AgentSkillsCN

maverick-rust-performance

Rust 性能优化与零成本抽象

SKILL.md
--- frontmatter
name: maverick-rust-performance
description: Rust performance optimization and zero-cost abstractions
version: 1.0.0
triggers:
  - clone
  - to_owned
  - Vec::with_capacity
  - String::with_capacity
  - iter()
  - collect()
  - performance
  - optimize
  - allocation

Rust Performance Skill

Avoid Unnecessary Clones

rust
// BAD
fn process(s: String) -> String {
    let s_copy = s.clone();  // Unnecessary!
    s_copy.to_uppercase()
}

// GOOD
fn process(s: String) -> String {
    s.to_uppercase()
}

// OR borrow if you don't need ownership
fn process(s: &str) -> String {
    s.to_uppercase()
}

Preallocate Collections

rust
// BAD - many reallocations
let mut vec = Vec::new();
for i in 0..1000 {
    vec.push(i);
}

// GOOD - single allocation
let vec: Vec<_> = (0..1000).collect();

// OR with_capacity
let mut vec = Vec::with_capacity(1000);

Zero-Cost Abstractions

Iterators are as fast as loops due to inlining and optimization.

Review Severity

  • •MAJOR: Unnecessary clones in hot path
  • •MINOR: Could preallocate collection
  • •SUGGESTION: Could use iterator instead of loop