Libraries

Rust’s standard library is small but high-quality; the broader ecosystem on crates.io fills in the rest.

Standard Library

• std::io / std::fs , streams and files

• std::collections , HashMap, BTreeMap, VecDeque

• std::sync , Mutex, RwLock, atomics, channels

• std::thread , OS threads

• std::time , Duration and Instant

• std::process , spawn and inspect processes

• std::env , arguments and environment

Cargo

$ cargo new myproj
$ cargo add serde --features derive
$ cargo build --release
$ cargo test
$ cargo doc --open

Useful Crates

• serde + serde_json, (de)serialization

• tokio, async runtime

• reqwest, HTTP client

• axum / actix-web, web frameworks

• clap, CLI argument parsing

• anyhow / thiserror, error handling

• rayon, data parallelism

• tracing, structured logging