#[derive(Debug)]
pub struct Counter<'a> {
    pub name: &'a str,
    pub tally: u64,
}

impl<'a> Counter<'a> {
    pub fn new(name: &str) -> Counter {
        Counter {
            name,
            tally: 0,
        }
    }
    pub fn max(x: Counter<'a>, y: Counter<'a>) -> Counter<'a> {
        if x.tally > y.tally {
            x
        } else {
            y
        }
    }

    pub fn increase(&mut self) {
        self.tally += 1;
    }
}