#![feature(box_syntax)]
#![feature(scoped)]
use std::thread;

use std::sync::Arc;
use std::sync::RwLock;

struct MyCell{
a:f64,
t:f64,
}
impl MyCell{
fn new()->MyCell{
        return MyCell{a:0.0,t:0.0};
}

}

impl Copy for MyCell{}
impl Clone for MyCell{
fn clone(&self) -> MyCell{
        return MyCell{a:self.a,t:self.t};
}
}

fn main() {
        let lock1 = Arc::new(box [RwLock::new(box MyCell::new()),RwLock::new(box MyCell::new())]);

        let mut guards=Vec::with_capacity(10);
        for _ in 0..10{
        let g=thread::scoped(||{
        let lock2 = lock1.clone();
        let mut count=lock2[0].write().unwrap();
        count.a+=1.0;} );
        guards.push(g);
}
        for g in guards {
        g.join();
}
    println!("Hello, world! {}",lock1[0].read().unwrap().a);
}