ArraySetCell

A fixed-capacity, vector-like array with interior mutability and no ordering guarantees.

use std::cell::Cell;
use arraysetcell::ArraySetCell;

fn it_works() {
    let mut array = ArraySetCell::<u32, 3>::from([Some(1), None, Some(3)]);
    assert_eq!(array.capacity(), 3);
    assert_eq!(array.len(), 2);

    array.push(10);
    assert_eq!(array.len(), 3);

    array.retain(|x| *x < 10);
    assert_eq!(array.len(), 2);

    let result = array.filter_mut(|x| if *x > 2 { Some(*x) } else { None });
    assert_eq!(result, Some(3));

    let mut iter = array.into_iter();
    assert_eq!(iter.size_hint(), (2, Some(2)));
    assert_eq!(iter.next(), Some(1));
    assert_eq!(iter.next(), Some(3));
    assert_eq!(iter.next(), None);
}