doc.rust-lang.org/std/sync/mpsc/fn.channel.html

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  channel in std::sync::mpsc - Rust
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  Creates a new asynchronous channel, returning the sender/receiver halves.
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https://play.rust-lang.org/?code=%23!%5Ballow(unused)%5D%0Afn+main()+%7B%0A++++use+std::sync::mpsc::channel;%0A++++use+std::thread;%0A++++%0A++++let+(sender,+receiver)+=+channel();%0A++++%0A++++//+Spawn+off+an+expensive+computation%0A++++thread::spawn(move+%7C%7C+%7B%0A++++++fn+expensive_computation()+%7B%7D%0A++++++++sender.send(expensive_computation()).unwrap();%0A++++%7D);%0A++++%0A++++//+Do+some+useful+work+for+awhile%0A++++%0A++++//+Let's+see+what+that+answer+was%0A++++println!(%22%7B:?%7D%22,+receiver.recv().unwrap());%0A%7D&edition=2024