tuple-like, pair-like - cppreference.com (original) (raw)

template< class T >concept tuple-like = /* see below */;	(1)	(since C++23) (exposition only*)
(2)	(since C++23) (exposition only*)

_tuple-like_ types implement the tuple protocol, i.e., such types can be used with std::get, std::tuple_element and std::tuple_size.

Elements of _tuple-like_ types can be bound with structured binding.

_tuple-like_ and _pair-like_ are used in the following standard library components:

(constructor)	constructs a new tuple (public member function) [edit]
operator=	assigns the contents of one tuple to another (public member function) [edit]
operator==operator!=operator<operator<=operator>operator>=operator<=>(removed in C++20)(removed in C++20)(removed in C++20)(removed in C++20)(removed in C++20)(C++20)	lexicographically compares the values in the tuple (function template) [edit]
std::basic_common_reference<_tuple-like_>(C++23)	determines the common reference type of a tuple and a tuple-like type (class template specialization) [edit]
std::common_type<_tuple-like_>(C++23)	determines the common type of a tuple and a tuple-like type (class template specialization) [edit]
tuple_cat(C++11)	creates a tuple by concatenating any number of tuples (function template) [edit]
apply(C++17)	calls a function with a tuple of arguments (function template) [edit]
make_from_tuple(C++17)	construct an object with a tuple of arguments (function template) [edit]
(constructor)	constructs new pair (public member function of std::pair<T1,T2>) [edit]
operator=	assigns the contents (public member function of std::pair<T1,T2>) [edit]
operator PairLike	converts the subrange to a *pair-like* type (public member function of std::ranges::subrange<I,S,K>) [edit]
ranges::elements_viewviews::elements(C++20)	takes a view consisting of *tuple-like* values and a number N and produces a view of Nth element of each tuple(class template) (range adaptor object)[edit]