amp; container, index_type from,

            index_type to, Iter first, Iter last

        );



        static void

        delete_item(Container&amp; container, index_type i);



        static void

        delete_slice(Container&amp; container, index_type from, index_type to);



        static size_t

        size(Container&amp; container);



        template &lt;class T&gt;

        static bool

        contains(Container&amp; container, T const&amp; val);



        static index_t