Rust in Action Skill

Apply the systems programming practices from Tim McNamara's "Rust in Action" to review existing code and write new Rust. This skill operates in two modes: Review Mode (analyze code for violations of Rust idioms and systems programming correctness) and Write Mode (produce safe, idiomatic, systems-capable Rust from scratch).

The key differentiator of this book: Rust is taught through real systems — a CPU simulator, key-value store, NTP client, raw TCP stack, and OS kernel. Practices focus on correctness at the hardware boundary, not just language syntax.

Reference Files

• practices-catalog.md — Before/after examples for ownership, smart pointers, bit ops, I/O, networking, concurrency, error wrapping, and state machines

How to Use This Skill

Before responding, read practices-catalog.md for the topic at hand. For ownership/borrowing issues read the ownership section. For systems/binary data read the data section. For a full review, read all sections.

Mode 1: Code Review

When the user asks you to review Rust code, follow this process: