| //@ run-pass | |
| fn pairs<F>(mut it: F) where F: FnMut((isize, isize)) { | |
| let mut i: isize = 0; | |
| let mut j: isize = 0; | |
| while i < 10 { it((i, j)); i += 1; j += i; } | |
| } | |
| pub fn main() { | |
| let mut i: isize = 10; | |
| let mut j: isize = 0; | |
| pairs(|p| { | |
| let (_0, _1) = p; | |
| println!("{}", _0); | |
| println!("{}", _1); | |
| assert_eq!(_0 + 10, i); | |
| i += 1; | |
| j = _1; | |
| }); | |
| assert_eq!(j, 45); | |
| } |