Miscellaneous Rust

Programming Tips in Rust

Syntax

pub (in crate::module) func_name() -> Result<T> {
  ...
}

Printing

You can center and pad strings in Rust using the following formatting syntax:

{:#^10}

Example:

# To center the word TODO in a string and surround it by '#'s:
$> println!("{:#^10}", "TODO");

# Output will be three '#'s TODO and then three more '#'s.
###TODO###

Box

You can leak memory using Box::leak. This is useful when you want to instantiate something on the heap and know it's going to stick around for the lifetime of the application. This means you can get a 'static lifetime reference to the object and don't have to worry about the cost of deallocating the object during runtime.

Example:

let x = Box::new(41);
let static_ref: &'static mut usize = Box::leak(x);
*static_ref += 1;
assert_eq!(*static_ref, 42);

See: Box::leak

Guides, Courses, and Books

Books

• The Cargo Book

Frameworks

Web Frameworks

• Actix-Web
• Axum
• Axum Ecosystem
• Loco

Example Code

The following resources are good examples of code written in Rust, or are samples of real world applications (no emphasis on good or bad here).

• Real World Axum and Sqlx
• TCPProxy

  This is a good example of async network code.

Other Links

• How do I start
• Everything I know (Rust)
• Are We Yet?
• Awesome Rust
• Rust CI Release Template
• David Tolnay writes good Rust #anyhow-author #thiserror-author
• Idiomatic Rust
• Aquascope Playgroud

  This is a cool tool that shows you things about your code.

• Rust Cookbook
• Idiomatic Rust

  This repository collects resources for writing clean, idiomatic Rust code.

Tools

Sites, Blogs, and Newsletters

• Aweesome Rust Repo Stats

  This cool site shows the stats of the most starred and active Rust repositories on GitHub. It's a great way to find out what's popular in the Rust community.

Debugging Tools

• FireDBG

Cargo tools

Testing

• Home - cargo-nextest

  Test runner

Benchmarking

• sharkdp/hyperfine: A command-line benchmarking tool (github.com)