#![allow(dead_code, deprecated, unused_variables, unused_mut)]
use std::any::{Any, TypeId};
fn main() {
    let boxed: Box<dyn Any> = Box::new(3_i32);
    let actual_id = (&*boxed).type_id();
    let boxed_id = boxed.type_id();
    assert_eq!(actual_id, TypeId::of::< i32 > ());
    assert_eq!(boxed_id, TypeId::of::< Box < dyn Any >> ());
}