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From 9arm-skills
Provides Rust coding guidelines covering naming, error handling, concurrency, async, and deprecated patterns. Helps enforce consistent code style and best practices.
How this skill is triggered — by the user, by Claude, or both
Slash command
/9arm-skills:coding-guidelinesThe summary Claude sees in its skill listing — used to decide when to auto-load this skill
| Rule | Guideline |
| Rule | Guideline |
|---|---|
No get_ prefix | fn name() not fn get_name() |
| Iterator convention | iter() / iter_mut() / into_iter() |
| Conversion naming | as_ (cheap &), to_ (expensive), into_ (ownership) |
| Static var prefix | G_CONFIG for static, no prefix for const |
| Rule | Guideline |
|---|---|
| Use newtypes | struct Email(String) for domain semantics |
| Prefer slice patterns | if let [first, .., last] = slice |
| Pre-allocate | Vec::with_capacity(), String::with_capacity() |
| Avoid Vec abuse | Use arrays for fixed sizes |
| Rule | Guideline |
|---|---|
| Prefer bytes | s.bytes() over s.chars() when ASCII |
Use Cow<str> | When might modify borrowed data |
Use format! | Over string concatenation with + |
| Avoid nested iteration | contains() on string is O(n*m) |
| Rule | Guideline |
|---|---|
Use ? propagation | Not try!() macro |
expect() over unwrap() | When value guaranteed |
| Assertions for invariants | assert! at function entry |
| Rule | Guideline |
|---|---|
| Meaningful lifetimes | 'src, 'ctx not just 'a |
try_borrow() for RefCell | Avoid panic |
| Shadowing for transformation | let x = x.parse()? |
| Rule | Guideline |
|---|---|
| Identify lock ordering | Prevent deadlocks |
| Atomics for primitives | Not Mutex for bool/usize |
| Choose memory order carefully | Relaxed/Acquire/Release/SeqCst |
| Rule | Guideline |
|---|---|
| Sync for CPU-bound | Async is for I/O |
| Don't hold locks across await | Use scoped guards |
| Rule | Guideline |
|---|---|
| Avoid unless necessary | Prefer functions/generics |
| Follow Rust syntax | Macro input should look like Rust |
| Deprecated | Better | Since |
|---|---|---|
lazy_static! | std::sync::OnceLock | 1.70 |
once_cell::Lazy | std::sync::LazyLock | 1.80 |
std::sync::mpsc | crossbeam::channel | - |
std::sync::Mutex | parking_lot::Mutex | - |
failure/error-chain | thiserror/anyhow | - |
try!() | ? operator | 2018 |
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.
7plugins reuse this skill
First indexed Jul 7, 2026
Showing the 6 earliest of 7 plugins
npx claudepluginhub bossoq/bossoq-skillsProvides Rust coding guidelines covering naming, error handling, concurrency, async, and deprecated patterns. Helps enforce consistent code style and best practices.
Provides 265 Rust coding rules across 26 categories for writing, reviewing, and refactoring Rust code. Covers ownership, error handling, async, concurrency, unsafe code, API design, memory, performance, and testing.
Guides Rust best practices, common patterns, and idiomatic code including borrowing, error propagation, iterators, and design patterns like builder and newtype.