Swift编码风格

Swift编码风格 is a cursor rule for Cursor from nongjun/feishu-cursor-claw. It costs 0 tokens per session (388 once invoked), scanned A, original, MIT.

A set of Swift coding rules covering formatting, naming, immutable values, error handling, and concurrency. Swift is Apple's programming language for apps and other software.

In plain words
What is it for?
Use it when writing or reviewing Swift code, especially its structure, names, formatting, errors, and concurrent tasks.
Why use it?
It gives the codebase consistent conventions and encourages safer handling of values, errors, and concurrent work.

Cursor rule for Cursor

Install

Getting it into your agent

One page per mod, every tool's command on it. A separate URL per tool would split the same page into five that compete with each other.

agentmods
npx agentmods add rules/nongjun/feishu-cursor-claw/swift
Clone the repo
git clone --depth 1 https://github.com/nongjun/feishu-cursor-claw

Made for: Cursor.

Wrote this? Show the measurements

A badge with what this costs and how it scanned, read live from this page, so it follows the numbers instead of freezing them. Markdown for a README, HTML for a documentation site or a project page.

agentmods badge for Swift编码风格

README.md
[![agentmods](https://agentmods.dev/badge/rules/nongjun/feishu-cursor-claw/swift.svg)](https://agentmods.dev/rules/nongjun/feishu-cursor-claw/swift)
Your own site
<a href="https://agentmods.dev/rules/nongjun/feishu-cursor-claw/swift"><img src="https://agentmods.dev/badge/rules/nongjun/feishu-cursor-claw/swift.svg" alt="Measured on agentmods" height="20"></a>
Per session 0 Nothing until a file matches its globs; then the whole rule loads.
When invoked 388 The whole file, excluding the scripts and references it only reads on demand.
Security scan A 0 findings. Scan, not verified.
Origin original No closer match found in the catalogue.
Token cost

What it costs to keep this loaded

Counted locally with the o200k_base tokenizer, which is exact for GPT models; Claude uses its own tokenizer and its counts differ. Treat this as one consistent yardstick across the catalogue rather than a bill. Prices are per million input tokens.

ModelPer sessionOnce invoked
Fable 5 $0.00000 $0.00388
Opus 5 $0.00000 $0.00194
Sonnet 5 $0.00000 $0.00078
Haiku 4.5 $0.00000 $0.00039

Measured 3d ago against content hash 26c3e1a351fa, method: parsed. Prices are Anthropic first-party input rates as of 2026-08-30, from the pricing page.

Security

Grade A, and why

Swift编码风格 scanned grade A with 0 findings against 26 rules in 11 categories — prompt injection, anti-refusal, data exfiltration, privilege escalation, supply chain, agent snooping, system-prompt leakage, SSRF and excessive agency — measured 3d ago.

A static scan of the body, not an audit. Every finding is printed with the line that produced it so you can judge whether it matters here. A mod is markdown that instructs an agent; that is exactly why what it instructs is worth reading.

Nothing flagged

None of the 26 patterns this scan looks for appear in this file: no shell pipes, no recursive deletes, no credential paths, no hidden text, no instruction-override or anti-refusal phrasing, no agent-config snooping. That is not a guarantee, it is the absence of the things that are checkable.

.cursor/rules/Swift编码风格.mdc · 48 lines

What it actually says

Swift 编码风格

本文件以 Swift 特定内容扩展通用编码风格规则。

格式化

  • SwiftFormat 用于自动格式化,SwiftLint 用于风格检查
  • swift-format 作为替代方案已内置于 Xcode 16+

不可变性

  • 优先使用 let 而非 var——将所有变量定义为 let,仅在编译器要求时改为 var
  • 默认使用具有值语义的 struct;仅在需要标识或引用语义时使用 class

命名

遵循 Apple API 设计指南

  • 在使用点保持清晰——省略不必要的词
  • 根据角色而非类型命名方法和属性
  • 使用 static let 定义常量,而非全局常量

错误处理

使用类型化 throws(Swift 6+)和模式匹配:

func load(id: String) throws(LoadError) -> Item {
    guard let data = try? read(from: path) else {
        throw .fileNotFound(id)
    }
    return try decode(data)
}

并发

启用 Swift 6 严格并发检查。优先使用:

  • Sendable 值类型用于跨隔离边界传递数据
  • Actor 用于共享可变状态
  • 结构化并发(async letTaskGroup)优于非结构化的 Task {}
Changes

What this file has done since we first saw it

Hashed on every crawl. A supply-chain change to an agent config is a question of when, not whether, so the history is kept rather than the latest state alone.

  1. 3d ago First seen · 48 lines · 0 tokens per session scan A 26c3e1a351fa

Subscribe to this mod's changes

Swift编码风格 is a cursor rule published in the GitHub repository nongjun/feishu-cursor-claw (14 stars, last pushed 1mo ago), licensed MIT. It costs nothing until one of its globs matches a file; then it loads 388 tokens. A static security scan graded it A with 0 findings. No closer match exists in the catalogue, so it is treated as the original; first seen 2026-08-30.