use std::env; use std::fs::File; use std::io::Read; pub type Result = std::result::Result>; pub fn read_file() -> Result> { let path = env::args().skip(1).next().unwrap(); let mut file = File::open(path)?; let mut content = String::new(); file.read_to_string(&mut content)?; Ok(content.lines().map(|l| l.parse().unwrap()).collect()) }