pub mod net {
    pub struct Client {
        pub id: u32,
    }

    impl Client {
        pub fn connect(id: u32) -> Self {
            Self { id }
        }
    }
}

pub enum Mode {
    Fast,
    Safe,
}

pub fn run(args: &[String]) -> Result<(), String> {
    let mode = if args.is_empty() {
        Mode::Safe
    } else {
        Mode::Fast
    };

    match mode {
        Mode::Fast => println!("fast"),
        Mode::Safe => println!("safe"),
    }

    Ok(())
}

fn helper(value: i32) -> i32 {
    value + 1
}