1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53
|
//@ run-pass
//@ needs-threads
use std::sync::mpsc::{channel, Receiver};
use std::thread;
fn periodical(n: isize) -> Receiver<bool> {
let (chan, port) = channel();
thread::spawn(move || {
loop {
for _ in 1..n {
match chan.send(false) {
Ok(()) => {}
Err(..) => break,
}
}
match chan.send(true) {
Ok(()) => {}
Err(..) => break,
}
}
});
return port;
}
fn integers() -> Receiver<isize> {
let (chan, port) = channel();
thread::spawn(move || {
let mut i = 1;
loop {
match chan.send(i) {
Ok(()) => {}
Err(..) => break,
}
i = i + 1;
}
});
return port;
}
fn main() {
let ints = integers();
let threes = periodical(3);
let fives = periodical(5);
for _ in 1..100 {
match (ints.recv().unwrap(), threes.recv().unwrap(), fives.recv().unwrap()) {
(_, true, true) => println!("FizzBuzz"),
(_, true, false) => println!("Fizz"),
(_, false, true) => println!("Buzz"),
(i, false, false) => println!("{}", i),
}
}
}
|