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coding-guidelines

Skill1 starsChanged 4 months agoMITView on GitHub

Use when asking about Rust code style or best practices. Keywords: naming, formatting, comment, clippy, rustfmt, lint, code style, best practice, P.NAM, G.FMT, code review, naming convention, variable naming, function naming, type naming, 命名规范, 代码风格, 格式化, 最佳实践, 代码审查, 怎么命名

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SKILL.md

Rust Coding Guidelines (50 Core Rules)

Naming (Rust-Specific)

RuleGuideline
No get_ prefixfn name() not fn get_name()
Iterator conventioniter() / iter_mut() / into_iter()
Conversion namingas_ (cheap &), to_ (expensive), into_ (ownership)
Static var prefixG_CONFIG for static, no prefix for const

Data Types

RuleGuideline
Use newtypesstruct Email(String) for domain semantics
Prefer slice patternsif let [first, .., last] = slice
Pre-allocateVec::with_capacity(), String::with_capacity()
Avoid Vec abuseUse arrays for fixed sizes

Strings

RuleGuideline
Prefer bytess.bytes() over s.chars() when ASCII
Use Cow<str>When might modify borrowed data
Use format!Over string concatenation with +
Avoid nested iterationcontains() on string is O(n*m)

Error Handling

RuleGuideline
Use ? propagationNot try!() macro
expect() over unwrap()When value guaranteed
Assertions for invariantsassert! at function entry

Memory

RuleGuideline
Meaningful lifetimes'src, 'ctx not just 'a
try_borrow() for RefCellAvoid panic
Shadowing for transformationlet x = x.parse()?

Concurrency

RuleGuideline
Identify lock orderingPrevent deadlocks
Atomics for primitivesNot Mutex for bool/usize
Choose memory order carefullyRelaxed/Acquire/Release/SeqCst

Async

RuleGuideline
Sync for CPU-boundAsync is for I/O
Don't hold locks across awaitUse scoped guards

Macros

RuleGuideline
Avoid unless necessaryPrefer functions/generics
Follow Rust syntaxMacro input should look like Rust

Deprecated → Better

DeprecatedBetterSince
lazy_static!std::sync::OnceLock1.70
once_cell::Lazystd::sync::LazyLock1.80
std::sync::mpsccrossbeam::channel-
std::sync::Mutexparking_lot::Mutex-
failure/error-chainthiserror/anyhow-
try!()? operator2018

Quick Reference

Naming: snake_case (fn/var), CamelCase (type), SCREAMING_CASE (const)
Format: rustfmt (just use it)
Docs: /// for public items, //! for module docs
Lint: #![warn(clippy::all)]

Claude knows Rust conventions well. These are the non-obvious Rust-specific rules.

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