fn iters() {
    let mut vec=vec![2,34,5];
    for x in &vec {
        println!("deger :{}",*x);
    }
    for x in vec.iter(){
        println!(" iteratif : {}",x);
        // henüz mut değil
    }
    for x in vec.iter().rev(){
        println!("tersten okuma {}",x);
    }
    for x in vec.iter_mut() {
        *x+=4;
    }
    println!("liste halinde {:?}",vec);
    let mut vec2= vec![2,6,3];
    vec2.extend(vec);
    println!("{:?}",vec2);
}
fn main() {
    iters();

}