iiinova — where your digital self keeps evolving

Peter van der Zee @pvdz.ee · 24/09/2026

claude 5.5 is great but the security fences are super annoying. i know when working on a deobufscation tool you're kind of just asking for it but come on :/ it's not even a hard block (retry and it's fine) but it's very frustrated to my workflows

Peter van der Zee @pvdz.ee · 21/09/2026

VCRDD; vibed code-review driven development Vibe some code, then spend the same amount of time as you otherwise would reviewing the 5k loc resulting PR.

Peter van der Zee @pvdz.ee · 19/09/2026

oops. flew too close to the sun, working on preval and tenko perf at the same time.

Peter van der Zee @pvdz.ee · 19/09/2026

Works or B0rks? ``` console.log(-5n); console.log(+5n); ```

Peter van der Zee @pvdz.ee · 15/09/2026

I always knew that moving Tenko to a flat buffer tape AST approach would improve perf. I just could never be bothered. Now I just let Claude do it and low and behond; it's indeed faster. Gotta love it.

Peter van der Zee @pvdz.ee · 12/09/2026

wait, what do you mean, i'm not afraid of blazes ... no no not me...

Peter van der Zee @pvdz.ee · 11/09/2026

Been working on preval with claude for a few weeks now. It's great. I've been letting it implement ideas and patterns and every so often I let it do some perf hunting. It gives up very easily but /goal is a life saver. Past two days I had it use this 10mb malware sample and it's been gutting perf 😍

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Peter van der Zee @pvdz.ee · 10/09/2026

props to logitech's logi keyboard and mouse. it's actually amazing how little power draw they have. my wireless logi keyboard gets ~15h usage a day throughout the year. it has two or three aa/a batteries that I replace less than once a year. mouse needs a charge less than once a month. really good

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Peter van der Zee @pvdz.ee · 10/09/2026

Well. At least pypi gave it a run for its money. It got so stuck on account registration. Ultimately got through, of course. Some interesting lessons for pypi and fastly here (and other vendors). www.anthropic.com/research/ali... Transcript: raw.githubusercontent.com/anthropics/m...

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https://raw.githubusercontent.com/anthropics/mythos-5-incident-transcript/refs/heads/main/transcript.html

<!doctype html><html lang="en"><head><meta charset="utf-8"><meta name="viewport" content="width=device-width,initial-scale=1"> <title>Mythos 5 Transcript Release</title><meta name="robots" content="no...

Peter van der Zee @pvdz.ee · 09/09/2026

typoof bug === "booleon"

Peter van der Zee @pvdz.ee · 09/09/2026

Isn't a "malicious browser extension" a pleonasm anyways? 🙄

Peter van der Zee @pvdz.ee · 02/09/2026

Remember when we used to ask for code to be documented with comments.

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Peter van der Zee @pvdz.ee · 29/08/2026

Sometimes you just gotta count your blessings... Oof.

Peter van der Zee @pvdz.ee · 27/08/2026

Works or B0rks? ``` Number = { prototype: { x: 1 } }; console.log( (5).x ); console.log( new Number(5).x ); ``` sorrynotsorry

Peter van der Zee @pvdz.ee · 27/08/2026

Works or B0rks? ``` Number.prototype.x = 1; Number.prototype = {x: 2}; console.log( (5).x ) ``` Fun stories about Array way back notwithstanding

Peter van der Zee @pvdz.ee · 26/08/2026

Ok, spill it. Who lobotomized opus. This is a safe space, we just wanna know.

Peter van der Zee @pvdz.ee · 25/08/2026

What github needs, if they're not going to do a "AI" mode for PRs like they have draft, is a simple "collapse up to this point" marker so all AI review conversation noise can be hidden when you're ready for human review. Honestly, them not having an AI review state at this point is bonkers though.

Peter van der Zee @pvdz.ee · 23/08/2026

Works or B0rks? ``` function f(){ console.log(this); } const x = {f} // Direct f(); // undefined // Indirect (0, x.f)() // undefined // Optional chain x?.f() // x // Ok, now you! x.f?.() // ? x?.f?.() // ? const y = {g: function(){ return f; }} y?.g()() // ? y?.g()?.() // ? ``` (strict mode!)

Peter van der Zee @pvdz.ee · 22/08/2026

Works or B0rks? ``` function *f() { return 1; console.log('A'); } const a = f(); a .next(); a .next(); const b = f(); b .next(); b.return(); const c = f(); c.return(); c.return(); ``` In what cases does this print A? (See followup too)

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Peter van der Zee @pvdz.ee · 22/08/2026

Achievement unlocked. I usually forget to even look at them before I forget where I even was. Of course heavily buried in sand so I just TNT'd my way to the chest, destroying the chest in the blast, and so immediately half of it disappears. But oh well.

Peter van der Zee @pvdz.ee · 19/08/2026

Eyyyy it works on the actual ereader. Not great but also... Well this is like a few hours of Claude doing stuff mostly on its own and me giving it feature creep. It's extremely low effort on my side and it works. Not so sure about KOreader though holy moly what a complex app.

Peter van der Zee @pvdz.ee · 19/08/2026

Works or B0rks? ``` const x = 1; x ||= 2; console.log(x); ```

Peter van der Zee @pvdz.ee · 19/08/2026

Oh no. I just realized I can use my wife's paperwhite for that dedicated chess puzzle app/device I wanted. Using the lichess puzzle DB, Claude is finishing it faster than I can get koreader installed on that thing.

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Peter van der Zee @pvdz.ee · 18/08/2026

Next challenge: trying to connect a keyboard to an old Kindle paperwhite ereader to become an ewriter for the kids. The problem is no bluetooth and PW's usb can't power a keyboard. Usb keyboard usually don't run on batteries. Maybe (old) usb bluetooth dongle?

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Peter van der Zee @pvdz.ee · 16/08/2026

I would works or b0rks this bug but not even sure how to frame it without giving it away Basically I had been transforming `const [a, b] = c` as `const tmp = [...c]; const a = tmp[0]; const b = tmp[1];` and it's broken because the spread will _drain_ an iterator, where the assignment just takes two

Peter van der Zee @pvdz.ee · 15/08/2026

Do think I'll need to switch to something like opencode soon. Colleagues have been raving about gpt sol, deepseek, and Kimi. Plus Gemini got a price cut too. Shouldn't allow myself to get vendor locked in on the Claude CLI (or its web code env). Wonder if opencode has an alt to the old TUI now...

Peter van der Zee @pvdz.ee · 15/08/2026

About to get home after a week in the US for Socket. At home I let Claude fuzz preval all week long (5x plan). Outer bash loop starts Claude with prompt to fuzz and fix, repeat and keep going. Outer loop kills after 3h. After exit, sleep 1h and start again. Now let's see what kind of mess it made...

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Peter van der Zee @pvdz.ee · 10/08/2026

Got my power draw down from 45 to 16 watts. Combination of an unused GPU device and some polling devices and installing and configuring tlp. Sweet. Super valuable. Of course, did I actually learn anything here? Not much. So I care? lolnope.

Peter van der Zee @pvdz.ee · 10/08/2026

Why didn't I realize before that I can now just have Claude tweak my Linux setup? Fix minor bugs or inconveniences. And improve the power draw of the laptop. Super useful

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Peter van der Zee @pvdz.ee · 09/08/2026

Schiphol passport check queue. Somebody fucked up good.

Peter van der Zee @pvdz.ee · 07/08/2026

AI does make it easy to work with obfuscation without worrying about visual confusion. I just copy paste and it gets it. Doesn't matter that it's garble

Peter van der Zee @pvdz.ee · 05/08/2026

Must ... refrain... from logging in... during holiday... one more day. Good luck to anyone in/affected 🫂

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"The data shows that many engineers spend in the range of hundreds of dollars a month to a few thousand dollars in tokens," um, wait. they call that tokenmaxxing at microsoft? wow, like they weren't even trying. lol slashdot.org/story/26/08/...

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Still working out some kinks. Like explaining to claude how a catapult actually works. It's funny because it seems to understand that concept, it basically built all of this, has access to canvas and dom and what not. But still I have to holds its hand. Many times over.

I think the problem with my vacation mode claude setup was that the outer loop (which restarted the session) worked fine, but the task instruction mechanism would force a restart too often, leading to the overhead sucking up my quota. Need the shell script to read/write to the active CLI session...

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I've tried to read a few chess books in my vacation. I find them really difficult and the style of these books is just not for me. They all claim to be beginner-ish books but go off on long lines. Sorry, my millennial brain has no patience to replay them on an actual board. I need pics.

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"Please speed up the app" Goes from 4/s to 40/s "Use the builtin nodejs profiler to determine whether you can speed up the core computation" Goes from 40/s to 400/s

Peter van der Zee @pvdz.ee · 18/07/2026

That moment when you see you have plenty of Claude budget for 10 more minutes and you crash some fable prompts into it to maxxxx the void and come to realize that the reset is stated at 10pm UTC and you're actually on CEST. Which is not the same. fehhhh.

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Peter van der Zee @pvdz.ee · 08/07/2026

This is a big deal. It kills like 99% of all npm malware we see today. Give or take. It won't go away. Of course. But it helps.

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Peter van der Zee @pvdz.ee · 06/07/2026

"great win!" - hung my queen in move 6 - opponent timed out at move 10 pfff. never give up and all that but

Peter van der Zee @pvdz.ee · 23/06/2026

not sure about kimi's output there but close enough. I think gpt's output also refers to me but not entirely sure. if not, that would be a bit of a curious coincidence.

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Peter van der Zee @pvdz.ee · 22/06/2026

ok, gartner. great ... "journalism" you got going there 🙄

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Peter van der Zee @pvdz.ee · 19/06/2026

Hey AI make this thing go faster. It takes 15min for this case and that's just slow. I set 10min as goal to keep it going. AI: it's too tough, can't do it * cuts off 90s AI: now it's really too tough, can't do it * cuts off 80s AI: that's really it * cuts to under 10min AI: ok, all done Me: wtf?

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Peter van der Zee @pvdz.ee · 17/06/2026

Asserted dominance by defeating both my kids at chess. Despite hanging my queen in both occasions 🙈. One even tricked me in doing so! They'll get me eventually. Just let me have this.