rust/tests/ui/borrowck/borrowck-rvalues-mutable.rs
2024-02-16 20:02:50 +00:00

35 lines
554 B
Rust

//@ run-pass
struct Counter {
value: usize
}
impl Counter {
fn new(v: usize) -> Counter {
Counter {value: v}
}
fn inc<'a>(&'a mut self) -> &'a mut Counter {
self.value += 1;
self
}
fn get(&self) -> usize {
self.value
}
fn get_and_inc(&mut self) -> usize {
let v = self.value;
self.value += 1;
v
}
}
pub fn main() {
let v = Counter::new(22).get_and_inc();
assert_eq!(v, 22);
let v = Counter::new(22).inc().inc().get();
assert_eq!(v, 24);
}