rust/tests/ui/nll/mutating_references.rs
2024-02-16 20:02:50 +00:00

25 lines
477 B
Rust

//@ run-pass
struct List<T> {
value: T,
next: Option<Box<List<T>>>,
}
fn to_refs<T>(mut list: &mut List<T>) -> Vec<&mut T> {
let mut result = vec![];
loop {
result.push(&mut list.value);
if let Some(n) = list.next.as_mut() {
list = n;
} else {
return result;
}
}
}
fn main() {
let mut list = List { value: 1, next: None };
let vec = to_refs(&mut list);
assert_eq!(vec![&mut 1], vec);
}