize this are going to be unhappy about Scrum, but in my opinion they wouldn't be happy without.

Often the problems are one of these:

- Focusing on estimates. In scrum, a team doesn't really need any estimates beyond planning what they will do in the next two weeks. Planning poker, story points, estimations are just a means to that end. If you don't like them, don't use them.

- Focusing on ceremonies without understanding how to use them (or when to drop them!). I haven't done stand ups in years. I use online tools like geek bot. Retrospectives are just as useful as the number of problems you actually solve after they are pointed out. Planning is only useful if it produces teamwork, if the engineers all work in 1-person silos, it becomes a joke.

- Not understanding that Agile > Scrum. If you think you can be more agile without some parts of scrum, drop the parts you don't need. Being able to change the rules of the game in-flight is part of agile (and of scrum).

sklivvz1971··on Ask HN: Could you share your personal blog here?
https://sklivvz.com

I write about coding, electronics, technical leadership and open source.

- https://sklivvz.com/posts/announcing-cthulhu-a-javascript-in...

- https://sklivvz.com/posts/i-dont-love-the-single-responsibil...

- https://sklivvz.com/posts/team-leadership-for-high-performan...

- https://sklivvz.com/posts/i-built-a-hardware-rng-for-christm...

sklivvz1971··on Microtiming in Metallica's “Master of Puppets” (2014)
It's what the "groove" of a riff is made of -- together with the micro changes in palm muting, the way the pick is held and used... these make up the Metallica sound the way it is.

More in general, it's absolutely wrong to think that modern music, especially rock, is adequately represented on a score or tablature, there's so much missing information on timing, volume, color...

sklivvz1971··on Ask HN: Who is hiring? (May 2023)
Post Op AI | https://postop.ai | Full-time | Engineering | Worldwide Remote | Apply here: https://post-op.homerun.co/?lang=en

Post Op is redefining surgical care, giving patients the ultimate recovery experience and providing clinical teams with more significant insights through AI-empowered communication. We aim to improve post-surgery care and reduce the global cost of surgical site infections.

Open positions: Mobile developer with AI skills, backend developer with AI skills

sklivvz1971··on Italian privacy regulator bans ChatGPT
A few facts

- the privacy commissioner is 78

- he doesn't have any tech background, he's a law academician

- the privacy commission office's home page still has a fax number on their front page, as of this morning

- the commissioner boasted in TV that he signed Musk's AI temp ban letter

- the official reason of the ban is that 12-year-old kids could potentially use the AI service, and OpenAI should instead filter them out

- no evidence that ChatGPT is bad for 12 years old is given

- no study on how many kids below 13 use the site, in relation to how many people overall in Italy

- he acted alone, instead as part of a commission, because he claims it was urgent

- no matter what, he is not liable for his actions by Italian law

Connect the dots anyway you like. I chose the following narrative:

At 78 he doesn't give a :poop:, he doesn't like progress because he's a boomer and abused his office to make a political statement because no one can touch him.

sklivvz1971··on Not by AI
> Artificial Intelligence (AI) is trained using human-created content. If humans stop producing new content and rely solely on AI, online content across the world may run the risk of becoming repetitive and stagnant.

This is an absurd thought. AI content is still created by humans using AI, just like photos are created by humans using cameras.

Also who says that AI can't be as creative as humans or better? Why would humans be better at being creative "manually" instead of with machines?

I say AI creativity will be better than simple humans at creating stuff. Humanity will overall benefit from it and the world will be less dull.

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