RustBook_Instances_CN 0.7.2

一个包含了RustBook程序实例的学习项目，a project that contains instances of RustBook with Chinese,for studing.
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//模块可以嵌套，就像hosting和serving模块
//模块内还可以定义一些除方法外的其他东西，比如结构体、枚举、常量等
pub fn add_to_waitlist(){
    println!("add to waitlist!");
}

fn seat_at_table(){
    println!("seat at table!");
}