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| constexpr | _Tuple_impl (const _Head &__head, const _Tail &...__tail) | 
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| template<typename _UHead , typename... _UTail, typename  = typename enable_if<sizeof...(_Tail) == sizeof...(_UTail)>::type> | 
| constexpr | _Tuple_impl (_UHead &&__head, _UTail &&...__tail) | 
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| constexpr | _Tuple_impl (const _Tuple_impl &)=default | 
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| constexpr | _Tuple_impl (_Tuple_impl &&__in) noexcept(__and_< is_nothrow_move_constructible< _Head >,                                               is_nothrow_move_constructible< _Inherited >>::value) | 
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| template<typename... _UElements> | 
| constexpr | _Tuple_impl (const _Tuple_impl< _Idx, _UElements... > &__in) | 
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| template<typename _UHead , typename... _UTails> | 
| constexpr | _Tuple_impl (_Tuple_impl< _Idx, _UHead, _UTails... > &&__in) | 
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| template<typename _Alloc > | 
|  | _Tuple_impl (allocator_arg_t __tag, const _Alloc &__a) | 
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| template<typename _Alloc > | 
|  | _Tuple_impl (allocator_arg_t __tag, const _Alloc &__a, const _Head &__head, const _Tail &...__tail) | 
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| template<typename _Alloc , typename _UHead , typename... _UTail, typename  = typename enable_if<sizeof...(_Tail)					     == sizeof...(_UTail)>::type> | 
|  | _Tuple_impl (allocator_arg_t __tag, const _Alloc &__a, _UHead &&__head, _UTail &&...__tail) | 
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| template<typename _Alloc > | 
|  | _Tuple_impl (allocator_arg_t __tag, const _Alloc &__a, const _Tuple_impl &__in) | 
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| template<typename _Alloc > | 
|  | _Tuple_impl (allocator_arg_t __tag, const _Alloc &__a, _Tuple_impl &&__in) | 
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| template<typename _Alloc , typename... _UElements> | 
|  | _Tuple_impl (allocator_arg_t __tag, const _Alloc &__a, const _Tuple_impl< _Idx, _UElements... > &__in) | 
|  | 
| template<typename _Alloc , typename _UHead , typename... _UTails> | 
|  | _Tuple_impl (allocator_arg_t __tag, const _Alloc &__a, _Tuple_impl< _Idx, _UHead, _UTails... > &&__in) | 
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| _Tuple_impl & | operator= (const _Tuple_impl &__in) | 
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| _Tuple_impl & | operator= (_Tuple_impl &&__in) noexcept(__and_< is_nothrow_move_assignable< _Head >,                                               is_nothrow_move_assignable< _Inherited >>::value) | 
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| template<typename... _UElements> | 
| _Tuple_impl & | operator= (const _Tuple_impl< _Idx, _UElements... > &__in) | 
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| template<typename _UHead , typename... _UTails> | 
| _Tuple_impl & | operator= (_Tuple_impl< _Idx, _UHead, _UTails... > &&__in) | 
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template<std::size_t _Idx, typename _Head, typename... _Tail>
struct std::_Tuple_impl< _Idx, _Head, _Tail... >
Recursive tuple implementation. Here we store the Head element and derive from a Tuple_impl containing the remaining elements (which contains the Tail). 
Definition at line 180 of file tuple.