Ultimate Rust - Crash Course 2021

Example: reading a file

cargo new hello_rust cd hello_rust cargo run Inside src/main.rs :

pub trait Summary fn summarize(&self) -> String; ultimate rust crash course

fn main() println!("Hello, Rust!");

fn main() let x = 5; // immutable // x = 6; // ERROR: cannot assign twice to immutable variable let mut y = 10; // mutable y = 11; // OK Example: reading a file cargo new hello_rust cd

Congratulations. You now speak enough Rust to be dangerous. Go write some safe, fast code. 🦀

let mut s = String::from("hello"); change(&mut s); fn main() println!("Hello

let x = 5; let y = x; // copy, both valid let s1 = String::from("hello"); let s2 = s1.clone(); // expensive, explicit 9. Borrowing & References (Without Taking Ownership) Instead of moving, you can borrow a reference.