| use std::mem::{size_of, size_of_val}; | |
| fn main() { | |
| assert_eq!(size_of::<Option<i32>>(), 8); | |
| assert_eq!(size_of_val(&()), 0); | |
| assert_eq!(size_of_val(&42), 4); | |
| assert_eq!(size_of_val(&[] as &[i32]), 0); | |
| assert_eq!(size_of_val(&[1, 2, 3] as &[i32]), 12); | |
| assert_eq!(size_of_val("foobar"), 6); | |
| } |