Shared via Rust Playground

playground.rs

use std::io::prelude::*;
use std::fs::File;
use std::io::{ Error, ErrorKind };

fn open_file(path: &str) -> Vec<u8> {
    let mut f = match File::open( path ) {
        Ok(x) => x,
        Err(e) => match e.kind() {
            ErrorKind::NotFound => /*idk what you want to do*/,
            ErrorKind::PermissionDenied => /*but I think you get the idea*/,
            ErrorKind::ConnectionRefused => /*at least I hope*/,
            ErrorKind::ConnectionReset => /*because I'm not doing all*/,
            ....
        }
    }
}