Error Handling

mod foo;

use foo::Bar;
use foo::BarError;

use std::io::{ErrorKind};

fn main() {
    let mut bar = match Bar::read_from_file("./some_file.txt") {
        Ok(bar) => bar,
        Err(err) => {
            match err {
                BarError::Io(err) =>
                    match err.kind() {
                        ErrorKind::NotFound => panic!("File not found!"),
                        _ => panic!("Some error!"),
                    },
            }
        }
    };
}