area-calculator.rs

pub mod area_calculator {
    #[test]
    fn it_works() {
        let s = Rectangle{width: 10u32, height: 20u32};
        assert!(s.area() == 200u32);
        let t = Square{ side: 20u32 };
        assert!(t.area() == 400u32);
    }

    pub struct Rectangle {
        width: u32,
        height: u32,
    }

    pub struct Square {
        side: u32
    }

    struct Triangle {
        height: u32,
        base: u32
    }

    trait Area {
        fn area(&self) -> u32;
    }

    impl Square {
        fn side(&self) -> u32 {
            self.side
        }
    }
    impl Area for Square {
        fn area(&self) -> u32 {
            self.side * self.side
        }
    }

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