Variables

๋Ÿฌ์ŠคํŠธ๋Š” ์ •์  ํƒ€์ดํ•‘์„ ํ†ตํ•ด ํƒ€์ž… ์„ธ์ดํ”„ํ‹ฐ(ํƒ€์ž… ์•ˆ์ „)์„ ์ œ๊ณตํ•ฉ๋‹ˆ๋‹ค. ๋ณ€์ˆ˜ ๋ฐ”์ธ๋”ฉ์€ ๊ธฐ๋ณธ์ ์œผ๋กœ ๋ถˆ๋ณ€(immutable)ํ•ฉ๋‹ˆ๋‹ค.

Rust provides type safety via static typing. Variable bindings are immutable by default:

fn main() {
    let x: i32 = 10;
    println!("x: {x}");
    // x = 20;
    // println!("x: {x}");
}