What's Next?

Congratulations

You have completed the Rust course. You now understand Rust's core features: ownership, borrowing, structs, enums, traits, generics, closures, iterators, and collections.

That is a real foundation. Rust has a steep initial learning curve, and you have climbed it.

What to Explore Next

Lifetimes

Lifetimes are explicit annotations that tell the compiler how long references are valid. They appear in function signatures when the compiler cannot infer the relationship:

fn longest<'a>(x: &'a str, y: &'a str) -> &'a str {
    if x.len() > y.len() { x } else { y }
}

Smart Pointers

  • Box<T> — heap allocation; used for recursive types and large values
  • Rc<T> / Arc<T> — reference-counted shared ownership (single-threaded / thread-safe)
  • Cell<T> / RefCell<T> — interior mutability

Concurrency

Rust's ownership system makes concurrent programming safe:

  • std::thread::spawn — spawn OS threads
  • std::sync::{Mutex, RwLock} — shared-state concurrency
  • std::sync::mpsc — message-passing channels
  • Tokio / async-std — async runtimes for I/O-bound work

The Ecosystem

  • Cargo — Rust's build tool and package manager. Add dependencies to Cargo.toml.
  • crates.io — The Rust package registry.
  • serde — Serialization/deserialization framework.
  • tokio — Async runtime for building reliable network applications.
  • axum / actix-web — Web frameworks built on tokio.
  • rayon — Data parallelism library.

Resources

  • The Rust Book — The official guide. Free online. Covers everything in this course and more.
  • Rust by Example — Learn Rust through annotated examples.
  • Rustlings — Small exercises for getting used to the compiler.
  • The Rustonomicon — The dark arts of unsafe Rust.
  • crates.io — Browse the Rust package ecosystem.
  • Programming Rust by Blandy, Orendorff & Tindall (O'Reilly) — The most comprehensive Rust book.
← Previous