rust-patterns

npx skills add mturac/everything-openai-codex --skill rust-patterns --agent codex

Same command for any agent — swap --agent for claude-code, cursor, copilot.

# Rust Development Patterns Idiomatic Rust patterns and best practices for building safe, performant, and maintainable applications. ## When to Use - Writing new Rust code - Reviewing Rust code - Refactoring existing Rust code - Designing crate structure and module layout ## How It Works This skill enforces idiomatic Rust conventions across six key areas: ownership and borrowing to prevent data races at compile time, `Result`/`?` error propagation with `thiserror` for libraries and `anyhow` for applications, enums and exhaustive pattern matching to make illegal states unrepresentable, traits and generics for zero-cost abstraction, safe concurrency via `Arc<Mutex<T>>`, channels, and async/await, and minimal `pub` surfaces organized by domain. ## Core Principles ### 1. Ownership and Borrowing Rust's ownership system prevents data races and memory bugs at compile time. ```rust // Good: Pass references when you don't need ownership fn process(data: &[u8]) -> usize { data.len() } // Good: Take ownership only when you need to store or consume fn store(data: Vec<u8>) -> Record { Record { payload: data } } // Bad: Cloning unnecessarily to avoid borrow checker fn process_bad(data: &Vec<u8>)

Build and check
cargo build
cargo check              # Fast type checking without codegen
cargo clippy             # Lints and suggestions
cargo fmt                # Format code
Testing
cargo test
cargo test -- --nocapture    # Show println output
cargo test --lib             # Unit tests only
cargo test --test integration # Integration tests only