struct Array {
    inner: [bool; 10000]
}
impl Array {
    fn zero() -> Self {
        Array {
            inner: [false; 10000]
        }
    }
    fn true_iter<'a>(&'a self) -> impl 'a + Iterator<Item = usize> {
        (0..1000).filter(|&i| self.inner[i])
    }
}


fn main() {
    let mut a = Array::zero();
    for i in 0..10000 {
        if i % 1378 == 0 {
            a.inner[i] = true;
        }
    }
    for i in a.true_iter() {
        println!("{}", i)
    }
}