meap/meap-code/ch1/ch1-animals.rs


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struct Animal {
	age: i32,
}

struct Cat(Animal);
struct Dog(Animal);
struct LoudDog(Animal);

trait Talk {
	fn talk(&self) -> ();
}

impl Talk for Cat {
	fn talk(&self) {
		println!("Meow");
	}
}

impl Talk for Dog {
	fn talk(&self) {
		println!("Woof!");
	}
}

impl Talk for LoudDog {
	fn talk(&self) {
		println!("WOOF!!");
	}
}


fn main() {
	let fluffy = Cat(Animal { age: 4 });
	let max = Dog(Animal { age: 2 });
	let neighbours_dog = LoudDog(Animal { age: 7 });

	fluffy.talk();
	max.talk();
	neighbours_dog.talk();
}