Function destroy

native/watchos/src/scene.rs:186–201

(handle: u32)

}

pub fn destroy(handle: u32) {
    with(|inner| {
        let existed = if let Some(slot) = inner.nodes.get_mut(handle as usize) {
            if slot.is_some() { *slot = None; true } else { false }
        } else { false };
        if existed { inner.destroyed_queue.push(handle); }
        // Any node with this as parent becomes a root — flag PARENT dirty
        // so Swift reparents it.
        for n in inner.nodes.iter_mut().flatten() {
            if n.parent == handle {
                n.parent = 0;
                n.dirty_flags |= DIRTY_PARENT;
            }
        }
    });
}

fn mutate<F: FnOnce(&mut Node)>(handle: u32, f: F) {
    with(|inner| {