Rust--模块

Rust中要实现多个文件来编译程序。需要学习以下内容来实现：

Rust中的组织单位是模块，就像CSharp语言中的组织单位是类

pub mod school{
    pub mod teacher{
       pub fn teach(){
            println!("Teacher's work is teaching student");
        }
    }

    pub mod student{
     pub   fn study(){
            println!("Student's work is studying");
        }
    }
}

use school::teacher;
fn main(){
    
    school::student::study();
    

    teacher::teach();
    
}

 输出结果：

 

 

 标准库文件调用：

pub mod school{
    pub mod teacher{
       pub fn teach(){
            println!("Teacher's work is teaching student");
        }
    }

    pub mod student{
     pub   fn study(){
            println!("Student's work is studying");
        }
    }
}

use school::teacher;
use std::f64::consts::PI as pi;  //调用标准库文件
fn main(){    
    school::student::study(); 
    teacher::teach();
    println!("pi number is {}",pi);    
}

 输出结果：

 

Rust标准库：https://doc.rust-lang.org/stable/std/all.html