rust-lang-zh_CN/projects/rectangles/src/main.rs

#[derive(Debug)]
struct Rectangle {
    width: u32,
    height: u32,
}

impl Rectangle {
    fn area(&self) -> u32 {
        self.width * self.height
    }

    fn can_hold(&self, other: &Rectangle) -> bool {
        (self.width > other.width && self.height > other.height)
            || (self.width > other.height && self.height > other.width)
    }

    fn square(size: u32) -> Self {
        Self {
            width: size,
            height: size,
        }
    }
}

fn main() {
    let rect1 = Rectangle {
        width: 30,
        height: 50,
    };

    let rect2 = Rectangle {
        width: 10,
        height: 40,
    };

    let rect3 = Rectangle {
        width: 48,
        height: 28,
    };

    println! ("rect1 可以容纳 rect2 吗？{}", rect1.can_hold(&rect2));
    println! ("rect1 可以容纳 rect3 吗？{}", rect1.can_hold(&rect3));
}