Kai Rollmann

software engineer – HPI alum – paragliding pilot – claude code coordinator – early stage – react, typescript, vim – sparkling eyes – serious work

[Kai Rollmann @kairollmann]

@bcherny quick bug report: when i'm in ghostty, in a tmux session, and i have multiple panes running claude, and i expand one pane, then any prev text output remains truncated to the width the non-expanded pane had before. zooming causes re-render and fixes it, but is cumbersome.

[Kai Rollmann @kairollmann]

@bcherny Wish there was a better tutorial! Feels powerful, but odd: crontab -l doesn't show loops, unclear how claude keeps the crontab / server-side? It checks every 1 sec if my /loop every day at 10pm should run? What if I have no / multiple sessions running / or only in other folder?

[Kai Rollmann @kairollmann]

So much fun to finish half-done side projects with AI & learn something along the way.

Check out my little git branch switcher CLI, re-written in Go, published to brew + arch https://t.co/owoHiqsVTi

Ignore ofc that switching branches by hand is somewhat of an ancient workflow

[Kai Rollmann @kairollmann]

@TweetsOfSumit To fix all the tiny design system inconsistencies ✌️🤓

[Kai Rollmann @kairollmann]

@TweetsOfSumit I can confirm :)

[Kai Rollmann @kairollmann]

Hey @bcherny , since a couple days, here and there Claude Code seems to say "the user" instead of "you", as in: "the user's suggestion is ...", instead of "your suggestion is ...". Feels odd, is it a bug?

[Kai Rollmann @kairollmann]

@karpathy Agreed to a lot here. One more thing I can't fully grasp: the work mode with agents feels more like "iterative render passes" at a location + surface area, with frustratingly limited depth, when actual programming feels like uncovering perfect pixels, but on a narrow surface

[Kai Rollmann @kairollmann]

Wouldn't it be amazing to have on-device speech recognition, available via a web API, for browsers with a locally installed speech-to-text model?

Fill all forms via voice!

Speech -> send text + zod rules to external LLM -> get JSON with form values back

Help! @jaffathecake

[Kai Rollmann @kairollmann]

@dhh @dhh are you sure you've listened to what Pistorious said? Have you lived in Germany before? I was looking up to you, makes me quite sad to see you so easily persuaded by that Vance speech.

[Kai Rollmann @kairollmann]

@cursor_ai Dear team, I'd love to have a voice-enabled composer mobile app that connects with the repository I've got open on the laptop and allows me to go for a walk, speak the composer commands and review & accept the diffs by swiping left / right. Thank you the amazing work!

[Kai Rollmann @kairollmann]

As a weekend project I visualized the German federal budget. Fun fact: all ministry of health expenses are covered entirely by the earnings from the tobacco tax alone!

https://t.co/XEHcOWcI2V

[Kai Rollmann @kairollmann]

@dhh Kindof looking forward to an awair element level in-depth review of your findings on what's the gold standard for the crispest font rendering out there

[Kai Rollmann @kairollmann]

Say you have an @Apple #iMessage family chat, 10 years of text, img + videos, total of 40GB. You'll want to upgrade to $2.99/month for 200GB #iCloud soon. Say you're 6 family members, you're together paying 6 * 3 * 12 = $216/year, just for family chat? And NO data export option?

[Kai Rollmann @kairollmann]

@braun_hartmut @LageNation Genau, einfach 3 verschiedene Zoom-Stufen drauf. Finde irgendwie wenn man den Standard-Chart zur höhe des Steuersatzes selbst anschaut, dann versteht man nicht so richtig, dass am Ende genau diese Kurve dabei rauskommt.

[Kai Rollmann @kairollmann]

@LageNation Zur aktuellen Debatte: hier die effektive Einkommensteuer einmal geplottet

[Kai Rollmann @kairollmann]

@ashtom What would you recommend German software engineers to do? Start or join European AI startups? Organise local AI meetups? Switch career focus on ML? I’m curious over here :)

[Kai Rollmann @kairollmann]

@dhh Using TS full stack allows us to be end to end type safe. Someone alters a DB column in a migration and you'll catch a resulting frontend issue at compile time. I'm curious: in the RoR ecosystem and now without TS, what's your approach to getting similar benefits?

[Kai Rollmann @kairollmann]

@YuriSulyma You're right, that's so interesting.
Yet even for formulas that express relationships, couldn't we generate code that illustrates a minimal example use as in: "this is how it plays out when applied"?
Maybe to *augment* the formula reading experience instead of *replacing* it?

[Kai Rollmann @kairollmann]

Could a browser extension be built that replaces formulas in math notation on Wikipedia with code?

To make the logic easier to read?

[Kai Rollmann @kairollmann]

@naval couldn't you say: *all* jobs make you do the same thing over and over – only careers don't?