use std::fs::File;
use std::io::Read;

pub fn read_file(filename: &str) -> String{
    let mut file = match File::open(filename) {
        Ok(file) => file,
        Err(err) => {
            panic!(format!("Can't find {}: {}", filename, err));
        }
    };
    let mut content = String::new();
    file.read_to_string(&mut content).unwrap();
    content
}