Working with type sequences</> <para> If we were to design a generative container library, our first attempt could be something like this: </> <programlisting> <![CDATA[ namespace ctl { // Container Template Library template< typename T , typename Features > class container { // ... }; } // namespace ctl ]]> </> <para> Here, <literal>container</> template is a single generative interface to all the , and we would like to pass to a possibly numerous features of a container as a single type. </> </section>