rust/tests/ui/self/explicit-self-generic.rs
2024-02-16 20:02:50 +00:00

29 lines
532 B
Rust

//@ run-pass
#![allow(dead_code)]
#[derive(Copy, Clone)]
struct LM { resize_at: usize, size: usize }
enum HashMap<K,V> {
HashMap_(LM, Vec<(K,V)>)
}
fn linear_map<K,V>() -> HashMap<K,V> {
HashMap::HashMap_(LM{
resize_at: 32,
size: 0}, Vec::new())
}
impl<K,V> HashMap<K,V> {
pub fn len(&mut self) -> usize {
match *self {
HashMap::HashMap_(ref l, _) => l.size
}
}
}
pub fn main() {
let mut m: Box<_> = Box::new(linear_map::<(),()>());
assert_eq!(m.len(), 0);
}