[boost] Is type list defined in boost

Hi, I've seen typelist somewhere. I'm wondering if it is defined in boost? Thanks, Peng struct ListEnd_ {}; template< typename THead, typename TTail = ListEnd_ > struct TypeList_ { typedef THead item; typedef TTail next; }; class Rect_; class Square_; class Triangle_; class RightTriangle_; typedef TypeList_< Rect_, TypeList_< Square_, TypeList_< Triangle_, TypeList_< RightTriangle_ > > > > Shapes_;