std::tuple_element<std::pair>

 

C++

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Regular expressions library (C++11)

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Utilities library

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initializer_list (C++11)

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Relational operators

rel_ops::operator!= rel_ops::operator> rel_ops::operator<= rel_ops::operator>=

Pairs and tuples

pair

tuple (C++11)

piecewise_construct_t (C++11)

piecewise_construct (C++11)

Swap, forward and move

swap

forward (C++11)

move (C++11)

move_if_noexcept (C++11)

declval (C++11)

 

std::pair

Member functions

pair::pair

pair::operator=

pair::swap

Non-member functions

make_pair

operator= operator!= operator< operator<= operator> operator>=

std::swap

get (C++11)

Helper classes

tuple_size (C++11)

tuple_element (C++11)

 

Defined in header <utility>
template< class T1, class T2 > struct tuple_element<0, std::pair<T1,T2> >;	(1)	(since C++11)
template< class T1, class T2 > struct tuple_element<1, std::pair<T1,T2> >;	(2)	(since C++11)

The partial specializations of std::tuple_element for pairs provide a compile-time way to obtain the types of the pair's elements, using tuple-like syntax.

Member types

First version
Member type	Definition
type	T1
Second version
Member type	Definition
type	T2

See also

tuple_element	obtains the type of the specified element (class template specialization)
std::tuple_element<std::array>	obtains the type of the elements of array (class template specialization)
std::tuple_size<std::pair> (C++11)	obtains the size of a pair (class template specialization)