Rust for JavaScript Developers: First Impressions

As a JavaScript developer, I am used to the garbage collector cleaning up my mess. Rust doesn't let you be messy.

Variables

In JS, const implies the reference can't change, but the object can. In Rust, immutability is the default.

fn main() {
    let x = 5;
    // x = 6; // ❌ This throws an error!
    
    let mut y = 5;
    y = 6; // ✅ This is fine
}