38 struct Replace {  struct
44 struct Replace<_1, Arg1, Arg2> {  argument
49 struct Replace<_2, Arg1, Arg2> {  struct
55 struct Replace<const T, Arg1, Arg2> {  struct
56   typedef typename Replace<T, Arg1, Arg2>::type const type;  argument
61 struct Replace<TT<T1>, Arg1, Arg2> {  struct
62   typedef TT<typename Replace<T1, Arg1, Arg2>::type> type;  argument
67 struct Replace<TT<T1, T2>, Arg1, Arg2> {  struct
69              typename Replace<T2, Arg1, Arg2>::type> type;  argument
75 struct Replace<TT<T1, _2>, Arg1, Arg2> {  struct
76   typedef TT<typename Replace<T1, Arg1, Arg2>::type, Arg2> type;  argument