Today, I woke up with a thought: learn Rust. I bought a book about 3 months ago and started to read it, browse code on GitHub, etc., but I never wrote any code myself.

After 1 hour (yeah, I suck), I implemented a Fibonacci sequence. I think I used every Rust tip I could remember, but I'm not entirely sure.

This is the bad code I wrote, but I'm very proud of it.

use std::mem;

fn fib(n: &mut i32) -> i32 {
    let mut a = 1;
    let mut b = 1;
    while *n > 1 {
        a += b;
        mem::swap(&mut a, &mut b);
        *n -= 1;
    }

    b
}

This prints the first \(N\) numbers from the Fibonacci sequence.

println!("{}", fib(&mut N));

Maybe one day, I'll look at this code and think: "WTF is that?!".