transmute.rs

transmute.rs

use std::mem;

#[derive(Debug)]
struct Rec {
    x: u32
}

fn main() {
    let array = [8 as u8, 0 as u8, 0 as u8, 0 as u8];
    let rec: Rec;
    unsafe {
        rec = mem::transmute::<[u8; 4], Rec>(array);
    }

    let mut array_out = [1 as u8, 2 as u8, 4 as u8, 7 as u8];

    let rec_out = Rec{ x: 8 };

    unsafe {
        array_out = mem::transmute::<Rec, [u8; 4]>(rec_out);
    }

    println!("{:?}", array_out);
    println!("{:?}", rec);

}