Tour of the Rust Standard Library

The Rust Standard Library provides core types like Vec, String, HashMap, and Result, along with modules for I/O, threading, and collections, all accessible via std:: or prelude. You can explore the full list of available modules and types in the official documentation at https://doc.rust-lang.org/std/.

use std::collections::HashMap;
use std::thread;

fn main() {
    let mut map = HashMap::new();
    map.insert("key", "value");
    thread::spawn(|| println!("Hello from thread!"));
}

The Rust Standard Library is a built-in toolbox of ready-to-use code for common tasks like managing data, handling errors, and running multiple threads. Think of it as a pre-packaged set of tools you get with Rust so you don't have to write everything from scratch. You use it whenever you need to store lists, read files, or run code in parallel without installing extra software.