Function std::mem::size_of_val

pub fn size_of_val<T>(val: &T) -> usize where T: ?Sized

Returns the size of the type that val points to in bytes.

Examples

fn main() { use std::mem; assert_eq!(4, mem::size_of_val(&5i32)); }

use std::mem;

assert_eq!(4, mem::size_of_val(&5i32));