iOS all the things
Moscow, Russia
Joined December 2007
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Установил bb (getbb.app) и как же хорошо стало управлять двумя агентами, работающими над планом разработки. Не нужно перекладывать результат разработки этапа ревьюеру руками и не возвращать результаты обратно. «Больше не двигаю юнитов руками, как в Старкрафте» :)
Roman Busygin retweeted
Creative work is inherently turn-based. You don't just blink and the whole painting is there. One stroke reacts to the next.
Roman Busygin retweeted
Continuation of my old video-as-3d-object demo
Always wanted to extend it further with segmentation so you can search for any type of object within the scene
Roman Busygin retweeted
You cannot optimize what you haven’t mastered manually. You haven’t earned the right to automate until you’ve felt the friction of the manual labor.
Roman Busygin retweeted
Xcode 27.2 beta includes a new CLI: xcodeproj
It lets you change build settings, add targets, edit groups… from the command line. Works with the new JSON project format and classic Xcode projects, and uses the same underlying support as Xcode, so edits match what Xcode does.
If you have the beta installed, check it out:
xcrun xcodeproj --help
Roman Busygin retweeted
If you want to learn more about how SwiftUI animation works, and that in fact most of the time its animations run off the main thread, check out: developer.apple.com/videos/p…
Roman Busygin retweeted
Fun fact: the creator of CoreAnimation is one of the creators of SwiftUI!
The decision to run animations in the app process rather than the render server (as CoreAnimation does) was one of the earliest and most fundamental decisions we made when designing SwiftUI.
Some of the most distinctive experiences of using an iPhone, like UIScrollView rubber banding and SpringBoard app switching are only possible as client-side animations.
But these experiences aren’t easy to build with UIKit!
This is because if you want a UI to be fully interactive and interruptible by the user while it’s animating, it has to be running in the same process as the event handling.
In fact, in iOS 18 we added new APIs to AppKit and UIKit to adopt the SwiftUI client-side animation model.
There are a lot of valid critiques of SwiftUI. The fact that SwiftUI doesn’t use CoreAnimation for its animations is not one of them.
SwiftUI isn’t native and here’s why SwiftUI apps may sometimes feel janky. It ditches the key element that made animations run so smoothly on iOS since the original iPhone: Core Animation.
In SwiftUI animations run in-app without CA backing. Block the main thread: SwiftUI ball stalls while UIKit’s keeps moving on the render server.
Roman Busygin retweeted
After co-inventing ChatGPT, I kept asking myself: why have superhuman chat models not led to AGI?
I’ve spent the last 2 years in stealth building a new way to train models (RLCD), and a new type of frontier AI model that we are releasing today: Jev
• 20-200x faster
• 40-400x cheaper (w/ output tokens free)
• Frontier composable intelligence optimized for decisions
AFAICT the shortest path to AI-based economic revolution
Стоя на станции Тайга в Кузбассе, мне приспичило купить фьючерсов на юань в Финаме. Интернет там был странный, запросы отрабатывали медленно (хотя телефон утверждал, что это было LTE). Первая заявка со вторым плечом — таймаут. Ну ладно. Вторая заявка — то же самое.
Roman Busygin retweeted
cross-platform SwiftUI swiftcrossui.dev is probably BETTER way to ship great app than Electron slop. quite amazed how the project evolved 🥰
Roman Busygin retweeted
Every time I hear people say “Claude wrote it all: I don’t understand how it works”, I decide that they can’t debug it, full stop.
If you can’t debug it, you can’t own it.
And if you can’t own it, anyone who cares about reliability or stability cannot trust you as a vendor.
Roman Busygin retweeted
Some observations from disassembly that might be related to iOS 27 performance boost
codecolor.ist/posts/2026-06-…
Roman Busygin retweeted
here’s something I don’t think I’ve ever seen before: the complete design demo harness for the new Siri UI (“Campo”) is sitting dormant in the framework responsible for rendering it. So if you push the right buttons, you can mess around with Apple’s own prototyping tool!
Roman Busygin retweeted
Because I know everyone was at the edge of their seats, the wireless device mirroring in Device Hub uses an engine that vaguely resembles FaceTime (an HEVC SRTP stream over a QUIC tunnel managed by CoreDevice) and is entitlement-gated (com_apple.private.coredevice.client / com_apple.private.cmcapture.frame-receiver)
