std::pair< _T1, _T2 >(3)

NAME
std::pair< _T1, _T2 > -

SYNOPSIS

  Public Types
typedef _T1 first_type
typedef _T2 second_type

  Public Member Functions
constexpr pair ()
constexpr pair (const _T1 &__a, const _T2 &__b)
template<class _U1 , class _U2 , class = typename enable_if<__and_<is_convertible<const _U1&, _T1>, is_convertible<const _U2&, _T2>>::value>::type> constexpr pair (const pair< _U1, _U2 > &__p)
constexpr pair (const pair &)=default
constexpr pair (pair &&)=default
template<class _U1 , class = typename enable_if<is_convertible<_U1, _T1>::value>::type> constexpr pair (_U1 &&__x, const _T2 &__y)
template<class _U2 , class = typename enable_if<is_convertible<_U2, _T2>::value>::type> constexpr pair (const _T1 &__x, _U2 &&__y)
template<class _U1 , class _U2 , class = typename enable_if<__and_<is_convertible<_U1, _T1>, is_convertible<_U2, _T2>>::value>::type> constexpr pair (_U1 &&__x, _U2 &&__y)
template<class _U1 , class _U2 , class = typename enable_if<__and_<is_convertible<_U1, _T1>, is_convertible<_U2, _T2>>::value>::type> constexpr pair (pair< _U1, _U2 > &&__p)
template<typename... _Args1, typename... _Args2> pair (piecewise_construct_t, tuple< _Args1...>, tuple< _Args2...>)
pair & operator= (const pair &__p)
pair & operator= (pair &&__p) noexcept(__and_< is_nothrow_move_assignable< _T1 >, is_nothrow_move_assignable< _T2 >>::value)
template<class _U1 , class _U2 > pair & operator= (const pair< _U1, _U2 > &__p)
template<class _U1 , class _U2 > pair & operator= (pair< _U1, _U2 > &&__p)
void swap (pair &__p) noexcept(noexcept(swap(first, __p.first))&&noexcept(swap(second, __p.second)))

  Public Attributes
_T1 first
_T2 second

Detailed Description

  template<class _T1, class _T2>struct std::pair< _T1, _T2 >
Struct holding two objects of arbitrary type.

Template Parameters:
    _T1 Type of first object.
    _T2 Type of second object.

Definition at line 96 of file stl_pair.h.

Member Typedef Documentation

  template<class _T1, class _T2> typedef _T2 std::pair< _T1, _T2 >::second_type

first_type is the first bound type

Definition at line 99 of file stl_pair.h.

Constructor & Destructor Documentation

  template<class _T1, class _T2> constexpr std::pair< _T1, _T2 >::pair () [inline]

second is a copy of the second object The default constructor creates first and second using their respective default constructors.

Definition at line 108 of file stl_pair.h.

  template<class _T1, class _T2> constexpr std::pair< _T1, _T2 >::pair (const _T1 &__a, const _T2 &__b) [inline]
Two objects may be passed to a pair constructor to be copied.

Definition at line 112 of file stl_pair.h.

  template<class _T1, class _T2> template<class _U1 , class _U2 , class = typename enable_if<__and_<is_convertible<const _U1&, _T1>, is_convertible<const _U2&, _T2>>::value>::type> constexpr std::pair< _T1, _T2 >::pair (const pair< _U1, _U2 > &__p) [inline]
There is also a templated copy ctor for the pair class itself.

Definition at line 124 of file stl_pair.h.

Member Data Documentation

  template<class _T1, class _T2> _T1 std::pair< _T1, _T2 >::first

second_type is the second bound type

Definition at line 101 of file stl_pair.h.

Referenced by std::_Temporary_buffer< _ForwardIterator, _Tp >::_Temporary_buffer(), std::set< _Key, _Compare, _Alloc >::insert(), std::operator<(), std::operator==(), and std::regex_replace().

  template<class _T1, class _T2> _T2 std::pair< _T1, _T2 >::second

first is a copy of the first object

Definition at line 102 of file stl_pair.h.

Referenced by std::_Temporary_buffer< _ForwardIterator, _Tp >::_Temporary_buffer(), std::set< _Key, _Compare, _Alloc >::insert(), std::operator==(), and std::regex_replace().

Author

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