swift-concurrency

Provide Swift 6 concurrency patterns for actors, Sendable types, and AsyncSequence.

1|Updated Apr 5, 2026
One-click install
npx skills add https://github.com/piemonte/skills --skill swift-concurrency-piemonte
Or copy as Structured Prompt for Agent
Please help me install this Agent Skill.
Skill: swift-concurrency
Source: https://github.com/piemonte/skills/tree/main/swift-concurrency
Command: npx skills add https://github.com/piemonte/skills --skill swift-concurrency-piemonte

SYSTEM DOCUMENTATION & REQUIREMENTS

What problem does it solve?

This skill helps developers write safe, scalable Swift concurrency code by leveraging actors, Sendable types, and AsyncSequence to enforce isolation, determinism, and robust error handling.

Core Features & Use Cases

  • Actor Patterns: standard actors, isolation contexts, and service patterns to model concurrency safely.
  • AsyncSequence & Streams: progress updates, real-time data flows, and event-driven pipelines.
  • Task Cancellation & Resource Management: structured concurrency, cancellation checks, and clean-up patterns.
  • Sendable Conformance: building thread-safe value types and safe data models.

Quick Start

Install and start applying Swift 6 concurrency patterns in your project by introducing actors and Sendable types to replace shared mutable state.

Frequently Asked Questions about swift-concurrency

High-intent search queries and answers about installing and using this skill.

FAQPage Schema
How do I write safe Swift concurrency code using actors and Sendable types?

Swift concurrency enforces safe code by using actors to manage isolation and Sendable types for thread-safe data models. This pattern eliminates shared mutable state, providing strict concurrency guarantees and robust error handling for scalable applications.

What is the best way to handle task cancellation and resource cleanup in Swift structured concurrency?

Handle task cancellation in Swift structured concurrency by implementing explicit cancellation checks and clean-up patterns within your tasks. This ensures resources are safely released and pipelines terminate correctly when parent operations are cancelled.

How do I use AsyncSequence for real-time data flows and event-driven pipelines in Swift?

Use AsyncSequence in Swift to model real-time data flows and event-driven pipelines by asynchronously iterating over values. This pattern handles progress updates and event streams efficiently while integrating with structured concurrency cancellation.

Does this Swift concurrency approach require Swift 6 compatibility?

Yes, applying these Swift concurrency patterns requires Swift 6 compatibility to fully leverage strict concurrency, isolation, and Sendable constraints. The patterns are designed specifically for Swift 6's strict concurrency environment and testability requirements.

How do I test Swift actors and async code patterns effectively?

Test Swift actors and async code by structuring logic around testable patterns that validate isolation contexts and cancellation management. Designing services with Sendable data models allows you to deterministically verify async pipelines and error handling.