Print rust struct byte by byte

print-struct-byte-by-byte.rs

unsafe fn any_as_u8_slice<T: Sized>(p: &T) -> &[u8] {
    ::core::slice::from_raw_parts(
        (p as *const T) as *const u8,
        ::core::mem::size_of::<T>(),
    )
}

let bytes: &[u8] = unsafe { any_as_u8_slice(&req) };
for byte in bytes {
    print!("{:02x} ", byte);
}