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// Copyright 2014 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
#![feature(std_misc)]
use std::thread;
use std::sync::mpsc::{channel, Receiver};
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)
}
}
}
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