This May in Rust

News and Announcements

• Rust 1.35.0 has been released!
  • Goodbye FnBox, hello Box<dyn FnOnce>!
  • Coercing closures to unsafe fn pointers.
  • Calling dbg!() with no arguments.
  • … and more!
• mem::uninitialized is deprecated, use MaybeUninit instead!
• Graphics Team ships WebRender MVP! - WebRender is now being used in Firefox on Windows 10 devices with NVIDIA graphics cards.
• Security advisory for the standard library - A security vulnerability was discovered with Error::type_id. A fix was issued in Rust 1.34.2.
• A final proposal for await syntax - It’s wild y’all. See also the discussion summary for additional background.

Helpful Articles

• Rust in Motion (paid product) - An introductory course in Rust from Carol Nichols and Jake Goulding.
• Rust in Action (paid product) - A book exploring how to use Rust for low-level development.
• Rust Patterns: Enums Instead Of Booleans - Exaustive pattern matching makes enums safer and more ergonomic, even when a boolean would be sufficient.
• A (type-based) Rust cheatsheet - A quick reference for loads of functionality on built-in types.

Tales from Production

• Using Rust to Scale Elixir for 11 Million Concurrent Users - How the folks at Discord used Rust to massively improve the performance of tracking users in their servers.
• Rust in Avast - How the folks at Avast replaced a legacy Java service with Rust.
• Giving up on wlroots-rs - A postmortem on the attempt to reimplement Way Cooler on top of wlroots, focussing on why it was impractical to implement functionality from wlroots in Rust.
• How Rust Solved Dependency Hell

Toys and Things

• memory-profiler - A memory profiler for Linux.
• momo - A procedural macro for reducing the compile time and code size for generic code.
• cloudsmith now provides private Cargo registries