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Oleksandr Bezdieniezhnykh
18 lines
1.1 KiB
Plaintext
18 lines
1.1 KiB
Plaintext
---
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description: "Rust coding conventions: error handling with Result/thiserror/anyhow, ownership patterns, clippy, module structure"
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globs: ["**/*.rs", "**/Cargo.toml", "**/Cargo.lock"]
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---
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# Rust
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- Use `Result<T, E>` for recoverable errors; `panic!` only for unrecoverable
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- Use `?` operator for error propagation; define custom error types with `thiserror`; use `anyhow` for application-level errors
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- Prefer references over cloning; minimize unnecessary allocations
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- Never use `unwrap()` in production code; use `expect()` with descriptive message or proper error handling
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- Minimize `unsafe`; document invariants when used; isolate in separate modules
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- Use `Arc<Mutex<T>>` for shared mutable state; prefer channels (`mpsc`) for message passing
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- Use `clippy` and `rustfmt`; treat clippy warnings as errors in CI
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- Module structure: `src/main.rs` or `src/lib.rs` as entry; submodules in separate files
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- Use `#[cfg(test)]` module for unit tests; `tests/` directory for integration tests
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- Use feature flags for conditional compilation
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- Use `serde` for serialization with `derive` feature
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