Rust Examples

Collection of Rust code examples for my blog F7L8C9.

Licensed under the MIT License. See file LICENSE.

Cargo

Rust build tool and package manager. Select a Rust edition in the Cargo.toml
file of your package. An edition is a curated set of dependencies that work well
together. Somewhat like a Linux distribution.

Building with Cargo assumes that a linker has been installed already. If not, it
can be installed on Linux with sudo apt install build-essential.

• Creating a new package with cargo new <package_name>
  • Add --bin to create a binary program
  • Add --lib to create a library
  • Add --vcs none to skip Git repository initialization
• Build package with cargo build
• Run package with cargo run
• Test package with cargo test
• Run rustfmt against package with cargo fmt
• Build documentation for package with cargo doc
• Publish a library to crates.io with cargo publish
• Update dependencies to the latest version with cargo update (updates Cargo.lock file)

Crate registry is at crates.io. Documentation for crates
is at Docs.rs.

If you’re building a non-end product, such as a rust library that other rust
packages will depend on, put Cargo.lock in your .gitignore. If you’re
building an end product, which are executable like command-line tool or an
application, or a system library with crate-type of staticlib or cdylib, check
Cargo.lock into git. See Cargo FAQ.

Rustup

Show the active and installed toolchains or profiles with rustup show.

Check for updates to toolchains and rustup with rustup check.

Update environment to latest stable version with rustup update stable.

WebAssembly

Use wasm-pack build to create a package.

Tips

Rust allows trailing commas.

struct User {
  name: String,
  age: u8,
}

Links

• C2Rust - translate C modules into semantically equivalent Rust code
• clap - command line argument parser
• dbus
• Foreign Function Interface
• Official Docker Images
• PyO3 - Rust bindings for Python, including tools for creating native Python extension modules
• rust-analyzer extension for Microsoft Visual Studio Code
• Rust Language Cheat Sheet
• Rust mode for Emacs
• RustPython - Python interpreter written in Rust
• Serde - framework for serializing and deserializing Rust data structures
• Tokio
• Unleash Rust SDK - system for feature flags / feature toggles
• Web Assembly
  • Compiling from Rust to WebAssembly.
  • Rust and WebAssembly
• Web Development
  • Axum
  • Rocket - web framework
  • Warp - web server framework

Tasks

• Containerize verb service
• Update Wasm example
• Add C interface example