@nurkiewicz@fosstodon.org

Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Aug 01, 2026

With all the disadvantages of #JavaScript, at least you don’t have to deal with locks and synchronization, right? Right?!? https://developer.mozilla.org/en-US/docs/Web/API/Web_Locks_API

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 30, 2026

I'm pretty sad I didn't join #jcrete this year. On the other hand, the last time I visited this unconference was... checks notes... 2017? https://nurkiewicz.com/2017/01/thoughts-after-jcrete-unconference.html

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 29, 2026

In #vim, gU is an *Uppercase* command. gu is a uowercase command

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 28, 2026

Metallica ended after Kill’em All.
Internet ended after Usenet.

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 28, 2026

This newsletter could've been an RSS feed

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 28, 2026

"Code review of AI-generated source code? Are you also verifying machine code generated by compiler?"

Dude, you are comparing inherently probabilistic service running on someone's cloud to a compiler, the most deterministic piece of software (that doesn't mean bug-free!) on the planet

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 27, 2026

Underrated #vim advantage: when using vim mode in every other editor, you don't have to learn new keybindings all the time. Shortcuts are always the same. Weird and counterintuitive, but consistent

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 27, 2026

Which #AI actually reads your site? Two months of #LLM traffic, measured https://evilmartians.com/chronicles/which-ai-actually-reads-your-site-two-months-of-llm-traffic-measured - apart from the article itself, look how fast this website loads!

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 25, 2026

Advanced Napkin Math: Estimating System Performance from First Principles by Simon Eskildsen https://youtu.be/IxkSlnrRFqc

YouTube

SREcon19 Europe/Middle East/Africa - Advanced Napkin Math: Estimating System...

USENIX

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 24, 2026

A few non-trivial tips how to build #Docker images: https://youtu.be/aZ_y2M2OuEA?is=CbGFdG3g9ubxSxFt

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 24, 2026

Learn your ⌘+D and ⌘+Shift+D in #iTerm and #Ghostty: split screen into two terminals horizontally and vertically respectively.

Also ⌘+[ and ⌘+] navigates between panes

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 24, 2026

Replying to @toomuchcoding@fosstodon.org

@toomuchcoding@fosstodon.org What's the reason behind the fork? Is spring-cloud-contract no longer supported under #Spring portfolio?

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 23, 2026

Wow, a post from my (now deleted) Twitter account, dated December 2021:

> I’ve been using @githubcopilot@bird.makeup with @intellijidea@bird.makeup for a few weeks. Sometimes it’s ridiculously wrong. But more often I’m blown away by how clever the suggestions are. I’m not afraid of my job being taken over by robots. However, it’s a valuable tool that saves me a bit of typing

https://nurkiewicz.com/2022/11/Twitter-archive.html#tweet-1467570298983796742

bird.makeup

bird.makeup - User

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 23, 2026

"For the first time in history, humans are cheaper than software" - this quote is a bit exaggerated, applies to extrapolated data from top 1% companies spending the most on #AI. Yet, interesting article: https://www.a16z.news/p/the-next-ai-goldrush-tokens-loops

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 23, 2026

Who the hell needs a spreadsheet (with AI!) embedded into Zoom desktop app?

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 22, 2026

Arithmetic interpreter: Write yourself a compiler, Part II: https://nurkiewicz.com/2026/07/arithmetic-interpreter-write-yourself-a-compiler.html #go #compiler

Around IT in 256 seconds

Arithmetic interpreter: Write yourself a compiler, Part II

In the previous article, we created the most naive interpreter, which can basically execute number + number expressions. A logical extension is obviously to handle all basic operations: addition, subt

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Jul 22, 2026

Very entertaining explanation of CAN bus: https://www.youtube.com/watch?v=QTTCqGtT6I4

YouTube

CANBUS – Networking so simple, even YOU can understand it!

Dave's Garage

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 24, 2026

#Ghostty tip: You can have three evenly sized columns or rows (not just 1/2, 1/4, etc.) if you add this: `keybind = super+e=equalize_splits` and press Cmd+E after splitting. This will space everything evenly

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 24, 2026

#TIL where the name `grep` came from: https://stackoverflow.com/questions/1218390/what-is-your-most-productive-shortcut-with-vim/1220118#:~:text=bar.%22-,It's%20interesting%20that%20the%20common%20Unix%20command%20grep%20was%20actually%20inspired%20by%20this%20ex%20command%20(and%20is%20named%20after%20the%20way%20in%20which%20it%20was%20documented).%20The%20ex%20command%20:g/re/p%20(grep)%20was%20the%20way%20they%20documented%20how%20to%20%22globally%22%20%22print%22%20lines%20containing%20a%20%22regular%20expression%22%20(re),-.%20When

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 22, 2026

Recording of my talk "Better Call Fallback: Designing Resilient Services" at WAWTech 2025: https://www.youtube.com/watch?v=_qy-7FKfiLo

YouTube

Better Call Fallback: Designing Resilient Services | WAWTech 2025

WAWTech

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 22, 2026

> “Founder’s mindset”. No one will provide a spec, and scope creep is your problem to deal with. If your project doesn’t ship, that’s also your problem
> “High-agency”. There are no resources besides your own
> “White glove”. Do not say “no” to anything the customer suggests, even when they should probably listen to your feedback about whatever it is

Source: https://newsletter.pragmaticengineer.com/p/the-pulse-forward-deployed-engineering-887

newsletter.pragmaticengineer.com

The Pulse: Forward deployed engineering heats up again

Massive demand for the role at Google, OpenAI, and Anthropic. The latest version of the FDE role is starting to look similar to the consultant / solution architect role

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 22, 2026

`git posh` when your code is particularly elegant

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 18, 2026

#TIL #ClaudeCode's `/resume` command can search through all sessions (not only from current directory) after pressing Ctrl+A

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 15, 2026

„The income [from selling .ai domains] accounts for about 20% of Anguilla's total government revenue” https://finance.yahoo.com/news/tiny-caribbean-island-anguilla-turned-125841086.html#:~:text=The%20income%20now%20accounts%20for%20about%2020%25%20of%20Anguilla's%20total%20government%20revenue. To be honest it already was 5% before the boom (!)

As a Pole 🇵🇱 I’m looking forward to a great comeback of #Perl

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 15, 2026

God bless git... #Claude edition:

```
sed -i without '' wiped the file on macOS. Restoring from git first
```

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 15, 2026

#Raycast MacOS Desktop app switching to Node.js backend and web frontend :-( https://www.raycast.com/blog/a-technical-deep-dive-into-the-new-raycast

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 15, 2026

"Hey Claude, rewrite this in Rust, make no mistakes"
Narrator: "Little did he know, Claude did make mistakes"
https://github.com/oven-sh/bun/issues/30719#issuecomment-4458612447 ;-)

GitHub

PathString::slice dangling reference UB - add Miri to CI · Issue #30719 · oven-sh/bun

error: Undefined Behavior: constructing invalid value of type &[u8]: encountered a dangling reference (0x20933[noalloc] has no provenance) --> src/main.rs:97:18 | 97 | unsafe { core::slice::from_ra...

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 14, 2026

TIL you can run `ffmpeg` (compiled to #WebAssembly) directly in the browser (recording, converting, streaming) via https://github.com/ffmpegwasm/ffmpeg.wasm

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 14, 2026

Jail-breaking Unitree Robot Dog by... injecting `curl` commands after random password... https://www.youtube.com/watch?v=lA8WuXDXfcI&t=720s

YouTube

Robot Dogs Are A Security Nightmare

Benn Jordan

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 14, 2026

A 1 million line PR rewriting #Bun from #Zig to #Rust just dropped... https://github.com/oven-sh/bun/pull/30412

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 13, 2026

Fascinating talk with #ffmpeg and #VLC contributors Jean-Baptiste Kempf and Kieran Kunhya:

> "And everything we’ve just said in the past couple of minutes, every sentence is someone’s lifetime’s work. There are books about- … every sentence"

https://lexfridman.com/ffmpeg-transcript#:~:text=And%20everything%20we%E2%80%99ve%20just%20said%20in%20the%20past%20couple%20of%20minutes%2C%20every%20sentence%20is%20someone%E2%80%99s%20lifetime%E2%80%99s%20work%2E%20There%20are%20books%20about%2D%20%E2%80%A6%20every%20sentence

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 13, 2026

Unbelievable. Every Ford Mach E has a front trunk. It's just there. But you have to pay extra $495 for the feature of unlocking it...

Apparently it's a one-time fee, not a subscription. Such wasted opportunity. https://www.motortrend.com/news/ford-mustang-mach-e-frunk-now-costs-extra

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 12, 2026

#neovim is simple! To copy ("yank"?) the entire buffer into clipboard, just hit [Esc] for Normal mode, followed by `ggyG`! ("go to the beginning of the buffer, yank selection, go to the end of buffer".) Of course you must first add this to use your OSes clipboard...:

```
vim.opt.clipboard = "unnamedplus"
```

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 11, 2026

I switched from #vscode to #Zed and I was blown away that the editor can still be responsive in 2020s. Now I moved further to #NeoVIM. It's obviously even more responsive. Downside: it responds very quickly to my random key presses and I have no idea what I'm doing

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · May 04, 2026

Quiz time: Name a democratic country that has no guaranteed:
* Paid maternity leave (it's not Papua New Guinea, Marshall Islands, Micronesia, Nauru, Palau, Tonga, Lesotho, Swaziland)
* PTO (it's not Marshall Islands, Micronesia, Palau, Tonga, and Gambia)
* Notice period
* Retirement benefits
But has:
* Extremely expensive high education and healthcare
* The highest incarceration rate in the world (surpassed only by El Salvador, Cuba, Rwanda, Turkmenistan, American Samoa)
* Uses weird date format

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Apr 30, 2026

"Meta employees used a total of 60.2 trillion AI tokens (!!) in 30 days. If this was charged at Anthropic’s API prices, it would cost $900M" https://blog.pragmaticengineer.com/the-pulse-tokenmaxxing-as-a-weird-new-trend/#:~:text=Information%2C-,Meta,100M%2B

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Apr 27, 2026

#Claude Code (Opus 4.7, 1M context) is capable of reverse-engineering binaries. I just tried it on a moderately big #Go binary with debug info removed (`-ldflags="-s -w" -trimpath`) and it explained quite well what the program does. It used `nm`, `otool`, `strings` etc. It couldn't decompile it though

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Apr 26, 2026

Biblically accurate picture of a developer managing multiple agents

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Apr 25, 2026

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Apr 15, 2026

#OpenTelemetry glossary: 30 terms you should know: https://nurkiewicz.com/2026/04/open-telemetry-glossary.html

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Apr 14, 2026

I didn't know this terrible practice has a name:

"Back button hijacking breaks this fundamental expectation. It occurs when a site interferes with a user's browser navigation and prevents them from using their back button to immediately get back to the page they came from. Instead, users might be sent to pages they never visited before, be presented with unsolicited recommendations or ads, or are otherwise just prevented from normally browsing the web" https://developers.google.com/search/blog/2026/04/back-button-hijacking#:~:text=page%2E-,Back,web

Google for Developers

Introducing a new spam policy for "back button hijacking" | Google Search Central Blog | Google

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Apr 09, 2026

For $0.14 you can run:

* EC2 t4g.nano (ARM/Graviton2, 2 vCPU, 0.5 GiB RAM) for 34 hours
* EC2 g4dn.xlarge (1 NVIDIA T4 GPU, 4 vCPU, 16 GiB RAM) for 16 minutes
* ...print current date with Opus 4.6:

```
❯ /cost
⎿ Total cost: $0.0000
❯ Current date
Today is April 9, 2026.
❯ /cost
⎿ Total cost: $0.1438
```

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Apr 07, 2026

Honest Roadmap from https://github.com/GitFrog1111/badclaude?tab=readme-ov-file#roadmap

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Mar 05, 2026

Replying to @Edent__dup_2944@mastodon.social

RE: https://fosstodon.org/@nurkiewicz/114822212404911438 @Edent@mastodon.social 1637. 1637 trusted partners

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Mar 05, 2026

Thanks to LLMs, developers can finally avoid things they hate, like writing code, and focus on things they love - reviewing it

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Feb 28, 2026

"Braking is now a premium feature", the conference named SHITx, this Norwegian infomercial is so good: https://youtu.be/T4Upf_B9RLQ

YouTube

A Day in the Life of an Ensh*ttificator

Forbrukerrådet - Norwegian Consumer Council

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Feb 13, 2026

In `docker compose down -v`, `-v` stands for vendetta. I mean, it's not "verbose" mode, it's "delete volumes as well" (!)

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Tomasz Nurkiewicz @nurkiewicz@fosstodon.org · Nov 21, 2025

Replying to @timbray@cosocial.ca

@timbray@cosocial.ca Technically, GET with a body was never forbidden, just had "no defined semantics" and could "cause some existing implementations to reject the request" https://datatracker.ietf.org/doc/html/rfc7231#section-4.3.1:~:text=A%20payload%20within%20a%20GET%20request%20message%20has%20no%20defined%20semantics 🤷

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Tomasz Nurkiewicz

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SREcon19 Europe/Middle East/Africa - Advanced Napkin Math: Estimating System...

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bird.makeup - User

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Arithmetic interpreter: Write yourself a compiler, Part II

CANBUS – Networking so simple, even YOU can understand it!

Fosstodon

Better Call Fallback: Designing Resilient Services | WAWTech 2025

The Pulse: Forward deployed engineering heats up again

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PathString::slice dangling reference UB - add Miri to CI · Issue #30719 · oven-sh/bun

Robot Dogs Are A Security Nightmare

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Introducing a new spam policy for "back button hijacking" | Google Search Central Blog | Google

A Day in the Life of an Ensh*ttificator

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