Struct Rectangle

pub struct Rectangle { /* private fields */ }

Implementations

impl Rectangle

pub fn area(&self) -> i32

计算矩形的面积

• 示例如下

    let mut rect = Rectangle {
        width: 12,
        height: 8,
    };
    let area_val = rect.area();

pub fn get_width(self) -> i32

获取矩形的宽 move了所有权，调用之后，后续该实例就没法使用；

• 示例如下

    let mut rect = Rectangle {
        width: 12,
        height: 8,
    };
    let width = rect.get_width();

pub fn modify_width(&mut self, new_width: i32)

更新矩形的宽

• 示例如下

    let mut rect = Rectangle {
        width: 12,
        height: 8,
    };
    rect.modify_width(-32);

pub fn square(size: i32) -> Self

生成正方形

• 示例如下

let square_val = Rectangle::square(10);
println!("square: {:?}", square_val);

Trait Implementations

impl Debug for Rectangle

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.