Author | Lightnews

🇺🇦 Ingvar Stepanyan

@rreverser.com

2.8K followers 880 following 3K posts

Sr. Principal Engineer at Cloudflare by day, WebAssembly consultant by night. You might also know me from my work on OSS tools and libraries (JS / Wasm / Rust) or Wasm DevRel at Google Chrome 📝 https://rreverser.com/ 📷 https://instagram.com/rreverser

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🇺🇦 Ingvar Stepanyan @rreverser.com · Jan 9

> walking through marrakech at night
> some guy comes up and asks if I want hash
> I ask if it's a cryptographic hash
> he doesn't understand
> I show him the NIST definition
> he laughs and says "it's a good hash"
[...]
> it's not a cryptographic hash

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🇺🇦 Ingvar Stepanyan @rreverser.com · 12h

Does it run on AWS Graviton?

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🇺🇦 Ingvar Stepanyan @rreverser.com · 14h

Ohh how much does that add on cost per month?

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🇺🇦 Ingvar Stepanyan @rreverser.com · 16h

That's a forest at this point.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 17h

I'm thinking of it similarly to Wasm imports where only stuff that you expose to the executor is stuff it can use to interact with the outer world. Which is what the linked proposal does as well, just with a bit more boilerplate maybe?

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🇺🇦 Ingvar Stepanyan @rreverser.com · 17h

Like imagine I give it `{ availableAPIs: [React, Intl, myCustomLib] }` and, based on available info in the model + method names in the libs, it guesses which methods to call when you ask it to do something.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 17h

Hmm. Could be neat if it was possible to just give it an arbitrary JS object (like those coming from library import) and let it traverse the method names. Not quite a proper description, but could make the integration with wider JS ecosystem a breeze.

🇺🇦 Ingvar Stepanyan @rreverser.com · 17h

Security specialists don't want you to know this one weird trick.

async function randomGenerator() {
const text = await session.prompt(`secure random number = (result only)`, opts);
return JSON.parse(text);
}
undefined
await randomGenerator()
0
await randomGenerator()
73
await randomGenerator()
28
await randomGenerator()
91
await randomGenerator()
15
await randomGenerator()
42

🇺🇦 Ingvar Stepanyan @rreverser.com · 17h

Named it appropriately.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 18h

Adapted for modern times.

(you wouldn't believe how many tweaks it took me to convince LLM to just add two numbers and return the result)

An old Stack Overflow question “Add a number to another number in JavaScript.” The question asks how to add one number to another in JavaScript. The top answer, with 22 upvotes, incorrectly suggests using jQuery, saying it “does all things.” The word “jQuery” is crossed out in red, and “AI” is written in green instead.

> const session = await LanguageModel.create({

expectedOutputs: [

{ type: "text", languages: ["en"] }

]

});

const opts = {

responseConstraint: {

type: 'number'

}

};

async function addNumbers(x, y) {

const text = await session.prompt(${x} + ${y} = (result only), opts);

return JSON.parse(text);

}

<< undefined

> await addNumbers (10, 20)

< 30

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🇺🇦 Ingvar Stepanyan @rreverser.com · 22h

AWS crash causes $2,000 Smart Beds to overheat and get stuck upright - Dexerto

The AWS outage caused chaos for owners of Eight Sleep’s Pod3 mattresses as they had no offline mode and were stuck at high temperatures.

www.dexerto.com

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🇺🇦 Ingvar Stepanyan @rreverser.com · 23h

YT music only does that without the subscription though, with premium you can disable videos once and forget about them. Have been using it as a basic music player for years now and quite happy.

🇺🇦 Ingvar Stepanyan @rreverser.com · 1d

So glad Google is prioritising images above the fold. So useful.

🇺🇦 Ingvar Stepanyan @rreverser.com · 2d

Yeah that's not the future I dreamed the tech advancements would enable.

TechCrunch @techcrunch.com · 4d

A new iPhone app, Endless Summer, uses AI to create photorealistic vacation photos starring you — no travel required

Too burned out to travel? This new app fakes your summer vacation photos for you | TechCrunch

A new iPhone app, Endless Summer, uses AI to create photorealistic vacation photos starring you — no travel required

techcrunch.com

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🇺🇦 Ingvar Stepanyan @rreverser.com · 2d

Dammit I wasn't supposed to get nerd-sniped.

🇺🇦 Ingvar Stepanyan @rreverser.com · 2d

Forgot to attach benchmark result.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 2d

Something that does work a bit faster is something like this - 35% improvement on a chain of 100 std::iter::once elements, but of course, unlike stdlib, this won't handle double-ended iteration.

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Reposted by 🇺🇦 Ingvar Stepanyan

Alice ✨ @welltypedwit.ch · 2d

answer: it's rust! by a lot. on my machine, haskell took ~8.8μs, ocaml took ~10μs and rust needed a whole *108μs*.

the interesting question is *why* rust is so slow though and it has a really nice, simple answer: with rust's iterators, this code is quadratic.

Alice ✨ @welltypedwit.ch · 3d

pop quiz: you are consing 1000 elements to an iterator. which language's iterator implementation is the *SLOWEST*?

1️⃣ <a href="https://poll.blue/p/HGXg5v/1" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link" target="_blank" rel="noopener" data-link="bsky">Rust (with Iterator::chain)
2️⃣ <a href="https://poll.blue/p/HGXg5v/2" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link" target="_blank" rel="noopener" data-link="bsky">Haskell (lists)
3️⃣ <a href="https://poll.blue/p/HGXg5v/3" class="hover:underline text-blue-600 dark:text-sky-400 no-card-link" target="_blank" rel="noopener" data-link="bsky">OCaml (Seq.t)

📊 Show results

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🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

We all have our daemons.

🇺🇦 Ingvar Stepanyan @rreverser.com · 3d

I hear gluten is a sin.

Reposted by 🇺🇦 Ingvar Stepanyan

Max Kennerly @maxkennerly.bsky.social · 3d

so is America going back to the monarchy because we are predominantly English-speaking

🪖MilitaryNewsUA🇺🇦 @militarynewsua.bsky.social · 4d

🥴🤡Trump envoy Witkoff pressed the Ukrainian delegation on handing over Donetsk region to Russia during a meeting on Friday, - WP.

He used the Kremlin's key argument that the region is predominantly Russian-speaking.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 4d

Sometimes "referenced by" section of a foundational paper is pure gold.

Tomato quality assessment, star maps, battery defects, ... - you'd think all of these topics can't possibly have anything in common, and yet.

Cano-Lara MRostro-Gonzalez H(2024)Tomato quality assessment and enhancement through Fuzzy Logic: A ripe perspective on precision agriculturePostharvest Biology and Technology10.1016/j.postharvbio.2024.112875212Online publication date: Jun-2024
https://doi.org/10.1016/j.postharvbio.2024.112875
Thompson J(2024)Iterative smoothing for change-point regression function estimationJournal of Applied Statistics10.1080/02664763.2024.235275951:163431-3455Online publication date: 21-May-2024
https://doi.org/10.1080/02664763.2024.2352759
Lu HJiang YGao Y(2024)A Denoising Algorithm of Star Map Based on Wavelet Transform and Double-Window Combined FilteringProceedings of 3rd 2023 International Conference on Autonomous Unmanned Systems (3rd ICAUS 2023)10.1007/978-981-97-1083-6_319-29Online publication date: 26-Apr-2024
https://doi.org/10.1007/978-981-97-1083-6_3
shiyu pWang ZShuai YDan H(2024)Weakly-supervised battery defect detection based on enhanced regions of interestFifteenth International Conference on Graphics and Image Processing (ICGIP 2023)10.1117/12.3020139Online publication date: 25-Mar-2024

🇺🇦 Ingvar Stepanyan @rreverser.com · 4d

And yet 😅

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🇺🇦 Ingvar Stepanyan @rreverser.com · 4d

No, only doing astrophotography as a hobby.

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🇺🇦 Ingvar Stepanyan @rreverser.com · 5d

It's just like iterator.next() 🥳

🇺🇦 Ingvar Stepanyan @rreverser.com · 5d

Impostor syndrome really be like: "hey, don't you feel bad that some of this professional astronomer's *raw* images look better than the ones you've spent hours postprocessing?"

Why, yes, now I do.

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