mirror of https://github.com/rust-lang/rust
54 lines
1.2 KiB
Rust
54 lines
1.2 KiB
Rust
//@ run-pass
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//@ needs-threads
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use std::sync::mpsc::{channel, Receiver};
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use std::thread;
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fn periodical(n: isize) -> Receiver<bool> {
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let (chan, port) = channel();
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thread::spawn(move || {
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loop {
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for _ in 1..n {
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match chan.send(false) {
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Ok(()) => {}
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Err(..) => break,
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}
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}
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match chan.send(true) {
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Ok(()) => {}
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Err(..) => break,
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}
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}
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});
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return port;
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}
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fn integers() -> Receiver<isize> {
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let (chan, port) = channel();
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thread::spawn(move || {
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let mut i = 1;
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loop {
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match chan.send(i) {
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Ok(()) => {}
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Err(..) => break,
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}
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i = i + 1;
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}
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});
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return port;
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}
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fn main() {
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let ints = integers();
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let threes = periodical(3);
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let fives = periodical(5);
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for _ in 1..100 {
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match (ints.recv().unwrap(), threes.recv().unwrap(), fives.recv().unwrap()) {
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(_, true, true) => println!("FizzBuzz"),
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(_, true, false) => println!("Fizz"),
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(_, false, true) => println!("Buzz"),
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(i, false, false) => println!("{}", i),
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}
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}
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}
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