daoxid

    items = items.filter(i => i !== item);

    $$invalidate('items', items = items.filter(i => i !== item));

    std::unique_ptr<int> get_int() {
        auto p = std::make_unique<int>(1);

        // `p` is an lvalue but treated as an rvalue in the return statement.
        // (This would not compile otherwise because `p` is not copyable.)
        return p;
    }