use in_out::Input;

// Some data source... Could be a vec, array, etc
let data = vec![0xDE, 0xAD, 0xBE, 0xEF, 2, 0b0000_0001];

let mut input = Input::new(&data);

let magic = input.try_read_u32_be()
    .expect("Unable to read Magic Number...");
let version = input.read_u8();
let flags = input.read_u8();

// Prints "0xDEADBEEF v2 flags:00000001"
println!("0x{:X} v{} flags:{:08b}", magic, version, flags);