This header is part of the general utility library.
Classes | |
(C++11) | implements fixed size container, which holds elements of possibly different types (class template) |
obtains the size of tuple at compile time (class template specialization) | |
obtains the type of the specified element (class template specialization) | |
(C++11) | specializes the std::uses_allocator type trait (class template specialization) |
Constants | |
placeholder to skip an element when unpacking a tuple using tie (constant) | |
Functions | |
creates a tuple object of the type defined by the argument types (function template) | |
creates a tuple of lvalue references or unpacks a tuple into individual objects (function template) | |
creates a tuple of rvalue references (function template) | |
creates a tuple by concatenating any number of tuples (function template) | |
tuple accesses specified element (function template) | |
lexicographically compares the values in the tuple (function template) | |
(C++11) | specializes the std::swap algorithm (function template) |
Synopsis
namespace std { // class template tuple: template <class... Types> class tuple; // tuple creation functions: const /*unspecified*/ ignore; template <class... Types> tuple<VTypes...> make_tuple(Types&&...); template <class... Types> tuple<Types...> forward_as_tuple(Types&&...) noexcept; template<class... Types> tuple<Types&...> tie(Types&...) noexcept; template <class... Tuples> tuple<Ctypes...> tuple_cat(Tuples&&...); // tuple helper classes: template <class T> class tuple_size; // undefined template <class T> class tuple_size<const T>; template <class T> class tuple_size<volatile T>; template <class T> class tuple_size<const volatile T>; template <class... Types> class tuple_size<tuple<Types...> >; template <size_t I, class T> class tuple_element; // undefined template <size_t I, class T> class tuple_element<I, const T>; template <size_t I, class T> class tuple_element<I, volatile T>; template <size_t I, class T> class tuple_element<I, const volatile T>; template <size_t I, class... Types> class tuple_element<I, tuple<Types...> >; // element access: template <size_t I, class... Types> typename tuple_element<I, tuple<Types...> >::type& get(tuple<Types...>&) noexcept; template <size_t I, class... types> typename tuple_element<I, tuple<Types...> >::type&& get(tuple<Types...>&&) noexcept; template <size_t I, class... types> typename tuple_element<I, tuple<Types...> >::type const& get(const tuple<Types...>&) noexcept; //relational operators: template<class... TTypes, class... UTypes> bool operator==(const tuple<TTypes...>&, const tuple<UTypes...>&); template<class... TTypes, class... UTypes> bool operator<(const tuple<TTypes...>&, const tuple<UTypes...>&); template<class... TTypes, class... UTypes> bool operator!=(const tuple<TTypes...>&, const tuple<UTypes...>&); template<class... TTypes, class... UTypes> bool operator>(const tuple<TTypes...>&, const tuple<UTypes...>&); template<class... TTypes, class... UTypes> bool operator<=(const tuple<TTypes...>&, const tuple<UTypes...>&); template<class... TTypes, class... UTypes> bool operator>=(const tuple<TTypes...>&, const tuple<UTypes...>&); // allocator-related traits template <class... Types, class Alloc> struct uses_allocator<tuple<Types...>, Alloc>; // specialized algorithms: template <class... Types> void swap(tuple<Types...>& x, tuple<Types...>& y) noexcept(x.swap(y)); }
Class std::tuple
template <class... Types> class tuple { public: // tuple construction constexpr tuple(); explicit tuple(const Types&...); template <class... UTypes> explicit tuple(UTypes&&...); tuple(const tuple&) = default; tuple(tuple&&) = default; template <class... UTypes> tuple(const tuple<UTypes...>&); template <class... UTypes> tuple(tuple<UTypes...>&&); template <class U1, class U2> tuple(const pair<U1, U2>&); // iff sizeof...(Types) == 2 template <class U1, class U2> tuple(pair<U1, U2>&&); // iff sizeof...(Types) == 2 // allocator-extended constructors template <class Alloc> tuple(allocator_arg_t, const Alloc& a); template <class Alloc> tuple(allocator_arg_t, const Alloc& a, const Types&...); template <class Alloc, class... UTypes> tuple(allocator_arg_t, const Alloc& a, const UTypes&&...); template <class Alloc> tuple(allocator_arg_t, const Alloc& a, const tuple&); template <class Alloc> tuple(allocator_arg_t, const Alloc& a, tuple&&); template <class Alloc, class... UTypes> tuple(allocator_arg_t, const Alloc& a, const tuple<UTypes...>&); template <class Alloc, class... UTypes> tuple(allocator_arg_t, const Alloc& a, tuple<UTypes...>&&); template <class Alloc, class U1, class U2> tuple(allocator_arg_t, const Alloc& a, const pair<U1, U2>&); template <class Alloc, class U1, class U2> tuple(allocator_arg_t, const Alloc& a, pair<U1, U2>&&); // tuple assignment tuple& operator=(const tuple&); tuple& operator=(tuple&&) noexcept(see below); template <class... UTypes> tuple& operator=(const tuple<UTypes...>&); template <class... UTypes> tuple& operator=(tuple<UTypes...>&&); template <class U1, class U2> tuple& operator=(const pair<U1, U2>&); // iff sizeof...(Types) == 2 template <class U1, class U2> tuple& operator=(pair<U1, U2>&&) noexcept; // iff sizeof...(Types) == 2 // tuple swap void swap(tuple&) noexcept(see below); };
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