mod front_of_house;

pub fn eat_at_restaurant() {
    // 绝对路径
    crate::front_of_house::hosting::add_to_waitlist();

    // 相对路径
    front_of_house::hosting::add_to_waitlist();
}

// super关键字
fn serve_order() {}

mod back_of_house {
    fn fix_incorrent_order() {
        cook_order();

        super::serve_order();

        // 绝对路径
        crate::serve_order();
    }

    fn cook_order() {}
}

// pub struct
mod back_of_house1 {

    pub struct Breakfast {
        pub toast: String,
        seasonal_fruit: String,
    }

    impl Breakfast {
        pub fn summer(toast: &str) -> Breakfast {
            Breakfast {
                toast: String::from(toast),
                seasonal_fruit: String::from("apples"),
            }
        }
    }
}

pub fn eat_at_restaurant1 () {
    let mut meal = back_of_house1::Breakfast::summer("Rye");
    meal.toast = String::from("Wheat");

    println!("I.d like {} toast please", meal.toast);

    // meal.seasonal_fruit = String::from("blueberries"); // 报错 私有属性不能访问
}

// use关键字
use crate::back_of_house1::Breakfast;
// 相对路径
// use back_of_house1::Breakfast;

pub fn eat_at_restaurant2 () {
    let mut meal = Breakfast::summer("Rye");
    meal.toast = String::from("Wheat");

    println!("I.d like {} toast please", meal.toast);

    // meal.seasonal_fruit = String::from("blueberries"); // 报错 私有属性不能访问
}

use std::fmt::Result;
use std::io::Result as IoResult;