Rust Programming Tutorials, Guides & Best Practices

#[macro_use] extern crate rocket;

#[get("/")]
fn index() -> &'static str {
    "Hello, Rocket!"
}

#[launch]
fn rocket() -> _ {
    rocket::build().mount("/", routes![index])
}

• Easy to get started with
• Clean and readable code with minimal boilerplate
• Strong type safety

[dependencies]
rand = "0.8.3"

In your code:

A Future in Rust is an abstraction for a value that may not yet be available. Understanding how futures work is crucial to mastering async programming in Rust.

use std::future::Future;

fn my_future() -> impl Future<Output = i32> {
    async {
        // Simulate some asynchronous computation
        42
    }
}

async fn main() {
    let result = my_future().await;
    println!("The answer is {}", result);
}

• Immutable references (&T) allow read-only access.
• Mutable references (&mut T) allow read-write access but are exclusive.
• You cannot have mutable and immutable references to the same data simultaneously.

Lifetimes in Rust prevent dangling references by ensuring that references are always valid. The compiler checks lifetimes to guarantee that no references outlive the data they point to.