59             >::type strategy_type;  in operator ()()  typedef
61         return strategy_type::apply(left, right);  in operator ()()
79             >::type strategy_type;  in operator ()()  typedef
81         return strategy_type::apply(left, right);  in operator ()()
99             >::type strategy_type;  in operator ()()  typedef
101         return strategy_type::apply(left, right);  in operator ()()
118             >::type strategy_type;  in operator ()()  typedef
120         return strategy_type::apply(left, right);  in operator ()()
151             >::type strategy_type;  in operator ()()  typedef
153         return strategy_type::apply(left, right);  in operator ()()
171             >::type strategy_type;  in operator ()()  typedef
173         return strategy_type::apply(left, right);  in operator ()()
191             >::type strategy_type;  in operator ()()  typedef
193         return strategy_type::apply(left, right);  in operator ()()
210             >::type strategy_type;  in operator ()()  typedef
212         return strategy_type::apply(left, right);  in operator ()()
245             >::type strategy_type;  in operator ()()  typedef
247         return strategy_type::apply(left, right);  in operator ()()
265             >::type strategy_type;  in operator ()()  typedef
267         return strategy_type::apply(left, right);  in operator ()()
285             >::type strategy_type;  in operator ()()  typedef
287         return strategy_type::apply(left, right);  in operator ()()
304             >::type strategy_type;  in operator ()()  typedef
306         return strategy_type::apply(left, right);  in operator ()()