more vec

vec.rs

// this for arrays
fn chaos () -> [i32; 5]  {
    let mut chaos = [3, 5 ,4, 1, 2]; 
    
    chaos.sort();
    
    chaos
}

// this is for vectors 
fn primes() -> i32 {
    let mut primes = vec![2, 3, 5, 7 ] ; 
    primes.push(11)  ;
    primes.push(13) ; 
    primes.iter().product::<i32>()
    
}

fn new_px_buffer(rows : usize, cols: usize ) -> Vec<u8> {
        vec![0; rows * cols] 
}
fn main() {
    println!("Hello, world!");
    println!("{:?}", chaos()); 
    println!("{:?}", primes());
    println!("{:?}", new_px_buffer(10 , 10 ))
}