Swift Concurrency

Overview

This skill provides guidance for writing thread-safe Swift code using modern concurrency patterns. It covers three main workflows: building new async code, auditing existing code for issues, and refactoring legacy patterns to Swift 6+.

Core principle: Isolation is inherited by default. With Approachable Concurrency, code starts on MainActor and propagates through the program automatically. Opt out explicitly when needed.

Workflow Decision Tree