65 lines
1.1 KiB
Rust
65 lines
1.1 KiB
Rust
// run-pass
|
|
#![allow(non_camel_case_types)]
|
|
#![allow(dead_code)]
|
|
|
|
trait noisy {
|
|
fn speak(&mut self);
|
|
}
|
|
|
|
#[derive(Clone)]
|
|
struct cat {
|
|
meows : usize,
|
|
|
|
how_hungry : isize,
|
|
name : String,
|
|
}
|
|
|
|
impl cat {
|
|
fn meow(&mut self) {
|
|
println!("Meow");
|
|
self.meows += 1_usize;
|
|
if self.meows % 5_usize == 0_usize {
|
|
self.how_hungry += 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
impl cat {
|
|
pub fn eat(&mut self) -> bool {
|
|
if self.how_hungry > 0 {
|
|
println!("OM NOM NOM");
|
|
self.how_hungry -= 2;
|
|
return true;
|
|
} else {
|
|
println!("Not hungry!");
|
|
return false;
|
|
}
|
|
}
|
|
}
|
|
|
|
impl noisy for cat {
|
|
fn speak(&mut self) { self.meow(); }
|
|
}
|
|
|
|
fn cat(in_x : usize, in_y : isize, in_name: String) -> cat {
|
|
cat {
|
|
meows: in_x,
|
|
how_hungry: in_y,
|
|
name: in_name.clone()
|
|
}
|
|
}
|
|
|
|
|
|
fn make_speak<C:noisy>(mut c: C) {
|
|
c.speak();
|
|
}
|
|
|
|
pub fn main() {
|
|
let mut nyan = cat(0_usize, 2, "nyan".to_string());
|
|
nyan.eat();
|
|
assert!((!nyan.eat()));
|
|
for _ in 1_usize..10_usize {
|
|
make_speak(nyan.clone());
|
|
}
|
|
}
|