#![feature(nll)]

fn main() {
    println!("Hello, world!");
    let mut test = String::from("12345");
    let mut obj1 = Object {
         text : test.as_mut_str()
        ,next : None
    };
    for i in 0..5 {
        obj1 = *obj1.split_text(4 - i);
        if let Some(obj) = obj1.next.as_ref() {
            println!("{}", obj.text);
        }
    }
}

struct Object<'a> {
     text :  &'a mut str
    ,next : Option<Box<Object<'a>>>
}

impl <'a> Object<'a> {
    fn split_text(&'a mut self, count:usize) -> &'a mut Self {
        let tmp = &mut self.text;
        let (part1, part2) = tmp.split_at_mut(count);
        self.text = part1;
        let obj2 = Object {
             text : part2
            ,next : None
        };
        self.next = Some(Box::new(obj2));
        self
    }
}