Hello and welcome to another issue of This Week in Rust! Rust is a systems language pursuing the trifecta: safety, concurrency, and speed. This is a weekly summary of its progress and community. Want something mentioned? Tweet us at @ThisWeekInRust or send us a pull request. Want to get involved? We love contributions.

This Week in Rust is openly developed on GitHub. If you find any errors in this week's issue, please submit a PR.

News & Blog Posts

Crate of the Week

This week's crate of the week is tokio, a high-level asynchronous IO library based on futures. Thanks to notriddle for the suggestion.

Submit your suggestions and votes for next week!

Call for Participation

Always wanted to contribute to open-source projects but didn't know where to start? Every week we highlight some tasks from the Rust community for you to pick and get started!

Some of these tasks may also have mentors available, visit the task page for more information.

If you are a Rust project owner and are looking for contributors, please submit tasks here.

84 pull requests were merged in the last two weeks.

New Contributors

Cobrand

Jake Goldsborough

John Firebaugh

Justin LeFebvre

Kylo Ginsberg

Nicholas Nethercote

orbea

Richard Janis Goldschmidt

Ulrich Weigand

Approved RFCs

Changes to Rust follow the Rust RFC (request for comments) process. These are the RFCs that were approved for implementation this week:

Every week the team announces the 'final comment period' for RFCs and key PRs which are reaching a decision. Express your opinions now. This week's FCPs are:

mem::discriminant() . Add a function that extracts the discriminant from an enum variant as a comparable, hashable, printable, but (for now) opaque and unorderable type.

. Add a function that extracts the discriminant from an enum variant as a comparable, hashable, printable, but (for now) opaque and unorderable type. Add a compiler flag that emits crate dependencies on a best-effort basis.

New RFCs

Upcoming Events

If you are running a Rust event please add it to the calendar to get it mentioned here. Email Erick Tryzelaar or Brian Anderson for access.

fn work(on: RustProject) -> Money

Tweet us at @ThisWeekInRust to get your job offers listed here!

Quote of the Week

No quote was selected for QotW.

Submit your quotes for next week!

This Week in Rust is edited by: nasa42, llogiq, and brson.