Rust study : literals

literals.rs

/*
The rust by example ko https://hanbum.gitbooks.io/rustbyexample/content/cast/literals.html
compiled on https://play.rust-lang.org/
result :
size of x in bytes: 1
size of x in bytes: 4
size of x in bytes: 4
size of x in bytes: 4
size of x in bytes: 8
*/

use std::mem;

fn main()
{
    let x = 1u8;
    let y = 2u32;
    let z = 3f32;
    
    let i = 1;
    let f = 1.0;
    
    println!("size of x in bytes: {}", mem::size_of_val(&x));
    println!("size of x in bytes: {}", mem::size_of_val(&y));
    println!("size of x in bytes: {}", mem::size_of_val(&z));
    println!("size of x in bytes: {}", mem::size_of_val(&i));
    println!("size of x in bytes: {}", mem::size_of_val(&f));
}