huonw

fn main() {
    let args = os::args();
    match args.tail() {
        [~"-n",..strs] => print(str::connect(strs, " ")),
        strs => println(str::connect(strs, " ")),
    }
}

huonw

// ...

pub trait VecUtil<Elem> {
        pub fn grouped<'r>(&'r self, n: uint) -> ~[&'r [Elem]];
}

impl<'self, Elem> VecUtil<Elem> for &'self [Elem] {
	fn grouped<'r>(&'r self, n: uint) -> ~[&'r [Elem]] {
		if self.is_empty() { return ~[]; }
		let mut res = vec::with_capacity((self.len()-1) / n + 1);