2 #![feature(box_syntax)]
7 struct Ints {sum: Box<isize>, values: Vec<isize> }
9 fn add_int(x: &mut Ints, v: isize) {
11 let mut values = Vec::new();
12 swap(&mut values, &mut x.values);
14 swap(&mut values, &mut x.values);
17 fn iter_ints<F>(x: &Ints, mut f: F) -> bool where F: FnMut(&isize) -> bool {
18 let l = x.values.len();
19 (0..l).all(|i| f(&x.values[i]))
23 let mut ints: Box<_> = box Ints {sum: box 0, values: Vec::new()};
24 add_int(&mut *ints, 22);
25 add_int(&mut *ints, 44);
27 iter_ints(&*ints, |i| {
28 println!("isize = {:?}", *i);
32 println!("ints={:?}", ints);