Rust Abstraction Advanced

Zero-Cost Abstractions: Trait System & Pattern Matching

Tổng quan

Rust cung cấp abstraction mạnh mẽ mà không có runtime cost. Hiểu cách compiler xử lý traits sẽ giúp bạn viết code hiệu quả hơn.

Nội dung

🔷 Trait System

• Static Dispatch: Monomorphization, code duplication
• Dynamic Dispatch: Trait Objects, Vtable internals
• Performance Trade-offs: Binary size vs runtime
• Marker Traits: Send, Sync, Copy, Drop

🧩 Pattern Matching

• Match Expressions: Exhaustiveness, Guards
• Destructuring: Structs, Enums, Nested patterns
• Advanced Patterns: @ bindings, Or patterns

Zero-Cost Abstraction

💡 NGUYÊN TẮC RUST

"What you don't use, you don't pay for. And what you do use, you couldn't hand code any better." — Bjarne Stroustrup (C++), adopted by Rust