pub trait BetterThanOperator<T> {
    fn better_than(self: &Self, a: &T, b: &T) -> bool;
}

pub struct MinimizingOperator;
impl MinimizingOperator {
    pub fn new() -> Self {
        Self
    }
}

impl<T> BetterThanOperator<T> for MinimizingOperator
    where T: PartialOrd
{
    fn better_than(self: &Self, a: &T, b: &T) -> bool {
        a < b
    }
}

pub struct MaximizingOperator;
impl MaximizingOperator {
    pub fn new() -> Self {
        Self
    }
}

impl<T> BetterThanOperator<T> for MaximizingOperator
    where T: PartialOrd
{
    fn better_than(self: &Self, a: &T, b: &T) -> bool {
        a > b
    }
}