How to Use std

Use the std::fs module to read, write, and manage files by calling its functions with a file path and handling the resulting Result.

use std::fs;

fn main() {
    let contents = fs::read_to_string("hello.txt")
        .expect("Failed to read file");
    println!("{contents}");

    fs::write("hello.txt", "Hello, world!")
        .expect("Failed to write file");

    fs::remove_file("hello.txt")
        .expect("Failed to remove file");
}

The std::fs module is Rust's built-in toolkit for interacting with your computer's file system. It lets your program read data from files, save new data, and delete files just like you would in a file explorer. Think of it as the bridge between your code and the documents stored on your hard drive.