Rust Code Simplifier

Proactive pattern guide for writing simple, idiomatic Rust. Apply these patterns whenever writing or modifying Rust code — not only when asked to simplify.

Project rules: These patterns align with .claude/rules/rust-patterns.md. When in doubt, re-read the rules file.

1. Iterator Chains Over Manual Loops

Use iterator chains for transformation logic. Reserve for loops only when the body needs early error returns with ?.

// WRONG
let mut names = Vec::new();
for tool in tools {
    if tool.is_available() {
        names.push(tool.name().to_owned());
    }
}