| template<int __i, int ... _Indexes, typename _IdxHolder, typename ... | |
| _Elements> | |
| struct __index_holder_impl<__i, __index_holder<_Indexes ...>, | |
| _IdxHolder, _Elements ...> | |
| { | |
| typedef typename __index_holder_impl<__i + 1, | |
| __index_holder<_Indexes ..., | |
| __i>, | |
| _Elements ...>::type type; | |
| }; |