Interface Shape

main.rs:686–692

We can tie struct properties to functions using Traits You can create functions that can be used by any structs that implement the right traits

    // You can create functions that can be used by any structs
    // that implement the right traits
    trait Shape {
        // This is a constructor which returns a Shape
        fn new(length: f32, width: f32) -> Self;

        // An area function that belongs to this trait
        fn area(&self) -> f32;
    }

    // Define rectangle and circle struct
    struct Rectangle {length: f32, width: f32}