在rust中循环整数字节的惯用方法是什么?[副本]

同时 transmute -ING是可能的( see @Tim's answer )最好使用 the byteorder crate 为保证最终结果:

extern crate byteorder;

use byteorder::ByteOrder;

fn main() {
    let message = 0x1234123412341234u64;
    let mut buf = [0; 8];
    byteorder::LittleEndian::write_u64(&mut buf, message);

    for b in &buf {
         // 34, 12, 34, 12, 34, 12, 34, 12, 
         print!("{:X}, ", b);
    }

    println!("");

    byteorder::BigEndian::write_u64(&mut buf, message);

    for b in &buf {
         // 12, 34, 12, 34, 12, 34, 12, 34, 
         print!("{:X}, ", b);
    }
}

( Permalink to the playground )

转化是安全的 u64 [u8; 8] :

let message_arr: [u8; 8] = unsafe { mem::transmute(message) };
for b in &message_arr {
    println!("{}", b)
}

看到这个行动 on the playground .