gistfile1.rs

extern mod extra;

use extra::arc::Arc;
use std::rand;
use std::vec;

fn pnorm(nums: &~[float], p: uint) -> float {
    nums.iter().fold(0.0, |a,b| a+(*b).pow(&(p as float)) ).pow(&(1f / (p as float)))
}

fn main() {
    let numbers = vec::from_fn(1000000, |_| rand::random::<float>());
    println(fmt!("Inf-norm = %?",  *numbers.iter().max().unwrap()));

    let numbers_arc = Arc::new(numbers);

    for num in range(1u, 20) {
        let (port, chan)  = stream();
        chan.send(numbers_arc.clone());

        do spawn {
            let local_arc : Arc<~[float]> = port.recv();
            let task_numbers = local_arc.get();
            println(fmt!("%u-norm = %?", num, pnorm(task_numbers, num)));
        }
    }
}