- use std::fmt;
- #[derive(Debug)]
- struct Rectangle {
- width: u32,
- height: u32,
- }
- impl std::fmt::Display for Rectangle {
- fn fmt(&self, f: &mut fmt::Formatter) -> fmt::Result {
- write!(f, "Rectangle width: {} height: {}", self.width, self.height)
- }
- }
- impl Rectangle {
- fn area(&self) -> u32 {
- self.width * self.width
- }
- fn can_hold(&self, other: &Rectangle) -> bool {
- self.width > other.width && self.height > other.height
- }
- fn square(size: u32) -> Rectangle {
- Rectangle {
- width: size,
- height: size,
- }
- }
- }
- fn main() {
- let rect1 = Rectangle { width: 30, height: 50 };
- let rect2 = Rectangle { width: 10, height: 40 };
- let rect3 = Rectangle { width: 60, height: 45 };
- let rect4 = Rectangle::square(40);
- println!("Can rect1 hold rect2? {}", rect1.can_hold(&rect2));
- println!("Can rect1 hold rect3? {}", rect1.can_hold(&rect3));
- println!("rect4 is {}", rect4);
- println!("rect4 is {:#?}", rect4);
- println!(
- "The area of the rectangle is {} square pixels.",
- rect4.area()
- );
- }
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