特征约束 #

fn largest<T: PartialOrd + Clone>(list: &[T]) -> T {
    let mut largest = list[0].clone();
    for item in list {
        if item > &largest {
            largest = item.clone();
        }
    }
    largest
}

fn some_function<T, U>(t: &T, u: &U) -> i32
where
    T: Display + Clone,
    U: Clone + Debug,
{
    // 函数体
    0
}

struct Pair<T> {
    x: T,
    y: T,
}

impl<T> Pair<T> {
    fn new(x: T, y: T) -> Self {
        Self { x, y }
    }
}

impl<T: Display + PartialOrd> Pair<T> {
    fn cmp_display(&self) {
        if self.x >= self.y {
            println!("x >= y");
        } else {
            println!("x < y");
        }
    }
}