# /write-swift

Command · Emil Kowalski skills · UI073

Modern Swift for Apple apps: Swift 6 concurrency (code safely running at the same time), value types, Swift Testing, memory management (ARC) and performance.

## Prompt

```text
/write-swift fix this data race
```

**Skip it when:** Choosing a whole page's visual direction. Hallmark and Impeccable handle that.

**Best for:** Animation, polishing components, testing worst cases and choosing libraries.

**Notes:** The first time you call most of these, they reply with one line and wait for your question.

## Skills

- [write-swift](https://atlasscope.dev/skills/write-swift): How to write modern Swift well — modeling with value types, Swift 6 data-race safety and approachable concurrency (@concurrent, main-actor-by-default, actors, task groups), protocols and generics (some vs any), API design, performance and ARC, Swift Testing, macros, and the modern language features agents don't know about yet.

Source: https://atlasscope.dev/prompts/write-swift