Bernard Kolobara
@kolobara.com
Into 📡 distributed systems and 🦀 rust. Creator of https://flawless.dev and https://lubeno.dev.
Reposted by Bernard Kolobara
You can apply this to so much! I refer to this as “labs thinking.” It’s where you allow yourself the degrees of freedom needed to explore the problem space.
Then once you’ve formed a better world model you can build a more accurate representation within tighter constraints.
Then once you’ve formed a better world model you can build a more accurate representation within tighter constraints.
my best code is written in a two-step process:
1. kludge a working prototype together, don’t worry about the code AT ALL. the point is understanding how the requirements function in reality
2. destroy the prototype completely. build the app for real using my better mental model
1. kludge a working prototype together, don’t worry about the code AT ALL. the point is understanding how the requirements function in reality
2. destroy the prototype completely. build the app for real using my better mental model
November 24, 2025 at 7:47 PM
You can apply this to so much! I refer to this as “labs thinking.” It’s where you allow yourself the degrees of freedom needed to explore the problem space.
Then once you’ve formed a better world model you can build a more accurate representation within tighter constraints.
Then once you’ve formed a better world model you can build a more accurate representation within tighter constraints.
Reposted by Bernard Kolobara
I got some water damage on my document
November 23, 2025 at 5:47 PM
I got some water damage on my document
.expect() is so unintuitive to me. You are supposed to phrase it in a way where you explain why it is not failing, for example .expect("the var exists"). But 80% of the time I write why the call is failing. I like to explain why the call failed, not why I was assuming it's going to work.
#rustlang hot take: We should rename .unwrap() to .or_panic(). (And .expect() to .or_panic_with().) "Unwrap" is a terrible name for the panicking function, especially since we also have things like .unwrap_or() and .unwrap_or_default() which never panic.
November 19, 2025 at 9:13 PM
.expect() is so unintuitive to me. You are supposed to phrase it in a way where you explain why it is not failing, for example .expect("the var exists"). But 80% of the time I write why the call is failing. I like to explain why the call failed, not why I was assuming it's going to work.
Steam Machine having over 2k upvotes on Hacker News tells you everything where the consumer is at today and what the people actually want.
> Install your own apps, or even another operating system. Who are we to tell you how to use your computer?
No market research necessary at all.
> Install your own apps, or even another operating system. Who are we to tell you how to use your computer?
No market research necessary at all.
November 13, 2025 at 9:58 AM
Steam Machine having over 2k upvotes on Hacker News tells you everything where the consumer is at today and what the people actually want.
> Install your own apps, or even another operating system. Who are we to tell you how to use your computer?
No market research necessary at all.
> Install your own apps, or even another operating system. Who are we to tell you how to use your computer?
No market research necessary at all.
Reposted by Bernard Kolobara
multi line headers for those curious if alignment works
November 11, 2025 at 12:27 AM
multi line headers for those curious if alignment works
Reposted by Bernard Kolobara
October 10, 2025 at 3:17 PM
Reposted by Bernard Kolobara
✍️ New post: European Tech Alternatives 🇪🇺
#blogtober #tech #software #europe
matthiasott.com/notes/europe...
#blogtober #tech #software #europe
matthiasott.com/notes/europe...
European Tech Alternatives 🇪🇺 · Matthias Ott
Matthias Ott is an independent user experience designer and web design engineer from Stuttgart, Germany. He also teaches Interface Prototyping at the Muthesius Academy of Fine Arts and Design.
matthiasott.com
October 5, 2025 at 12:27 AM
✍️ New post: European Tech Alternatives 🇪🇺
#blogtober #tech #software #europe
matthiasott.com/notes/europe...
#blogtober #tech #software #europe
matthiasott.com/notes/europe...
Telling a story with commits is much easier if you are using #jj-vcs instead of git. meks.quest/blogs/the-th...
meks.quest
meks.quest
September 26, 2025 at 9:31 AM
Telling a story with commits is much easier if you are using #jj-vcs instead of git. meks.quest/blogs/the-th...
YES! For 3 years, while working on lunatic (github.com/lunatic-solu...), every day I wished reflections in Rust existed. Annotating every type that can be sent between processes was such a pain!
👋 FEEDBACK WANTED
..on this preliminary #rustlang reflection MVP design by oli: github.com/rust-lang/ru...
(the PR works, you can compile it and play with it, see rustc-dev-guide.rust-lang.org)
..on this preliminary #rustlang reflection MVP design by oli: github.com/rust-lang/ru...
(the PR works, you can compile it and play with it, see rustc-dev-guide.rust-lang.org)
Reflection MVP by oli-obk · Pull Request #146923 · rust-lang/rust
I am opening this PR for discussion about the general design we should start out with, as there are various options (that are not too hard to transition between each other, so we should totally jus...
github.com
September 23, 2025 at 9:43 AM
YES! For 3 years, while working on lunatic (github.com/lunatic-solu...), every day I wished reflections in Rust existed. Annotating every type that can be sent between processes was such a pain!
I can't believe we never got a sequel to this masterpiece!
September 16, 2025 at 8:13 AM
I can't believe we never got a sequel to this masterpiece!
Reposted by Bernard Kolobara
It's been a pretty wild 12 months. I gave 4 different talks at 4 different conferences on 4 different continents. Thanks for having me, Rust community. I'm glad to be part of you.
September 6, 2025 at 6:32 PM
It's been a pretty wild 12 months. I gave 4 different talks at 4 different conferences on 4 different continents. Thanks for having me, Rust community. I'm glad to be part of you.
Spending a few days on Skopelos. Mamma Mia! vibes.
September 4, 2025 at 7:03 AM
Spending a few days on Skopelos. Mamma Mia! vibes.
Ok, this was way more controversial than I expected 😅
Over the last months I have been thinking about the productivity impact of using Rust. I have put some of my thoughts into a blog post.
lubeno.dev/blog/rusts-p...
lubeno.dev/blog/rusts-p...
The unexpected productivity boost of Rust
Rust is known for having a steep learning curve, but in this post we will be looking at another curve, the one showing developer productivity in relation to the project size.
lubeno.dev
August 27, 2025 at 8:25 PM
Ok, this was way more controversial than I expected 😅
Over the last months I have been thinking about the productivity impact of using Rust. I have put some of my thoughts into a blog post.
lubeno.dev/blog/rusts-p...
lubeno.dev/blog/rusts-p...
The unexpected productivity boost of Rust
Rust is known for having a steep learning curve, but in this post we will be looking at another curve, the one showing developer productivity in relation to the project size.
lubeno.dev
August 27, 2025 at 1:11 PM
Over the last months I have been thinking about the productivity impact of using Rust. I have put some of my thoughts into a blog post.
lubeno.dev/blog/rusts-p...
lubeno.dev/blog/rusts-p...
Reposted by Bernard Kolobara
Good thing then that I'm giving a talk in 4 days at Rust Forge on (among other things) making inference breakage no longer actually break things 😁
August 25, 2025 at 8:52 PM
Good thing then that I'm giving a talk in 4 days at Rust Forge on (among other things) making inference breakage no longer actually break things 😁
We have just pushed a big update to lubeno.dev
If you are looking for a place to host your code with servers in the eu 🇪🇺, check us out!
If you are looking for a place to host your code with servers in the eu 🇪🇺, check us out!
August 18, 2025 at 2:36 PM
We have just pushed a big update to lubeno.dev
If you are looking for a place to host your code with servers in the eu 🇪🇺, check us out!
If you are looking for a place to host your code with servers in the eu 🇪🇺, check us out!
"This tool is, today, the worst it will ever be."
I wish there was a law that guaranteed that things only get better with time.
I wish there was a law that guaranteed that things only get better with time.
August 18, 2025 at 6:22 AM
"This tool is, today, the worst it will ever be."
I wish there was a law that guaranteed that things only get better with time.
I wish there was a law that guaranteed that things only get better with time.
Reposted by Bernard Kolobara
That feeling when you finally figure out the right Rust hack for a usecase that needs HKT...
a man in a wet suit is holding a carabiner and a watch that says prime video on it
ALT: a man in a wet suit is holding a carabiner and a watch that says prime video on it
media.tenor.com
August 12, 2025 at 10:26 AM
That feeling when you finally figure out the right Rust hack for a usecase that needs HKT...
Reposted by Bernard Kolobara
#GitHub doesn't have good competition for individuals / small teams. Can't commit to Codeberg due to stance on private repos & commercial projects. GitLab seems as bloated and more expensive. Forgejo seems easy to self-host, but I'd rather not at this point. One of these days.
August 12, 2025 at 5:47 AM
#GitHub doesn't have good competition for individuals / small teams. Can't commit to Codeberg due to stance on private repos & commercial projects. GitLab seems as bloated and more expensive. Forgejo seems easy to self-host, but I'd rather not at this point. One of these days.
I have spent the day researching how React's <Suspense>, `useDeferredValue(<value>)` and `use(<promise>)` abstractions work together, and it finally clicked!
You just need to think of it in terms of TWO exception system! Yes, TWO exception system built on UI tree structures. 🧵
You just need to think of it in terms of TWO exception system! Yes, TWO exception system built on UI tree structures. 🧵
August 11, 2025 at 9:32 PM
I have spent the day researching how React's <Suspense>, `useDeferredValue(<value>)` and `use(<promise>)` abstractions work together, and it finally clicked!
You just need to think of it in terms of TWO exception system! Yes, TWO exception system built on UI tree structures. 🧵
You just need to think of it in terms of TWO exception system! Yes, TWO exception system built on UI tree structures. 🧵
Reposted by Bernard Kolobara
Aug 10th 1988 - Zero Cool was in the New York Times for crashing 1,507 computer systems.
📽️📅 Hackers (1995)
📽️📅 Hackers (1995)
August 10, 2025 at 10:26 AM
Aug 10th 1988 - Zero Cool was in the New York Times for crashing 1,507 computer systems.
📽️📅 Hackers (1995)
📽️📅 Hackers (1995)
Reposted by Bernard Kolobara
I’m most concerned that it’s stuck. I think the Rust project has a real problem with things being designed, partially implemented, used in the compiler, and then never finished and stabilized for regular users outside of Nightly.
IMO the desire for maximally generic APIs is part of that pattern.
IMO the desire for maximally generic APIs is part of that pattern.
August 10, 2025 at 3:58 PM
I’m most concerned that it’s stuck. I think the Rust project has a real problem with things being designed, partially implemented, used in the compiler, and then never finished and stabilized for regular users outside of Nightly.
IMO the desire for maximally generic APIs is part of that pattern.
IMO the desire for maximally generic APIs is part of that pattern.
Intel stock the second he tweeted.
August 7, 2025 at 11:56 AM
Intel stock the second he tweeted.
Reposted by Bernard Kolobara
One thing that doing creative work teaches you is that ideas are worth nothing. Anybody can have an idea. In a writers room you have to come up with a hundred ideas a day, and most of those don’t make the page. It’s the work of making something that gives it value. The patina of humanity.
"AI only offers suggestions based on your prompts. It's still your imagination."
No. Your imagination provides the germ of a story, expands it into sentences, phrases, paragraphs, chapters, culminating in a complete story. Using AI is "I have an idea," then someone else writes a story based on it.
No. Your imagination provides the germ of a story, expands it into sentences, phrases, paragraphs, chapters, culminating in a complete story. Using AI is "I have an idea," then someone else writes a story based on it.
August 4, 2025 at 11:07 PM
One thing that doing creative work teaches you is that ideas are worth nothing. Anybody can have an idea. In a writers room you have to come up with a hundred ideas a day, and most of those don’t make the page. It’s the work of making something that gives it value. The patina of humanity.