如何将二进制数写入文件并在rust中检索

use std::fs::File;
use std::io::{Read, Write};

fn write_binary_to_file() -> std::io::Result<()> {
    let binary_data: [u8; 4] = [0b0000_0001, 0b0000_0010, 0b0000_0011, 0b0000_0100];
    let mut file = File::create("binary_data.bin")?;
    file.write_all(&binary_data)?;
    Ok(())
}

fn retrieve_binary_from_file() -> std::io::Result<Vec<u8>> {
    let mut file = File::open("binary_data.bin")?;
    let mut binary_data = Vec::new();
    file.read_to_end(&mut binary_data)?;
    Ok(binary_data)
}

use std::fs::File;
use std::io::{Read, Write};

fn write_binary_to_file() -> std::io::Result<()> {
    let binary_data: [u8; 4] = [0b0000_0001, 0b0000_0010, 0b0000_0011, 0b0000_0100];
    let mut file = File::create("binary_data.bin")?;
    file.write_all(&binary_data)?;
    Ok(())
}

fn retrieve_binary_from_file() -> std::io::Result<Vec<u8>> {
    let mut file = File::open("binary_data.bin")?;
    let mut binary_data = Vec::new();
    file.read_to_end(&mut binary_data)?;
    Ok(binary_data)
}

fn main() {
    write_binary_to_file().expect("Failed to write binary data to file");
    let binary_data = retrieve_binary_from_file().expect("Failed to retrieve binary data from file");
    println!("Retrieved binary data: {:?}", binary_data);
}