Post: Joining threads immediately as they finish in Rust

[jpmelos]

This is a post about joining multiple threads in Rust in a way that they can be joined immediately as they finish.

[mariannegoldin]

Thank you! Approved with a syntax correction.

[ericseppanen]

Thanks for the submission!

I was reviewing this post with one of the rust standard library authors, and we both felt that this article could use some improvement, so that it doesn't cause confusion among readers new to Rust. Specifically, it should mention the fact that thread::spawn can be used in "detached" mode (by just dropping the JoinHandle), where the caller does not need to call join() at all.

If we've misunderstood, feel free to continue the conversation. I'm going to revert the PR in this week's issue because we're already late and need to get it published soon, but feel free to resubmit again next week! Apologies for the mixed messages; it was a miscommunication on our end.

If a timely result is needed from the spawned thread, it's fairly common to pass a Sender to into the spawned function and have it transmit information that way, instead of using the return value and doing more work to loop over the JoinHandles repeatedly. It might also help to mention this approach.

[jpmelos]

Thanks, I'll edit the post and try again.