Rust

Bits and pieces of Rust

Useful commands

• To override default toolchain for a particular project: rustup override set nightly. The directory is stored in ~/.rustup/settings.toml (in overrides section) separately from the project itself.

• To print all package dependencies as a nice tree in the command line, we can use cargo tree - more details here (works starting from Rust 1.44)

Closures

• A good post by Steven Donovan about closures in Rust. It makes the connection between closures and structs, explains why move |...| is sometimes needed and why we have to add lifetimes annotations like where F: Fn(i32) -> i32 + 'a>

• All the nitty-gritty details are available in the Rust language reference (sections "Closure expressions" and "Closure types").

Common/standard traits, conversion

• "Rust's Built-in Traits, the When, How & Why" by Lloqiq (2015)

• "The Common Rust Traits" by Steve Donovan (2018)

• "Use conversion traits" part from "Designing elegant APIs in Rust" by Pascal Hertleif (a very insightful post!) (2016)

• "Conversion" section in "Rust by Example"

• "Convenient and idiomatic conversions in Rust" by Ricardo Martins (2016)

• Rust reference: "Special types and traits"

Lifetimes, NLL

• RFC-2094 about Non-Lexical Lifetimes: why and when they are needed, design

• "Lifetimes" and the following sections in Rustonomicon

• "Understanding Rust Lifetimes" by Maksym Zavershynskyi

• Common Rust lifetimes misconceptions

Error handling

• Error handling survey - 13 Nov 2019 - many error handling packages reviewed and compared

• Structuring and handling errors in 2020

• Error handling in Rust by Andrew Gallant (burntsushi)

• The state of error handling in Rust 2018 edition

• Notice: failure is deprecated on Reddit

Profiling on Mac

• Profiling with sample

• "Rust profiling with DTrace and FlameGraph on MacOs" by Carol Nichols, a simple easy to follow reference

• Inferno by Jon Gjengset for producing flame-graphs from process samples. Rust port of flame-graph tools. Its README.md on GitHub has lots of useful information. Btw, there is a 5 hours video stream of how this tool was actually coded live!

Misc

• "Rust Tidbits: What is a Lang Item?" - an interesting explanation about traits and other items known to the Rust compiler and marked with #[lang] annotation. I really enjoyed this article, but for some reason it was quite hard to google to find it again (perhaps because I googled "traits" and "lang" is not a very googleable term).