youjo.rs

trait Behaviour {
  fn run(&self);
}
struct YoujoBehaviour{}
impl Behaviour for YoujoBehaviour{
  fn run(&self){println!("はわわ");}
}

struct Caller<'a> {
  behaviour: Box<Behaviour+'a>,
}
impl<'a> Caller<'a> {
  fn run(&self) {
    self.behaviour.run();
  }
}

fn main(){
  let c = Caller{behaviour: Box::new(YoujoBehaviour{})};
  c.run()
}