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Simon Klee
413 posts
Simon Klee
@simonklee
Recovering web dev. @opencode at @anomalyco
Copenhagen Katılım Temmuz 2009
302 Takip Edilen856 Takipçiler
@jlongster What’s the difference between property-based testing and simulation testing?
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this is 100% true
last week I wrote a property-based testing thing for OpenCode, requiring replacing the filesystem/network/a few other things with a simulated version
it's still early, but I'm very bullish on it
x.com/unclebobmartin…
Uncle Bob Martin@unclebobmartin
My brain is reeling with the implications. I keep having these revelations and I'm beginning to wonder when they will stop. It turns out that property testing is yet another hardening technique that the agents can profitably engage. Agents can determine whether a function is appropriate for property testing, and can specify the range and domain of those tests. They can implement them quickly, run them, and fix any detected issues. I just found two production bugs this way. Property testing is going to be part of my normal practice, along with Crap analysis, Function mutation, acceptance test mutation, Dry analysis, etc.
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@pavelsvitek_ Ignore sticker price when getting an ebike. Parts and maintenance can easily cost 1000eur in just a few years
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Gave myself a gift.
- 14 days of research
- only 17.5 kg
- 100km range
- sleek design
- integrated battery
- great tires for comfy ride
- for cities and gravel roads
Only 999 EUR. That's a steal.
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Simon Klee retweetledi
more and more work is moving into coding agents, I don't live in my editor anymore
but you gotta keep an eye on these little goblins, they write bad code.
so we built a diff viewer in opencode! available now
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this isn't running 6 agents at a time
it's one agent controlling each instance which is running in an simulated environment and stress testing it with reproducible actions and trying to find bugs
x.com/jlongster/stat…
James Long@jlongster
You get used to it. I don't even see the code. All I see is blonde... brunette... redhead...
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a couple of weeks ago @thomaspaulmann and I got to visit @MKBHD's studio
wild experience to be there in person after seeing it on youtube for so long
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Grok Build is a fully interactive CLI, which means you can actually use your mouse to click. No flickers.
Especially useful as I find myself running 5+ agents at a time and jumping between plans.
xAI@xai
An early beta of Grok Build, an agentic CLI for coding, building apps, and automating workflows is now available for SuperGrok Heavy subscribers. Through this early beta, we will improve the model and product based on your feedback. Try it at x.ai/cli
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Simon Klee retweetledi
point → annotate → ship
any opentui renderable, to any agent. clipboard or mcp.
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@simonklee @jarredsumner you're completely ideologically driven. you've decided LLM tech is bad and now you're trapped in your cope.
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Say what you want, but for people building products on Bun, this is bad news for the foreseeable future.
github.com/oven-sh/bun/pu…
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@mikehostetler Nothing radical
Simon Klee@simonklee
For you this is probably the right decision. You know best. Your product. From my point of view it means less stability because this version of Bun has not been used on millions of computers with endless of configurations (yet). For the foreseeable future this will stay true independent if ClaudeCode ships using it. Bad news because less bug fixes to the version of Bun that has been tested and used by millions of users.
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@jarredsumner @simonklee I just downloaded the canary version and ran my test suite (a backend) and everything was 7 seconds faster on average.
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@letitburnt Works on my machine™
x.com/simonklee/stat…
Simon Klee@simonklee
For you this is probably the right decision. You know best. Your product. From my point of view it means less stability because this version of Bun has not been used on millions of computers with endless of configurations (yet). For the foreseeable future this will stay true independent if ClaudeCode ships using it. Bad news because less bug fixes to the version of Bun that has been tested and used by millions of users.
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@frtrillo7 Yes, agree. And if you're building on Bun that bet may align or not align with your goals.
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@simonklee Could be a total failure or a total success so not necessarily. This can be an Anthropic bet and it will show totally the new coding landscape with LLMs
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@simonklee Any exact reason why?
Unless it is less stable than before (which was a low bar), it shouldn't be an issue right?
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@jarredsumner @simonklee Hater’s will hate, you continue the good work
I have been using bun for 2 years now. No complaints so far, except minor hiccups that was fixed quickly.
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For you this is probably the right decision. You know best. Your product.
From my point of view it means less stability because this version of Bun has not been used on millions of computers with endless of configurations (yet). For the foreseeable future this will stay true independent if ClaudeCode ships using it.
Bad news because less bug fixes to the version of Bun that has been tested and used by millions of users.
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@simonklee > this is bad news
Most of the feedback from OpenCode users to Bun has been crash reports. Many of these crash reports would not have happened with a borrow checker and lifetimes and automatic cleanup Rust provides.
Please file issues if you run into any and we will fix.
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@realNirajK That's our master plan … to make people think we work for Anthropic.
The truth is much more boring than that. It's an old company with an old logo (pre anthropic) and we havent updated it because it's not our main focus.
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