M04 Zero Cost
actionbook/rust-skillsRust gives you two main ways to write code that works with many different types. One is generics, which runs at full speed because the compiler knows the exact type ahead of time. The other is trait objects, which lets you handle types decided at runtime but costs a tiny bit of performance.
This guide helps you pick the right tool for each job. You will learn when to use static dispatch with generics and when to use dynamic dispatch with trait objects. It also shows how to fix common errors like E0277 and E0308.
A simple decision chart and quick reference table make it easy to choose. The goal is to write fast, flexible Rust code without unnecessary overhead.
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