Conrad Irwin

The spicier take is; it feels like all the AI tools I see are catered towards quick-wins and easy fixes. Super dumbed down UIs.

I'm really looking forward to tooling designed for the huge wave of expert software engineers that will be here after a few years of practice.

It's really exciting to me how much easier it is for people to get started programming with LLMs. Being able to fully control a computer is super empowering.

Sometimes it's easier just to work around the limitations of your tools. Last Q in this survey...

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Wouldn't be a day of the week that ends in "day" without GitHub having problems.

Kotlin's Rich Errors: Native, Typed Errors Without Exceptions At KotlinConf 2025, the Kotlin team showcased progress toward Rich Errors with union types. After years of watching languages slowly adopt patterns that Elm has championed since day one, it’s exciting...

Kotlin read my blog post! cekrem.github.io/posts/kotlin... vs cirw.in/blog/typescr... :D

Why there’s no European Google? Why there’s no European Google? par Ploum - Lionel Dricot.

ploum.net/2026-01-22-w...

Close politely (almost always).

If it's something we wanted, and the author makes it clear that (a) they understand what the code is and (b) they chose to create it that way, (and (c) I agree with their judgement), then I'll engage.

Or does it 👀...

My guess is they're trying to pull the nostalgia strings of people my age who now have kids

The best user experiences often involve the worst internal abstractions. Hard-won lesson

What idiot called it vibe coding and not prayer programming

I think I have to approach LLMs in the same way I approach guns:
- expands agency
- Changes social dynamics
- Complicated to talk about

How do cats structure multi-threaded programs?

With a mew-tex

Rendering at 1 million pixels / millisecond with GPUI - Conrad Irwin | EuroRust 2025 YouTube video by EuroRust

@cirw.in I just watched your talk "Rendering at 1 million pixels / millisecond with GPUI". It is really great! One of the best this year! #eurorust www.youtube.com/watch?v=sheI...

How did I miss that someone figured out fully linear time lookaround matching for regexes!

aurele-barriere.github.io/papers/linea...

A friend shared a lovely Dijkstra essay. It's short enough to read in a few minutes, and is damning of the current attempt to replace our brains with AI generated writing and vibe coding.
www.cs.utexas.edu/~EWD/transcr...

hate it when programs present you with a text input and it's NOT READY FOR YOU TO TYPE IN — like wdym?? I'm a meatbag full of water! You're a monster running at 4.5 GHz!!! How am I waiting on you!

i think rust teaches us to fear dynamic dispatch because it looks ugly to box dyn, but my hottest bevy take is that we haven’t yet begun to fully explore the potential of function pointers in components

git: Branch diff by ConradIrwin · Pull Request #40188 · zed-industries/zed Note: It would be really nice if we could also show this information in the git panel, but the branch was getting long lived so I wanted to merge as is. Release Notes: git: Adds the ability to vie...

I've been running stable since I left @zed.dev but this one got me downloading preview to get early 🤩 nice @cirw.in

github.com/zed-industri...

Was at my in-laws yesterday and they pulled out an (unopened) box of cookies that expired in 2016...

zed/.github/workflows at main · zed-industries/zed Code at the speed of thought – Zed is a high-performance, multiplayer code editor from the creators of Atom and Tree-sitter. - zed-industries/zed

Anyone with a complicated set of GitHub Actions YAML files have ideas on a good structure to avoid insanity?

Seems like "put all the scripts into .sh" files is a good start; but the whole lot is quite tangled

Asking for a friend... github.com/zed-industri...

I collaborated with @cirw.in at EuroRust to make a Zed extension for Roto! It's based on the tree-sitter grammar and supports syntax highlighting and generating an outline. It can be installed via Zed's regular extension manager.

Thanks @cirw.in!
cc @nlnetlabs.bsky.social

#rust #rustlang

And the first day of #eurorust25 wraps up with some amazing story time with Conrad Irwin (@cirw.in) talking about software, speed and how it all affects human experience! 🔃🤌🏼👏🏼

My voice-to-text model just transcribed "stack of abstractions" to "stack of obstructions".

I guess it's the same. 😭

I want this t-shirt!

If the software engineering thing really does go up in AI smoke, you can start a business in retro swag.

What if typescript was right about union types...?
cirw.in/blog/typescr...

I suppose; but I find the lack of consistency frustrating - mostly when I realize I’ve built up a fancy iterative chain and now can’t use it

A better for loop? cirw.in/blog/for-yield