mirror of
https://github.com/rust-lang/rust.git
synced 2024-11-30 10:45:18 +00:00
23 lines
439 B
Rust
23 lines
439 B
Rust
//@ 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);
|
|
}
|