Swift Concurrency Expert
harperreed/dotfiles
Swift Concurrency review and remediation for Swift 6.2+. An agent skill from harperreed/dotfiles.
Swift 6.2 易用的并发(Approachable Concurrency)—— 默认单线程,使用 @concurrent 进行显式后台卸载,针对主执行角色(Main Actor)类型的隔离一致性。
$ npx skills add xu-xiang/everything-claude-code-zh --skill swift-concurrency-6-2 -a claude-codeProject install by default; add -g for ~/.claude/skills/.
$ gh skill install xu-xiang/everything-claude-code-zh swift-concurrency-6-2 --agent claude-codeProject scope by default; add --scope user for a personal install. Needs GitHub CLI 2.90.0 or later (public preview).
$ git clone --depth 1 https://github.com/xu-xiang/everything-claude-code-zh.git skills-src && mkdir -p .claude/skills && cp -r skills-src/skills/swift-concurrency-6-2 .claude/skills/swift-concurrency-6-2 && rm -rf skills-srcUse ~/.claude/skills/ instead of .claude/skills for a personal install. The folder must contain SKILL.md.
Claude Code skills documentation · loads skills from .claude/skills/
Install the "swift-concurrency-6-2" agent skill from https://github.com/xu-xiang/everything-claude-code-zh/tree/main/skills/swift-concurrency-6-2 into .claude/skills/swift-concurrency-6-2/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency-6-2", then confirm the skill loads.Claude Code copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$skill-installer install https://github.com/xu-xiang/everything-claude-code-zh/tree/main/skills/swift-concurrency-6-2Type this inside Codex. $skill-installer <name> installs a curated skill from openai/skills. The installer writes to $CODEX_HOME/skills (default ~/.codex/skills). Restart Codex if the skill does not show up.
$ npx skills add xu-xiang/everything-claude-code-zh --skill swift-concurrency-6-2 -a codexProject install goes to .agents/skills/; add -g for ~/.codex/skills/.
$ gh skill install xu-xiang/everything-claude-code-zh swift-concurrency-6-2 --agent codexProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xu-xiang/everything-claude-code-zh.git skills-src && mkdir -p .agents/skills && cp -r skills-src/skills/swift-concurrency-6-2 .agents/skills/swift-concurrency-6-2 && rm -rf skills-srcUse ~/.agents/skills/ instead of .agents/skills for a personal install.
Codex skills documentation · loads skills from .agents/skills/
Install the "swift-concurrency-6-2" agent skill from https://github.com/xu-xiang/everything-claude-code-zh/tree/main/skills/swift-concurrency-6-2 into .agents/skills/swift-concurrency-6-2/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency-6-2", then confirm the skill loads.Codex copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add xu-xiang/everything-claude-code-zh --skill swift-concurrency-6-2 -a cursorProject install goes to .agents/skills/; add -g for ~/.cursor/skills/.
$ gh skill install xu-xiang/everything-claude-code-zh swift-concurrency-6-2 --agent cursorProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xu-xiang/everything-claude-code-zh.git skills-src && mkdir -p .cursor/skills && cp -r skills-src/skills/swift-concurrency-6-2 .cursor/skills/swift-concurrency-6-2 && rm -rf skills-srcUse ~/.cursor/skills/ instead of .cursor/skills for a personal install.
Cursor skills documentation · loads skills from .cursor/skills/, .agents/skills/, .claude/skills/, .codex/skills/
Install the "swift-concurrency-6-2" agent skill from https://github.com/xu-xiang/everything-claude-code-zh/tree/main/skills/swift-concurrency-6-2 into .cursor/skills/swift-concurrency-6-2/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency-6-2", then confirm the skill loads.Cursor copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gemini skills install https://github.com/xu-xiang/everything-claude-code-zh.git --path skills/swift-concurrency-6-2--scope user (default) or --scope workspace; --path is the subfolder of the repo that holds the skill; --consent skips the security confirmation prompt.
$ npx skills add xu-xiang/everything-claude-code-zh --skill swift-concurrency-6-2 -a gemini-cliProject install goes to .agents/skills/; add -g for ~/.gemini/skills/.
$ gh skill install xu-xiang/everything-claude-code-zh swift-concurrency-6-2 --agent gemini-cliProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xu-xiang/everything-claude-code-zh.git skills-src && mkdir -p .gemini/skills && cp -r skills-src/skills/swift-concurrency-6-2 .gemini/skills/swift-concurrency-6-2 && rm -rf skills-srcUse ~/.gemini/skills/ instead of .gemini/skills for a personal install, then run /skills reload.
Gemini CLI skills documentation · loads skills from .gemini/skills/, .agents/skills/
Install the "swift-concurrency-6-2" agent skill from https://github.com/xu-xiang/everything-claude-code-zh/tree/main/skills/swift-concurrency-6-2 into .gemini/skills/swift-concurrency-6-2/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency-6-2", then confirm the skill loads.Gemini CLI copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ gh skill install xu-xiang/everything-claude-code-zh swift-concurrency-6-2Installs for Copilot at project scope by default; add --scope user for a personal install. Preview a skill first with gh skill preview. Needs GitHub CLI 2.90.0 or later (public preview).
$ npx skills add xu-xiang/everything-claude-code-zh --skill swift-concurrency-6-2 -a github-copilotProject install goes to .agents/skills/; add -g for ~/.copilot/skills/.
$ git clone --depth 1 https://github.com/xu-xiang/everything-claude-code-zh.git skills-src && mkdir -p .github/skills && cp -r skills-src/skills/swift-concurrency-6-2 .github/skills/swift-concurrency-6-2 && rm -rf skills-srcUse ~/.copilot/skills/ instead of .github/skills for a personal install. Commit .github/skills so cloud agent and code review can use it.
GitHub Copilot skills documentation · loads skills from .github/skills/, .claude/skills/, .agents/skills/
Install the "swift-concurrency-6-2" agent skill from https://github.com/xu-xiang/everything-claude-code-zh/tree/main/skills/swift-concurrency-6-2 into .github/skills/swift-concurrency-6-2/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency-6-2", then confirm the skill loads.GitHub Copilot copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
$ npx skills add xu-xiang/everything-claude-code-zh --skill swift-concurrency-6-2 -a opencodeOpenCode documents no install command of its own. Project install goes to .agents/skills/; add -g for ~/.config/opencode/skills/.
$ gh skill install xu-xiang/everything-claude-code-zh swift-concurrency-6-2 --agent opencodeProject scope by default (.agents/skills/); add --scope user for a personal install.
$ git clone --depth 1 https://github.com/xu-xiang/everything-claude-code-zh.git skills-src && mkdir -p .opencode/skills && cp -r skills-src/skills/swift-concurrency-6-2 .opencode/skills/swift-concurrency-6-2 && rm -rf skills-srcUse ~/.config/opencode/skills/ instead of .opencode/skills for a personal install.
OpenCode skills documentation · loads skills from .opencode/skills/, .claude/skills/, .agents/skills/
Install the "swift-concurrency-6-2" agent skill from https://github.com/xu-xiang/everything-claude-code-zh/tree/main/skills/swift-concurrency-6-2 into .opencode/skills/swift-concurrency-6-2/ in this project. Copy the whole folder (SKILL.md and every file beside it), keep the folder name "swift-concurrency-6-2", then confirm the skill loads.OpenCode copies the folder itself, the same result as the manual copy. Check what it changed before you commit it.
swift-concurrency-6-2Swift 6.2 易用的并发(Approachable Concurrency)—— 默认单线程,使用 @concurrent 进行显式后台卸载,针对主执行角色(Main Actor)类型的隔离一致性。
Swift Concurrency 6 2 is an agent skill from xu-xiang/everything-claude-code-zh. Swift 6.2 易用的并发(Approachable Concurrency)—— 默认单线程,使用 @concurrent 进行显式后台卸载,针对主执行角色(Main Actor)类型的隔离一致性。
Its SKILL.md is about 1.4k tokens, which your agent loads only when the skill is triggered. It is a single SKILL.md file with no bundled scripts.
It sits in Mobile. It works with Swift. The repository describes itself as: everything-claude-code 中文翻译项目:完整的 Claude Code 配置集合(agents, skills, hooks, commands, rules, MCPs)。源自 Anthropic 黑客松获胜者的实战配置,助力中文工程师高效理解与使用 Claude Code。 The licence is MIT.
4 steps, taken from the first numbered list in SKILL.md.
Read from SKILL.md and the folder at commit dfbf946. It shows what the files ask for, not the result of running them.
Pre-approves nothing: there is no allowed-tools line, so your agent's usual permission prompts apply.
From allowed-tools in the SKILL.md frontmatter.
No scripts in the folder and no shell commands in SKILL.md (its code samples are swift).
From the folder's file list and the shell code blocks in SKILL.md.
No URLs in SKILL.md.
From URLs in SKILL.md, links to its own repository left out.
Names no API keys, tokens, secrets or passwords.
From names ending in _API_KEY, _TOKEN, _SECRET, _KEY or _PASSWORD in SKILL.md.
Swift Concurrency 6 2 loads about 1.4k tokens when it runs. Until then it costs about 31 tokens; SKILL.md has 225 words of instructions outside code blocks.
Estimates: characters ÷ 4, the usual rule of thumb; real counts depend on the model's tokenizer. Scripts and assets cost tokens only if the agent reads them.
The automated check found no risky patterns in SKILL.md.
Automated static check — not a guarantee. Review scripts before installing. It scans the text of SKILL.md for risky patterns (piping downloads into a shell, reading credential files, hidden Unicode, destructive commands); files beside SKILL.md are not scanned.
The full file from xu-xiang/everything-claude-code-zh at commit dfbf946, republished under its MIT licence (© xu-xiang). 225 words, ~1,363 tokens.
.claude/skills/swift-concurrency-6-2/SKILL.md (or your agent's skills folder).采用 Swift 6.2 并发模型的模式:代码默认在单线程运行,并发需显式引入。在不牺牲性能的情况下消除常见的数据竞争(Data-race)错误。
MainActor 的应用架构MainActor 隔离的类型上实现协议一致性(Protocol conformances)在 Swift 6.1 及更早版本中,异步函数(Async functions)可能会被隐式卸载到后台线程,即使在看似安全的代码中也会导致数据竞争错误:
// Swift 6.1: 错误 (ERROR)
@MainActor
final class StickerModel {
let photoProcessor = PhotoProcessor()
func extractSticker(_ item: PhotosPickerItem) async throws -> Sticker? {
guard let data = try await item.loadTransferable(type: Data.self) else { return nil }
// 错误:发送 'self.photoProcessor' 存在引起数据竞争的风险
return await photoProcessor.extractSticker(data: data, with: item.itemIdentifier)
}
}Swift 6.2 修复了这个问题:异步函数默认保留在调用方执行角色(Actor)上。
// Swift 6.2: 正常 (OK) — 异步保留在 MainActor,无数据竞争
@MainActor
final class StickerModel {
let photoProcessor = PhotoProcessor()
func extractSticker(_ item: PhotosPickerItem) async throws -> Sticker? {
guard let data = try await item.loadTransferable(type: Data.self) else { return nil }
return await photoProcessor.extractSticker(data: data, with: item.itemIdentifier)
}
}MainActor 类型现在可以安全地遵守非隔离协议:
protocol Exportable {
func export()
}
// Swift 6.1: 错误 (ERROR) — 跨入主执行角色隔离的代码
// Swift 6.2: 正常 (OK),使用隔离一致性
extension StickerModel: @MainActor Exportable {
func export() {
photoProcessor.exportAsPNG()
}
}编译器确保该一致性仅在主执行角色上使用:
// 正常 (OK) — ImageExporter 也是 @MainActor
@MainActor
struct ImageExporter {
var items: [any Exportable]
mutating func add(_ item: StickerModel) {
items.append(item) // 安全:相同的执行角色隔离
}
}
// 错误 (ERROR) — 非隔离上下文不能使用 MainActor 一致性
nonisolated struct ImageExporter {
var items: [any Exportable]
mutating func add(_ item: StickerModel) {
items.append(item) // 错误:此处无法使用 Main actor 隔离的一致性
}
}使用 MainActor 保护全局/静态状态:
// Swift 6.1: 错误 (ERROR) — 非 Sendable 类型可能具有共享的可变状态
final class StickerLibrary {
static let shared: StickerLibrary = .init() // 错误
}
// 修复:添加 @MainActor 注解
@MainActor
final class StickerLibrary {
static let shared: StickerLibrary = .init() // 正常 (OK)
}Swift 6.2 引入了一种默认推断 MainActor 的模式 —— 无需手动注解:
// 启用 MainActor 默认推断后:
final class StickerLibrary {
static let shared: StickerLibrary = .init() // 隐式为 @MainActor
}
final class StickerModel {
let photoProcessor: PhotoProcessor
var selection: [PhotosPickerItem] // 隐式为 @MainActor
}
extension StickerModel: Exportable { // 隐式为 @MainActor 一致性
func export() {
photoProcessor.exportAsPNG()
}
}此模式为选填项,推荐用于 App、脚本和其他可执行目标。
当你需要真正的并行性时,使用 @concurrent 显式卸载:
重要提示: 此示例需要“易用的并发”构建设置 —— SE-0466(MainActor 默认隔离)和 SE-0461(默认非隔离且非发送)。启用这些设置后,
extractSticker会保留在调用方的执行角色上,从而使可变状态访问变得安全。如果没有这些设置,此代码将存在数据竞争 —— 编译器会对其报错。
nonisolated final class PhotoProcessor {
private var cachedStickers: [String: Sticker] = [:]
func extractSticker(data: Data, with id: String) async -> Sticker {
if let sticker = cachedStickers[id] {
return sticker
}
let sticker = await Self.extractSubject(from: data)
cachedStickers[id] = sticker
return sticker
}
// 将高耗时工作卸载到并发线程池
@concurrent
static func extractSubject(from data: Data) async -> Sticker { /* ... */ }
}
// 调用方必须使用 await
let processor = PhotoProcessor()
processedPhotos[item.id] = await processor.extractSticker(data: data, with: item.id)使用 @concurrent 的步骤:
nonisolated@concurrentasyncawait| 决策 | 原理 |
|---|---|
| 默认单线程 | 大多数自然编写的代码都是无数据竞争的;并发是选填的 |
| 异步保留在调用执行角色上 | 消除导致数据竞争错误的隐式卸载 |
| 隔离一致性 | MainActor 类型可以遵守协议,而无需不安全的临时方案 |
@concurrent 显式选填 | 后台执行是深思熟虑的性能选择,而非偶然 |
MainActor 默认推断 | 减少 App 目标中冗余的 @MainActor 注解 |
| 选填式采用 | 非破坏性的迁移路径 —— 增量启用功能 |
SwiftSettings API@concurrent:先进行性能分析 (Profile),然后卸载热点路径@concurrent —— 图像处理、压缩、复杂计算nonisolated 临时方案或 @Sendable 包装器@concurrent(大多数函数不需要后台执行)nonisolated 来压制编译器错误DispatchQueue 模式model.availability 检查MainActor 为中心的应用架构(大多数 UI App)© xu-xiang, MIT. Rendered from Markdown: HTML in the file is shown as text, images as links, and headings moved down two levels. Raw file
Just SKILL.md in skills/swift-concurrency-6-2 of xu-xiang/everything-claude-code-zh.
Open the folder on GitHubat commit dfbf946
Swift Concurrency 6 2 next to the 5 skills that share the most tags, products or categories with it. Stars are the repository's; “used in” counts other GitHub owners with a copy.
| Skill | Stars | Used in | Tokens | Auto-check | Licence | Repo updated |
|---|---|---|---|---|---|---|
| Swift Concurrency 6 2 this skillxu-xiang/everything-claude-code-zh | 2k | — | ~1.4k | Automated safety check: Pass | MIT | |
| Swift Concurrency Expertharperreed/dotfiles | 334 | 5 repos | ~506 | Automated safety check: Pass | None | |
| Swift Concurrency Expertdavila7/claude-code-templates | 33k | 3 repos | ~1.1k | Automated safety check: Pass | MIT | |
| Swift Concurrencydpearson2699/swift-ios-skills | 1.2k | — | ~5k | Automated safety check: Pass | Custom licence | |
| Swift Concurrency 6 2affaan-m/ECC | 276k | — | ~1.5k | Automated safety check: Pass | MIT | |
| Memorygustavscirulis/snapgrid | 116 | 1 repos | ~3k | Automated safety check: Pass | Custom licence |
harperreed/dotfiles
Swift Concurrency review and remediation for Swift 6.2+. An agent skill from harperreed/dotfiles.
davila7/claude-code-templates
Review and fix Swift concurrency issues such as actor isolation and Sendable violations.
dpearson2699/swift-ios-skills
Resolve Swift concurrency compiler errors, adopt approachable concurrency (SE-0466), and write data-race-safe async code.
affaan-m/ECC
Swift 6.2のアクセシブルな並行処理——デフォルトはシングルスレッド、@concurrentは明示的なバックグラウンドオフロードに使用し、分離の一貫性はMainActor型に使用する。
gustavscirulis/snapgrid
Swift 6.2 InlineArray and Span types for zero-overhead memory access, fixed-size collections, and safe pointer alternatives.
gustavscirulis/snapgrid
Swift 6.2 concurrency updates including default MainActor inference, @concurrent for background work, isolated conformances, and approachable concurrency migration.
xu-xiang/everything-claude-code-zh
Everything Claude Code 的交互式安装程序 — 引导用户选择并安装技能和规则到用户级或项目级目录,验证路径,并可选择优化已安装文件。
xu-xiang/everything-claude-code-zh
基于本能(Instinct)的学习系统,通过钩子(hooks)观察会话,创建带有置信度评分的原子本能,并将其演化为技能(Skills)、命令(Commands)或智能体(Agents)。v2.1 版本增加了项目作用域(project-scoped)的本能,以防止跨项目污染。
xu-xiang/everything-claude-code-zh
生产级 API 的 REST API 设计模式,包括资源命名、状态码、分页、过滤、错误响应、版本控制和速率限制. An agent skill from xu-xiang/everything-claude-code-zh.
xu-xiang/everything-claude-code-zh
后端架构模式、API 设计、数据库优化以及适用于 Node.js、Express 和 Next.js API 路由的服务端最佳实践。
xu-xiang/everything-claude-code-zh
后端架构模式、API 设计、数据库优化以及 Node.js、Express 和 Next.js API 路由的服务端最佳实践。
xu-xiang/everything-claude-code-zh
后端架构模式、API 设计、数据库优化以及针对 Node.js、Express 和 Next.js API 路由的服务端最佳实践。
Works with
Categories
Swift 6.2 易用的并发(Approachable Concurrency)—— 默认单线程,使用 @concurrent 进行显式后台卸载,针对主执行角色(Main Actor)类型的隔离一致性。. Swift Concurrency 6 2 is an agent skill from xu-xiang/everything-claude-code-zh.
Swift Concurrency 6 2 fits situations like: mobile work in your project.
Run `npx skills add xu-xiang/everything-claude-code-zh --skill swift-concurrency-6-2 -a claude-code`. Or copy the skill folder (skills/swift-concurrency-6-2 in xu-xiang/everything-claude-code-zh) into .claude/skills/swift-concurrency-6-2 in your project. Claude Code loads it when a task matches its description.
Run `npx skills add xu-xiang/everything-claude-code-zh --skill swift-concurrency-6-2 -a codex`. Or copy the skill folder (skills/swift-concurrency-6-2 in xu-xiang/everything-claude-code-zh) into .agents/skills/swift-concurrency-6-2 in your project. Codex loads it when a task matches its description.
Cursor, Gemini CLI, GitHub Copilot and OpenCode also load SKILL.md folders. With the skills CLI, run `npx skills add xu-xiang/everything-claude-code-zh --skill swift-concurrency-6-2 -a cursor` (or -a gemini-cli, github-copilot or opencode for the others). To copy it by hand, put the folder in .cursor/skills/swift-concurrency-6-2, .gemini/skills/swift-concurrency-6-2, .github/skills/swift-concurrency-6-2 and .opencode/skills/swift-concurrency-6-2 in your project.
SKILL.md names no scripts, command-line tools or credentials: Swift Concurrency 6 2 is instructions for the agent only.
SKILL.md contains no URLs. Any network use would come from the scripts or tools the agent runs. This is read from the text; nothing was executed.
Our automated static check of SKILL.md found no risky patterns, such as piping downloads into a shell, reading credential files or hidden Unicode. It is not a guarantee. Review the folder before installing.
Swift Concurrency 6 2 is published under the MIT licence (the repository's licence). It allows redistribution, so the full SKILL.md is shown on this page.
About 1.4k tokens (SKILL.md is roughly 5.5k characters). Agents keep only the skill's name and description in context until a task matches; then they load SKILL.md in full.
Skills that share tags, products or a category with Swift Concurrency 6 2: Swift Concurrency Expert (harperreed/dotfiles, 334 stars), Swift Concurrency Expert (davila7/claude-code-templates, 33k stars), Swift Concurrency (dpearson2699/swift-ios-skills, 1.2k stars) and Swift Concurrency 6 2 (affaan-m/ECC, 276k stars). The comparison table on this page puts their stars, adoption, token cost, safety result and licence side by side.
xu-xiang (a GitHub user) maintains it in xu-xiang/everything-claude-code-zh, which has 1,978 GitHub stars. The repository holds 78 skills in this directory. The repository was last updated on March 5, 2026.
Source: xu-xiang/everything-claude-code-zh on GitHub. Facts on this page come from the repository at the commit we read; the author's words are quoted as theirs.