Modules and Crates

Overview

Modules and crates in Rust help organize code into reusable and maintainable units.

Topics

• Defining Modules
• Using mod and use
• Crates and the Cargo Package Manager

Examples

Modules

mod math {
    pub fn add(a: i32, b: i32) -> i32 {
        a + b
    }
}

let result = math::add(2, 3);
println!("Result: {}", result);

Crates

# Add dependencies in Cargo.toml
[dependencies]
rand = "0.8"

# Use the crate in your code
use rand::Rng;

let mut rng = rand::thread_rng();
let n: u32 = rng.gen_range(1..101);
println!("Random number: {}", n);

Tags

#rust #modules #crates