Can it detect data races?

Yes, the auditing workflow specifically looks for non-Sendable types crossing isolation boundaries and other common thread-safety issues in your Swift code.

What is the 'Approachable Concurrency' principle?

It is a Swift 6.2+ pattern where code defaults to MainActor isolation to simplify development while ensuring thread safety and reducing Sendable errors.

How does this skill help with legacy code?

It provides specific refactoring templates to convert old DispatchQueues, Combine publishers, and completion-handler callbacks into modern async/await patterns.

Is this skill compatible with SwiftUI?

Absolutely; it includes specific guidance for MainActor isolation in Views, @Observable state management, and using .task modifiers for lifecycle-aware concurrency.

Modern Swift Concurrency

Name: Modern Swift Concurrency
Author: jamesrochabrun

byjamesrochabrun

•

Mobile Development

Simplifies building, auditing, and refactoring Swift applications using modern async/await and actor-based concurrency patterns.

Modern Swift Concurrency provides a comprehensive framework for implementing thread-safe code in Swift 6 and beyond. It guides developers through the complexities of structured concurrency, including actor isolation, Sendable compliance, and the 'Approachable Concurrency' paradigm. By offering structured workflows for creating new async tasks, auditing existing code for data races, and migrating legacy callback-based logic, this skill ensures high-performance, crash-free applications while adhering to the latest Apple development standards and Xcode 26+ configurations.

Key Features

01Standardized workflows for building, auditing, and refactoring async code

02Comprehensive guidance on @MainActor isolation and actor-based state management

0326 GitHub stars

04Legacy migration patterns for Callbacks, Combine, and DispatchQueue

05Sendable type validation and isolation domain management

06Detection and resolution of common pitfalls like blocking the cooperative thread pool

Use Cases

01Designing complex background processing tasks using TaskGroups and async let

02Migrating a legacy iOS app from GCD or Combine to Swift 6 structured concurrency

03Auditing a codebase for data races and thread safety before a major release

What are Skills?·How to Install

Install with 🐟 Skill.Fish

npx skillfish add jamesrochabrun/skills swift-concurrency

For use in Claude.ai and ChatGPT

Download Skill